My Inquiry
My Account
Texas Instruments ADS7841ES/2K5
- Part No.:
- ADS7841ES/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ADS7841ES/2K5.pdf
- Description:
- IC ADC 12BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,251
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADS7841ES/2K5 from Texas Instruments is a 12-bit, 4-channel SAR analog-to-digital converter with synchronous serial interface, ±1 LSB INL/DNL, 200 kHz max throughput at +5V, and operation over –40°C to +125°C in SSOP-16 package. It supports single-ended or differential inputs, programmable 8-/12-bit resolution, and shutdown mode consuming <15 µW.
For engineers reviewing the ADS7841ES/2K5 datasheet, ADS7841ES/2K5 pinout, ADS7841ES/2K5 application, or ADS7841ES/2K5 equivalent, key selection factors include guaranteed 125°C operation, 4-channel multiplexer integration, 72 dB SINAD at 10 kHz, low-power serial interface timing, and compatibility with 2.7–5 V supplies and external reference scaling from 100 mV to VCC.
Technical Context
The ADS7841ES/2K5 implements a capacitive redistribution SAR architecture with integrated sample-and-hold, requiring no external hold capacitor. Its four-channel analog multiplexer accepts either single-ended inputs referenced to COM or true differential pairs across CH0–CH3, selected via A2–A0 and SGL/DIF bits in the 8-bit control byte.
Digital interface operates synchronously with DCLK, supporting three timing modes: 24-clock (standard), 16-clock (overlapped control), and 15-clock (FPGA/ASIC-optimized) conversions. MODE pin hardwires 12-bit operation for the ADS7841ES grade, eliminating resolution ambiguity during high-reliability operation at extended temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR with no missing codes; enables precise measurement of small signal changes down to 1.22 mV LSB (at VREF = 5 V). |
| Throughput Rate | Up to 200 kHz at +5 V; supports real-time sampling of fast transients in industrial monitoring and battery-powered data loggers. |
| INL / DNL | ±1 LSB max (typical); ensures monotonicity and accurate end-point linearity critical for closed-loop control feedback. |
| SINAD | 72 dB at 10 kHz input; delivers >11.6 ENOB for high-fidelity acquisition in test equipment and sensor interfaces. |
| Supply Range | 2.7 V to 5.25 V; allows direct interfacing with Li-ion batteries (3.0–4.2 V) and 3.3 V/5 V logic without level-shifting. |
| Temp Range | –40°C to +125°C (ES grade only); qualified for under-hood automotive, motor drive, and industrial edge sensing applications. |
| Power (Active) | 2 mW at 200 kHz / +5 V; enables multi-second battery life in portable PDAs and handheld meters with intermittent sampling. |
| Power (Shutdown) | <15 µW; reduces quiescent current by >99% during idle periods, preserving energy in always-on remote sensors. |
Pinout & Package
ADS7841ES/2K5 is housed in a 16-pin SSOP (DBQ) package with 0.65 mm pitch, 5.0 mm × 6.2 mm body size, and exposed thermal pad (not electrically connected). Pin 1 is located at top-left corner with dot marking; pin numbering proceeds counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +VCC (Pins 1, 9) | Primary power supply | Dual power pins reduce IR drop and improve PSRR; accepts 2.7–5.25 V with internal regulation for analog/digital sections. |
| CH0–CH3 (Pins 2–5) | Analog input channels | Four independent single-ended or configurable differential inputs; each has 25 pF capacitance and ±200 nA leakage at +25°C. |
| COM (Pin 6) | Analog ground reference | Sets zero-code voltage in single-ended mode; must be tied to system AGND or bias point-floating connection invalidates calibration. |
| SHDN (Pin 7) | Hardware shutdown control | Active-low input; pulls supply current to <15 µW when driven LOW, with full wake-up in <1 µs after rising edge on CS. |
| VREF (Pin 8) | External reference input | Unbuffered CDAC driver; accepts 100 mV–VCC; draws 13 µA typical at 2.5 V/125 kHz, scaling linearly with fSAMPLE and VREF. |
| GND (Pin 10) | Digital/analog common ground | Single ground pin requires star-point layout; separation from COM minimizes digital noise coupling into analog path. |
| MODE (Pin 11) | Resolution select override | Hardwired LOW on ADS7841ES to force 12-bit conversion regardless of control byte MODE bit-ensures deterministic resolution. |
| DOUT (Pin 12) | Serial data output | Three-state CMOS output enabled only when CS = LOW; data valid on DCLK falling edge, MSB-first straight binary format. |
| BUSY (Pin 13) | Conversion status indicator | Open-drain compatible; goes HIGH at start of conversion and LOW upon completion-enables interrupt-driven firmware polling. |
| DIN (Pin 14) | Serial command input | Latches control byte on DCLK rising edge; accepts 8-bit command (S-A2-A1-A0-MODE-SGL/DIF-PD1-PD0) to configure channel, mode, and power state. |
| CS (Pin 15) | Chip select / conversion trigger | Edge-sensitive enable; falling edge initiates acquisition; rising edge disables DOUT/BUSY and resets internal state machine. |
| DCLK (Pin 16) | Master clock input | Drives SAR logic and serial I/O; supports up to 3.2 MHz (200 kHz × 16) for full-speed operation; tolerant to 5.5 V regardless of +VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 4-channel multiplexer | Reduces external component count and PCB area vs discrete mux + ADC solutions; eliminates inter-channel crosstalk beyond 120 dB at 50 kHz. |
| Programmable 8-/12-bit resolution | Enables dynamic trade-off between speed and precision-8-bit mode achieves 2× higher throughput with 25% fewer clocks per conversion. |
| Flexible reference input (100 mV to VCC) | Permits direct use of low-noise bandgap references or scaled system rails; LSB scales as VREF/4096, enabling sub-millivolt resolution at low VREF. |
| Three power management modes | Full-power (2 mW), auto power-down (3 µA between conversions), and hardware shutdown (<15 µW)-supports adaptive energy budgeting in IoT endpoints. |
| CMOS-compatible serial interface | Eliminates need for level shifters with 3.3 V/5 V microcontrollers; DCLK and DIN tolerate 5.5 V, simplifying mixed-voltage system design. |
| Guaranteed operation to +125°C | Validated performance across full industrial temperature range-no derating required for engine control units, inverters, or downhole tools. |
Applications
| Industrial Process Monitoring | Portable Multi-Channel Data Logger |
|---|---|
Use Scenario: Continuous acquisition of temperature, pressure, and flow sensor outputs in PLC I/O modules with isolated fieldbus communication. IC Role / Device Role / Timing Role: Primary ADC front-end converting four analog process signals into digital values for Modbus RTU transmission via UART-isolated RS-485. Use Value: 12-bit resolution and ±1 LSB linearity ensure <0.025% full-scale accuracy across 0–100°C ambient; 125°C rating permits mounting directly on DIN-rail enclosures near heat-generating drives. | Use Scenario: Battery-powered handheld instrument recording vibration spectra, humidity, and ambient light across multiple sensors during field inspections. IC Role / Device Role / Timing Role: Low-power sampling hub managing time-synchronized reads from four MEMS accelerometers and environmental sensors using burst-mode acquisition. Use Value: 2 mW active power and <15 µW shutdown extend AA battery life to >6 months; SSOP-16 footprint enables compact 4-layer PCB with minimal decoupling (two 0.1 µF + one 1 µF). |
| Automotive Cabin Climate Control | Test & Measurement Equipment |
Use Scenario: Real-time digitization of cabin air temperature, evaporator outlet, sunload, and humidity sensors in HVAC control units. IC Role / Device Role / Timing Role: Sensor interface ADC providing 12-bit samples to 8-bit MCU every 100 ms for PID loop computation and PWM fan speed adjustment. Use Value: Guaranteed operation at +125°C allows placement near heater cores without heatsinks; COM pin referencing enables ratiometric measurements against shared 2.5 V reference for drift cancellation. | Use Scenario: Modular benchtop multimeter with simultaneous voltage, current, and resistance measurement capability using shared analog front-end. IC Role / Device Role / Timing Role: High-fidelity acquisition engine delivering 72 dB SINAD and 125 kHz throughput for AC RMS calculations and harmonic analysis. Use Value: 72 dB SINAD and 120 dB channel isolation prevent cross-talk between voltage/current ranges; programmable resolution supports both fast continuity checks (8-bit) and precision calibration (12-bit). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1247ACPP+ | 12-bit, 4-channel, SPI-compatible, –40°C to +85°C; lacks SHDN pin and 125°C qualification. | Not suitable for under-hood or high-temp industrial environments; requires external shutdown control logic. | Select MAX1247ACPP+ only for cost-sensitive commercial-grade systems where extended temperature is not required. |
| ADS7841EB/2K5 | Same pinout and functionality as ADS7841ES/2K5 but rated –40°C to +85°C with ±1 LSB INL (tighter than ES grade's ±2 LSB). | Preferred for lab equipment or consumer devices needing highest linearity at room temperature; not rated for 125°C operation. | Choose ADS7841EB/2K5 when ±1 LSB INL is mandatory and ambient stays below 85°C; otherwise ADS7841ES/2K5 provides broader thermal margin. |
Compared with MAX1247ACPP+, ADS7841ES/2K5 adds guaranteed 125°C operation and dedicated SHDN pin for ultra-low-power sleep states; compared with ADS7841EB/2K5, it trades ±1 LSB INL for extended temperature range-making it optimal for harsh-environment embedded control where reliability outweighs marginal linearity gain.
Availability
ADS7841ES/2K5 is available at Aetrix Electronics and suitable for industrial process monitoring, automotive cabin control, and portable data logging requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADS7841ES/2K5 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with over 50 years of precision data converter innovation.
The ADS7841 product line delivers low-power, multi-channel SAR ADCs optimized for battery-operated instrumentation, industrial sensing, and space-constrained embedded systems requiring high accuracy and wide supply/temperature flexibility.
FAQ
What is the maximum operating temperature specification for ADS7841ES/2K5?
The ADS7841ES/2K5 is fully specified and tested from –40°C to +125°C. This extended temperature range is exclusive to the ES grade and distinguishes it from E, EB, P, and PB variants rated only to +85°C. Operation at +125°C is guaranteed for all electrical parameters including INL, DNL, throughput, and power consumption as documented in the SBAS084B datasheet.
Does ADS7841ES/2K5 support true differential input mode?
Yes, ADS7841ES/2K5 supports true differential input mode using any two of its four analog input channels (e.g., CH0 and CH1) as +IN and –IN, with configuration controlled by the SGL/DIF bit and A2–A0 channel select bits in the serial control byte. In this mode, the device measures the voltage difference between the selected pair while rejecting common-mode signals up to 1.25 V on the –IN pin.
How does the MODE pin affect resolution setting on ADS7841ES/2K5?
On ADS7841ES/2K5, the MODE pin is internally hardwired LOW to enforce fixed 12-bit conversion regardless of the MODE bit in the control byte. This eliminates resolution ambiguity and ensures deterministic behavior in safety-critical or high-reliability applications where firmware errors or noise-induced bit flips could otherwise cause unintended 8-bit operation.
What reference voltage range is supported by ADS7841ES/2K5?
ADS7841ES/2K5 accepts an external reference voltage (VREF) from 100 mV to +VCC (2.7–5.25 V). The LSB size scales linearly as VREF/4096-e.g., 24 µV at 100 mV or 1.22 mV at 5 V. Lower VREF increases sensitivity to noise and layout parasitics, requiring clean bypassing and low-impedance reference sources for stable operation.
Is ADS7841ES/2K5 pin-compatible with other grades in the ADS7841 family?
Yes, ADS7841ES/2K5 shares identical pinout and footprint with all ADS7841 variants-including ADS7841E/2K5, ADS7841EB/2K5, ADS7841P, and ADS7841PB-in both SSOP-16 (DBQ) and DIP-16 (N) packages. This allows drop-in replacement across temperature and accuracy grades without PCB redesign, provided system-level requirements (e.g., 125°C operation, ±1 LSB INL) are verified.
ADS7841ES/2K5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 4
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V, 5V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V, 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS7841ES/2K5 FAQ
1.How can I place an order for ADS7841ES/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7841ES/2K5 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADS7841ES/2K5 reliable?
The price and inventory of ADS7841ES/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7841ES/2K5 is usually 5 days.
3.What payment methods are accepted for ADS7841ES/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7841ES/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7841ES/2K5?
ADS7841ES/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7841ES/2K5 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADS7841ES/2K5?
For technical support, including ADS7841ES/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7841ES/2K5 requirements.
6.How does Aetrix verify that ADS7841ES/2K5 is sourced from the original manufacturer or authorized distributors?
All ADS7841ES/2K5 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADS7841ES/2K5 meets industry standards.
7.What is the process for return or replacement of ADS7841ES/2K5?
All ADS7841ES/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with ADS7841ES/2K5, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADS7841ES/2K5 part is unused and in its original packaging.
Return procedure for ADS7841ES/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADS7841ES/2K5 Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
