My Inquiry
My Account
Texas Instruments ADS7816UC/2K5G4
- Part No.:
- ADS7816UC/2K5G4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADS7816UC/2K5G4.pdf
- Description:
- IC ADC 12BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,987
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADS7816UC/2K5G4 from Texas Instruments (formerly Burr-Brown) is a 12-bit, 200kHz sampling SAR analog-to-digital converter with differential input, synchronous serial interface, and programmable reference voltage (100mV–5V). It delivers 1.22mV LSB resolution at 5V reference, 1.9mW power at full rate, and 3µA shutdown current-enabling high-precision data acquisition in space-constrained, battery-powered remote sensing nodes.
For engineers reviewing the ADS7816UC/2K5G4 datasheet, ADS7816UC/2K5G4 pinout, ADS7816UC/2K5G4 application, or ADS7816UC/2K5G4 equivalent, this page provides verified technical context, package-specific pin mapping, real-world use-value analysis for isolated and low-power systems, and two validated alternative parts with documented functional trade-offs.
Technical Context
The ADS7816UC/2K5G4 implements a capacitive redistribution successive approximation register (SAR) architecture on 0.6µm CMOS, integrating sample-and-hold functionality. Its conversion cycle requires exactly 12 clock cycles, with 1.5-cycle acquisition time, and outputs 12-bit straight-binary data MSB-first on DOUT synchronized to DCLOCK falling edges.
It operates from a single +5V supply (4.5–5.25V), accepts external reference voltages from 100mV to 5V, and uses CS/SHDN both to initiate conversion (active-low) and enter full power-down mode (active-high). Analog inputs (+In/–In) support true differential acquisition with ±200mV common-mode range on –In for remote ground sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes; enables sub-millivolt measurement fidelity when VREF ≥ 1V. |
| Sampling Rate | 200kHz - supports real-time monitoring of signals up to ~99kHz (Nyquist), e.g., audio-band sensor outputs or motor control feedback. |
| Reference Range | 100mV to 5V - sets full-scale span; LSB scales linearly (e.g., 24µV at 100mV, 1.22mV at 5V), directly impacting noise floor and error sensitivity. |
| Power Consumption | 1.9mW at 200kHz - enables continuous operation in coin-cell-powered devices; drops to 150µW at 12.5kHz for duty-cycled sensing. |
| Shutdown Current | 3µA max - allows >1000-hour battery life in wake-on-event architectures where CS remains high between acquisitions. |
| Differential Input | +In/–In pair - rejects common-mode noise below ±200mV on –In; ideal for thermocouple or bridge-sensor interfaces with remote ground references. |
| Serial Interface | 3-wire synchronous (CS/SHDN, DCLOCK, DOUT) - eliminates parallel bus overhead; compatible with SPI master modes using falling-edge sampling. |
Pinout & Package
ADS7816UC/2K5G4 is packaged in an 8-lead SOIC (Small Outline Integrated Circuit) with 1.27mm lead pitch, JEDEC MS-012AC compliant, body size 4.9mm × 3.9mm × 1.75mm. Pin 1 marked by beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VREF | Reference voltage input | Accepts 100mV–5V external reference; supplies internal DAC array; current draw varies with code and sample rate (2.4–100µA). |
| 2 +In | Non-inverting analog input | Differential input node; must remain within GND–0.2V to VCC+0.2V; 25pF input capacitance requires low-impedance source for 12-bit settling in 1.5 clock cycles. |
| 3 –In | Inverting analog input | Common-mode sense node; limited to ±200mV relative to local GND; used for remote ground referencing to reject cable-induced offsets. |
| 4 GND | Analog ground reference | Primary return path for analog circuitry; must connect to clean analog ground plane, physically separated from digital ground traces. |
| 5 CS/SHDN | Chip select / shutdown control | Active-low to start conversion and enable serial output; driven high to enter full power-down (3µA), disabling both analog and digital sections. |
| 6 DOUT | Serial data output | 3-state CMOS output; drives 12-bit straight-binary result MSB-first on DCLOCK falling edge; tri-states after LSB transmission if CS remains low. |
| 7 DCLOCK | Data clock input | Synchronizes conversion timing and serial output; supports 10kHz–3.2MHz; minimum high/low pulse width = 150ns. |
| 8 +VCC | Positive power supply | Single +5V supply (4.5–5.25V); powers all internal circuitry; requires 0.1µF ceramic bypass capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Micro-power operation | 1.9mW at 200kHz enables continuous acquisition in portable medical monitors or wireless sensor nodes without thermal derating. |
| Differential input architecture | True differential sampling with dedicated –In pin allows rejection of ground potential shifts in long-cable industrial transducers. |
| Programmable reference range | 100mV–5V scaling permits direct interfacing with low-output sensors (e.g., thermocouples) without gain-stage amplification. |
| Short-cycling capability | CS can terminate conversion mid-sequence (after any bit), reducing average power in threshold-detection applications like overvoltage alarms. |
| CMOS-compatible serial interface | 3-wire synchronous protocol eliminates address decoding logic and reduces PCB routing complexity versus parallel ADCs. |
Applications
| Thermocouple-Based Temperature Monitoring | Isolated Industrial Sensor Node |
|---|---|
Use Scenario: Measuring J/K-type thermocouple outputs in HVAC control panels with 0.1°C resolution across –200°C to +1200°C range. IC Role / Device Role / Timing Role: ADC front-end converting µV-level differential thermocouple voltage to 12-bit digital values; referenced to 100mV for optimal LSB matching. Use Value: Eliminates need for precision instrumentation amplifier stage; differential input rejects common-mode noise from shared 24V DC power rails. |
Use Scenario: Remote vibration monitoring on rotating machinery using piezoelectric accelerometers in explosion-proof enclosures. IC Role / Device Role / Timing Role: High-fidelity signal digitizer acquiring 10kHz bandwidth acceleration waveforms; powered from isolated DC/DC converter. Use Value: 200kHz sampling captures harmonics up to 5th order; 3µA shutdown extends battery life during idle periods between scheduled measurements. |
| Battery-Powered Data Logger | Multi-Channel Sensor Multiplexing |
Use Scenario: Environmental logging (temperature, humidity, light) in agricultural field deployments lasting >1 year on AA batteries. IC Role / Device Role / Timing Role: Low-duty-cycle ADC acquiring 12-bit samples every 10 seconds; enters 3µA shutdown between conversions. Use Value: 150µW at 12.5kHz sampling reduces average current to <1µA per acquisition, enabling multi-year operation without maintenance. |
Use Scenario: Simultaneous acquisition from 8 pressure transducers in automotive brake-by-wire test rigs using analog multiplexer switching. IC Role / Device Role / Timing Role: High-speed ADC supporting 200kHz throughput per channel via time-division multiplexing with fast settling. Use Value: 1.5-clock-cycle acquisition time ensures full 12-bit accuracy even with 1kΩ source impedance from mux output buffers. |
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 |
|---|---|---|---|
| ADS7816UB | Same SOIC package, identical pinout and electrical specs, but ±2LSB integral linearity (vs ±1LSB for UC grade). | Acceptable for non-critical industrial monitoring where 12-bit monotonicity suffices but absolute accuracy <±1LSB is not required. | Select ADS7816UB only if cost sensitivity outweighs need for guaranteed ±1LSB INL performance across temperature. |
| ADS8320E/2K5 | 16-bit, 100kSPS SAR ADC in same SOIC-8 package; higher resolution but lower speed and 2.7–5.5V supply range. | Better suited for precision weigh scales or calibration equipment requiring <0.1mV resolution, not high-speed transient capture. | Choose ADS8320E/2K5 only when resolution priority exceeds sampling rate needs-and verify layout accommodates higher analog sensitivity. |
Compared with ADS7816UC/2K5G4, ADS7816UB trades guaranteed ±1LSB linearity for lower cost in identical form factor, while ADS8320E/2K5 sacrifices 2× speed to deliver 4× resolution-making each suitable only for distinct accuracy/speed design constraints.
Availability
ADS7816UC/2K5G4 is available at Aetrix Electronics and suitable for battery-powered data loggers, isolated industrial sensor nodes, thermocouple-based temperature monitoring, and multi-channel multiplexed acquisition systems requiring stable component supply across extended production lifecycles.
Supply support for ADS7816UC/2K5G4 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 acquired Burr-Brown in 2000 and maintains its precision analog portfolio. TI is a global leader in high-performance data converters, op amps, and interface ICs for industrial, automotive, and medical applications.
The ADS7816UC/2K5G4 belongs to TI's legacy Burr-Brown SAR ADC family, designed specifically for ultra-low-power, high-accuracy data acquisition in space- and energy-constrained environments such as portable instrumentation and distributed sensor networks.
FAQ
What is the maximum sampling rate supported by the ADS7816UC/2K5G4?
The ADS7816UC/2K5G4 supports a maximum sampling rate of 200kHz, achieved with a 3.2MHz DCLOCK frequency (16× oversampling ratio). At this rate, conversion time is fixed at 12 clock cycles, and acquisition completes within 1.5 clock cycles-ensuring full 12-bit accuracy for input signals with ≤1kΩ source impedance.
Does the ADS7816UC/2K5G4 require an external reference voltage?
Yes, the ADS7816UC/2K5G4 requires an external reference voltage applied to the VREF pin. It accepts 100mV to 5V, setting the full-scale input range and LSB size (e.g., 1.22mV at 5V, 24µV at 100mV). No internal reference is provided; reference stability and noise directly impact measurement accuracy and ENOB.
What package type is used for the ADS7816UC/2K5G4?
The ADS7816UC/2K5G4 is supplied in an 8-lead SOIC (Small Outline Integrated Circuit) package, compliant with JEDEC MS-012AC standard. It measures 4.9mm × 3.9mm × 1.75mm with 1.27mm lead pitch and features gull-wing leads for surface-mount assembly.
How does the differential input of the ADS7816UC/2K5G4 function in practice?
The ADS7816UC/2K5G4 uses dedicated +In and –In pins for true differential sampling: the voltage difference (+In – –In) is captured on the internal capacitor array. The –In pin is restricted to ±200mV relative to local GND, making it ideal for remote ground sensing-not general-purpose differential signaling-thereby rejecting cable-induced offset drift.
Can the ADS7816UC/2K5G4 be powered down between conversions to save energy?
Yes, the ADS7816UC/2K5G4 supports full power-down mode when CS/SHDN is driven HIGH, reducing supply current to ≤3µA. This feature is essential for battery-operated systems, allowing microcontroller-controlled wake-up cycles with minimal quiescent drain-extending operational life by orders of magnitude compared to continuous sampling.
ADS7816UC/2K5G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS7816UC/2K5G4 FAQ
1.How can I place an order for ADS7816UC/2K5G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7816UC/2K5G4 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 ADS7816UC/2K5G4 reliable?
The price and inventory of ADS7816UC/2K5G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7816UC/2K5G4 is usually 5 days.
3.What payment methods are accepted for ADS7816UC/2K5G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7816UC/2K5G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7816UC/2K5G4?
ADS7816UC/2K5G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7816UC/2K5G4 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 ADS7816UC/2K5G4?
For technical support, including ADS7816UC/2K5G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7816UC/2K5G4 requirements.
6.How does Aetrix verify that ADS7816UC/2K5G4 is sourced from the original manufacturer or authorized distributors?
All ADS7816UC/2K5G4 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 ADS7816UC/2K5G4 meets industry standards.
7.What is the process for return or replacement of ADS7816UC/2K5G4?
All ADS7816UC/2K5G4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS7816UC/2K5G4, 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 ADS7816UC/2K5G4 part is unused and in its original packaging.
Return procedure for ADS7816UC/2K5G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADS7816UC/2K5G4 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…
