My Inquiry
My Account
Texas Instruments ADC08831IMM/NOPB
- Part No.:
- ADC08831IMM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADC08831IMM/NOPB.pdf
- Description:
- IC ADC 8BIT SAR 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,675
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADC08831IMM/NOPB from Texas Instruments is an 8-bit successive-approximation analog-to-digital converter with integrated 2-channel analog multiplexer, track/hold function, and 3-wire serial interface (CS, CLK, DI/DO). It operates from a single 5V supply, delivers ±1 LSB total unadjusted error, and achieves 4 μs max conversion time at 2 MHz clock - enabling real-time sensor digitization in compact embedded systems.
For engineers reviewing the ADC08831IMM/NOPB datasheet, ADC08831IMM/NOPB pinout, ADC08831IMM/NOPB application, or ADC08831IMM/NOPB equivalent, key selection criteria include its fixed-polarity differential input architecture, VREF pin availability for ratiometric or absolute reference scaling, TTL/CMOS-compatible I/O, and low-power mode activation via CS high.
Technical Context
The ADC08831IMM/NOPB implements a successive-approximation register (SAR) core with built-in sample-and-hold, using a ratioed capacitor array for first 5 bits and resistor ladder for last 3 bits. Its analog front-end features 300 Ω series resistance and 13 pF sampling capacitance per input, requiring <1 μs acquisition time at fCLK = 2 MHz.
Digital control uses a MICROWIRE-compliant 3-wire serial protocol: CS initiates conversion, CLK synchronizes data transfer, and DI shifts in start bit + MUX address (though ADC08831 has fixed single-ended/differential configuration and no MUX addressing). DO outputs MSB-first 8-bit result after conversion completes in exactly 8 clock cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit SAR - delivers 256 discrete output codes with no missing codes over −40°C to +85°C. |
| Conversion Time | 4 μs maximum at 2 MHz clock - enables up to 181 ksps sampling rate without external timing overhead. |
| Total Unadjusted Error | ±1 LSB maximum - includes offset, full-scale, linearity, and multiplexer errors; eliminates need for zero/full-scale calibration. |
| Supply Voltage | 4.5 V to 6.0 V - supports standard 5 V logic rails and tolerates ±10% variation without performance degradation. |
| Power Dissipation | 8.5 mW typical at 5 V, CS low - drops to 3.0 mW typical in low-power mode (CS high), reducing thermal load in battery-powered designs. |
| Analog Input Range | GND to VCC (−50 mV to VCC + 50 mV) - allows direct interfacing with transducers and sensors without level-shifting circuitry. |
| Reference Interface | External VREF pin - enables flexible ratiometric (VREF = VCC) or precision absolute (e.g., LM385-2.5V) reference configurations. |
Pinout & Package
ADC08831IMM/NOPB is housed in an 8-pin VSSOP (DGK) package - 3.0 mm × 3.0 mm body, 0.65 mm pitch - optimized for space-constrained PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply rail | Provides power for analog core, digital logic, and internal reference divider; bypassing with 0.1 μF ceramic capacitor to GND is mandatory. |
| GND | Analog and digital ground | Single-point connection to analog ground plane required; separates noise-sensitive analog paths from digital switching currents. |
| VREF | Reference voltage input | Sets full-scale range (VIN = 0 to VREF); must drive ≥2.8 kΩ load; tied to VCC for ratiometric operation. |
| IN+ | Positive analog input | Accepts single-ended or differential inputs; internally connected to 300 Ω + 13 pF sampling network. |
| IN− | Negative analog input | Enables true differential or pseudo-differential measurement; polarity fixed per ADC08831 design (IN+ > IN− yields positive code). |
| CS | Chip select / conversion trigger | Active-low signal that initiates conversion sequence and controls low-power mode (high = static current reduction). |
| CLK | Serial clock input | Drives internal timing; accepts 10 kHz–2 MHz square wave with 40–60% duty cycle; defines conversion speed and sampling rate. |
| DI/DO | Serial data I/O | Bidirectional pin: receives start bit during MUX setup (not used in ADC08831), then outputs MSB-first 8-bit result after conversion. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated track/hold | Eliminates need for external S/H circuitry; acquires analog signal during conversion, enabling accurate sampling of dynamic waveforms. |
| 2-channel analog multiplexer | Hardware-configurable single-ended or differential input pair (IN+/IN−) - simplifies multi-sensor monitoring without external switches. |
| 3-wire serial interface | Reduces board routing complexity and EMI susceptibility versus parallel ADCs; compatible with microcontrollers lacking dedicated SPI peripherals. |
| No calibration required | Guaranteed ±1 LSB TUE and monotonic transfer function across temperature - removes production test steps and field recalibration. |
| Low-power mode | Reduces supply current to ~0.6 mA (typ) when CS = high - extends battery life in intermittent-sampling applications like remote sensors. |
Applications
| Industrial Process Monitoring | Embedded Sensor Digitization |
|---|---|
Use Scenario: Continuous acquisition of temperature, pressure, and flow sensor outputs in PLC analog input modules. IC Role / Device Role / Timing Role: Primary A/D converter capturing 4–20 mA loop signals conditioned by op-amps, synchronized to system scan cycle via CS strobe. Use Value: ±1 LSB accuracy ensures sub-0.4% measurement fidelity across 0–100°C ranges; 4 μs conversion enables >100 channel/sec throughput in multiplexed systems. |
Use Scenario: On-board analog sensing in smart thermostats, HVAC controllers, and IoT edge nodes with limited PCB area. IC Role / Device Role / Timing Role: Local digitizer co-located with NTC thermistors or humidity sensors, transmitting noise-immune serial data over short traces to MCU. Use Value: VSSOP package saves >60% board space vs SOIC; 3-wire interface reduces GPIO count; low 3.0 mW standby power extends coin-cell battery life to >5 years. |
| Remote Analog Signal Acquisition | Noise-Resilient Instrumentation |
Use Scenario: Distributed sensor networks where analog signals travel meters over unshielded wires in electrically noisy factory environments. IC Role / Device Role / Timing Role: Front-end ADC placed directly at sensor node, converting analog voltage before transmission to central controller via digital bus. Use Value: Differential input rejects common-mode noise (e.g., 60 Hz pickup); GND-to-VCC input range accommodates floating sensor outputs without biasing resistors. |
Use Scenario: Portable multimeters, data loggers, and lab equipment requiring stable DC measurements under varying ambient conditions. IC Role / Device Role / Timing Role: Precision digitizer for calibrated voltage references and transducer bridges, operating with external 2.5 V shunt reference. Use Value: External VREF pin enables absolute accuracy; no missing codes guarantee monotonic response during ramp tests; 48.5 dB SNR supports 7.7 ENOB for 12-bit-equivalent resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC0831LCN/NOPB | Legacy 8-pin DIP version with identical electrical specs but larger footprint and no VSSOP option. | Preferred for through-hole prototyping or legacy board refreshes where rework is constrained. | Select when mechanical compatibility with existing DIP sockets or hand-soldered assemblies is required. |
| ADS7822U | 12-bit SAR ADC with SPI interface, 200 ksps, and internal reference; higher resolution but higher power (1.2 mW active). | Suitable for applications needing >8-bit precision (e.g., medical sensors), but requires additional reference management. | Choose when resolution upgrade justifies cost and layout changes; not drop-in due to different pinout, voltage levels, and timing. |
Compared with ADC08831IMM/NOPB, ADC0831LCN/NOPB offers identical functionality in legacy packaging but lacks surface-mount efficiency, while ADS7822U provides higher resolution at the expense of increased complexity and power - making ADC08831IMM/NOPB optimal for cost-sensitive, space-constrained 8-bit embedded digitization.
Availability
ADC08831IMM/NOPB is available at Aetrix Electronics and suitable for industrial process monitoring, embedded sensor digitization, and remote analog signal acquisition requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for ADC08831IMM/NOPB 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 decades of expertise in precision data converters and industrial-grade ICs.
ADC08831IMM/NOPB belongs to TI's legacy precision ADC family designed for cost-effective, low-power, and easy-to-integrate analog digitization in resource-constrained embedded systems - emphasizing simplicity, reliability, and minimal external component count.
FAQ
What is the maximum clock frequency supported by ADC08831IMM/NOPB?
The ADC08831IMM/NOPB supports a maximum clock frequency of 2 MHz, as specified in its operating ratings. At this frequency, conversion time is guaranteed ≤4 μs, enabling up to 181 ksps sampling. Operation below 10 kHz is not recommended, as timing margins degrade and acquisition may be incomplete. The device requires a 40–60% duty cycle clock waveform for reliable operation across temperature.
Does ADC08831IMM/NOPB require external zero or full-scale calibration?
No, ADC08831IMM/NOPB does not require external zero or full-scale adjustment. Its total unadjusted error is guaranteed ≤±1 LSB over −40°C to +85°C, covering offset, full-scale, linearity, and multiplexer errors. This eliminates production calibration steps and ensures consistent performance across units and temperature without user intervention.
Can ADC08831IMM/NOPB operate with a 3.3 V supply?
No, ADC08831IMM/NOPB is not rated for 3.3 V operation. Its absolute maximum supply voltage is 6.5 V, but the minimum operating voltage is 4.5 V per the datasheet. At 3.3 V, internal biasing fails, reference divider malfunctions, and digital logic thresholds are violated - resulting in undefined behavior, failed conversions, or permanent damage. Use only within 4.5–6.0 V range.
How does the analog input structure of ADC08831IMM/NOPB affect source impedance requirements?
The ADC08831IMM/NOPB presents a 300 Ω series resistance and 13 pF sampling capacitance at each analog input. For full accuracy, the source impedance must allow settling within ½ clock period (e.g., 250 ns at 2 MHz). Sources >1 kΩ introduce >1 mV error due to ±1 μA leakage current; use op-amp buffering or RC filters for high-impedance sensors to ensure valid conversion results.
Is ADC08831IMM/NOPB pin-compatible with ADC0831?
Yes, ADC08831IMM/NOPB is a superior pin-compatible replacement for ADC0831, sharing identical pinout, electrical specifications, and functional behavior in 8-pin SOIC and VSSOP packages. TI explicitly states this compatibility in the datasheet features list, confirming drop-in replacement capability without PCB or firmware changes for legacy ADC0831 designs.
ADC08831IMM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- Data Interface:
- SPI, DSP
- 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:
- 4.5V ~ 6V
- Voltage - Supply, Digital:
- 4.5V ~ 6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC08831IMM/NOPB FAQ
1.How can I place an order for ADC08831IMM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC08831IMM/NOPB 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 ADC08831IMM/NOPB reliable?
The price and inventory of ADC08831IMM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC08831IMM/NOPB is usually 5 days.
3.What payment methods are accepted for ADC08831IMM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC08831IMM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC08831IMM/NOPB?
ADC08831IMM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC08831IMM/NOPB 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 ADC08831IMM/NOPB?
For technical support, including ADC08831IMM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC08831IMM/NOPB requirements.
6.How does Aetrix verify that ADC08831IMM/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC08831IMM/NOPB 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 ADC08831IMM/NOPB meets industry standards.
7.What is the process for return or replacement of ADC08831IMM/NOPB?
All ADC08831IMM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC08831IMM/NOPB, 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 ADC08831IMM/NOPB part is unused and in its original packaging.
Return procedure for ADC08831IMM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADC08831IMM/NOPB 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…
