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Texas Instruments ADC08832IMX
- Part No.:
- ADC08832IMX
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADC08832IMX.pdf
- Description:
- IC ADC 8BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,156
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Product details
Overview
ADC08832IMX 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, achieves ≤4μs conversion time at 2MHz clock, and delivers ±1LSB total unadjusted error across −40°C to +85°C. It is used in embedded sensor digitization where space-constrained, low-power, noise-immune serial ADCs interface directly with microcontrollers.
For engineers reviewing the ADC08832IMX datasheet, ADC08832IMX pinout, ADC08832IMX application, or ADC08832IMX equivalent, key selection considerations include its software-configurable single-ended/differential input modes, VREF-tied-to-VCC architecture, 153ksps sampling rate, and SOIC/VSSOP-8 package compatibility with legacy ADC0831/2 designs.
Technical Context
The ADC08832IMX implements a successive-approximation register (SAR) core with a built-in sample-and-hold that acquires input signals in single-ended, differential, or pseudo-differential configurations. Its analog front-end includes a 300Ω series resistance and 13pF sampling capacitor per input channel, requiring careful source impedance management for full accuracy.
Its 3-wire serial interface complies with MICROWIRE protocol: CS initiates conversion, CLK synchronizes data transfer, and DI shifts in the 3-bit MUX address (start bit + SGL/DIF + ODD/SIGN), after which DO outputs MSB-first conversion result. The internal reference is fixed to VCC, eliminating external reference components but limiting ratiometric flexibility compared to ADC08831.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8 bits - delivers 256 discrete output codes over full-scale range |
| Conversion Time | ≤4 μs at fCLK = 2 MHz - enables up to 153 ksps sampling rate |
| Total Unadjusted Error | ±1 LSB - guarantees monotonicity and no missing codes over temperature |
| Supply Voltage Range | 4.5 V to 6.0 V - supports standard 5V systems with ±10% tolerance |
| Power Dissipation | Typ. 8.5 mW active / 3.0 mW low-power mode - reduces thermal load in battery or space-constrained designs |
| Analog Input Range | GND to VCC (with ±50 mV diode clamp margin) - allows direct interfacing with 0–5V sensors without level-shifting |
| Input Multiplexer | 2-channel configurable - supports software-selectable single-ended or differential operation per conversion |
Pinout & Package
ADC08832IMX is housed in an 8-pin SOIC (D) or VSSOP (DGK) surface-mount package, both measuring 3.9 mm × 4.9 mm (SOIC) or 3.0 mm × 3.0 mm (VSSOP), with 1.27 mm pitch. Pin functions are electrically identical across packages.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select Input | Active-low enable: must remain low throughout conversion; high state places device in low-power mode |
| CLK | Serial Clock Input | Drives all timing: rising edge samples DI; falling edge outputs DO data (MSB first) |
| DI | Data Input | Shifts in 3-bit MUX address (start bit + SGL/DIF + ODD/SIGN) before conversion begins |
| DO | Data Output | Tri-state output: drives MSB-first 8-bit result after MUX settling; goes low after completion until CS rises |
| VIN(+) / CH0 | Positive Analog Input / Channel 0 | Selectable as + input in differential mode or as single-ended input; internally connected to sample/hold capacitor |
| VIN(−) / CH1 | Negative Analog Input / Channel 1 | Selectable as − input in differential mode or as second single-ended input; shares same 300Ω + 13pF input structure |
| VCC | Power Supply | Single 4.5–6.0 V supply; also serves as internal reference voltage (VREF = VCC) |
| GND | Ground Reference | Analog and digital common return; requires low-impedance connection to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable input topology | Per-conversion selection of single-ended, differential, or pseudo-differential mode via 3-bit MUX address |
| VREF tied to VCC | Eliminates external reference component and associated layout complexity; enables true ratiometric measurement |
| Integrated track/hold | Acquires analog signal during conversion without external circuitry; supports input settling within ½ clock period |
| Low-power serial interface | 3-wire MICROWIRE-compatible link reduces PCB routing, improves noise immunity, and minimizes I/O pin count on host MCU |
| No zero/full-scale adjustment | Factory-trimmed offset and gain ensure ±1 LSB TUE across temperature without calibration overhead |
Applications
| Remote Sensor Digitization | Industrial Process Monitoring |
|---|---|
Use Scenario: Converting thermistor, RTD, or pressure transducer outputs located meters away from the controller in factory-floor environments. IC Role / Device Role / Timing Role: ADC08832IMX acts as local analog front-end, performing digitization at the sensor node and transmitting noise-immune serial data over twisted-pair wiring. Use Value: Eliminates analog signal degradation over long traces; 2-channel mux allows dual-sensor polling without external multiplexing hardware. |
Use Scenario: Monitoring voltage, current, and temperature feedback signals in PLC analog input modules operating under EMI-heavy conditions. IC Role / Device Role / Timing Role: ADC08832IMX provides isolated, differential-input acquisition with common-mode rejection for 60Hz line noise suppression. Use Value: Built-in differential mode and 13pF input capacitance enable stable sampling even with moderate source impedances (<1kΩ), reducing need for op-amp buffering. |
| Embedded System Telemetry | Low-Cost Instrumentation Front-End |
Use Scenario: Battery-powered environmental loggers acquiring temperature/humidity data at 10–100 Hz intervals for wireless transmission. IC Role / Device Role / Timing Role: ADC08832IMX serves as power-optimized A/D subsystem, entering low-power mode between conversions to extend runtime. Use Value: 3.0 mW typical standby power and automatic sleep-on-CS-high reduce average system current, enabling multi-year coin-cell operation. |
Use Scenario: Portable multimeters or handheld test equipment requiring compact, low-cost digitization of DC and low-frequency AC signals. IC Role / Device Role / Timing Role: ADC08832IMX functions as primary ADC engine, leveraging its ±1 LSB linearity and no-missing-codes guarantee for accurate display resolution. Use Value: Factory-calibrated performance eliminates field calibration steps; 8-pin SOIC/VSSOP footprint simplifies layout and reduces BOM cost versus 14-pin alternatives. |
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 |
|---|---|---|---|
| ADC08831IMX | Separate VREF pin; no MUX addressing; fixed differential input only | Requires external reference for absolute accuracy; unsuitable for dual-channel scanning | Choose when precise reference control is needed and only one differential pair is measured |
| ADS7822U | 2.7–5.25 V supply; SPI-compatible; 125 ksps; 10-bit resolution | Higher resolution but lower speed; different serial framing and timing requirements | Choose when >8-bit precision is required and supply voltage may drop below 4.5 V |
Compared with ADC08831IMX and ADS7822U, the ADC08832IMX uniquely combines VREF = VCC simplicity, dual-channel software-selectable inputs, and guaranteed monotonic 8-bit performance in an industry-standard 8-pin SOIC/VSSOP footprint-making it optimal for cost-sensitive, space-constrained industrial and embedded sensing nodes.
Availability
ADC08832IMX is available at Aetrix Electronics and suitable for remote sensor digitization, industrial process monitoring, and embedded telemetry requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for ADC08832IMX 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 experience in precision data converters and industrial-grade ICs.
The ADC08832IMX belongs to TI's legacy 8-bit serial ADC family designed for cost-effective, low-power, noise-immune digitization in resource-constrained embedded systems and industrial sensor interfaces.
FAQ
What is the maximum clock frequency supported by ADC08832IMX?
The ADC08832IMX supports a maximum clock frequency of 2 MHz, as specified in its Operating Ratings and Electrical Characteristics tables. At this frequency, conversion time is guaranteed ≤4 μs, enabling a maximum sampling rate of 153 ksps. Operation above 2 MHz risks timing violations, incomplete conversions, or increased total unadjusted error beyond ±1 LSB.
Does ADC08832IMX require an external voltage reference?
No, ADC08832IMX does not require an external voltage reference. Its reference voltage (VREF) is internally tied to VCC, as confirmed in the Functional Block Diagram and Electrical Characteristics section. This design eliminates external reference components and simplifies ratiometric measurements but precludes independent reference scaling for absolute-accuracy applications.
How many analog input channels does ADC08832IMX support?
The ADC08832IMX supports two analog input channels (CH0 and CH1), configurable via software-controlled MUX addressing into single-ended, differential, or pseudo-differential modes. Unlike the ADC08831IMX, which has only one differential pair, the ADC08832IMX enables flexible per-conversion channel selection and polarity assignment using its 3-bit address sequence.
What package options are available for ADC08832IMX?
The ADC08832IMX is offered in two RoHS-compliant surface-mount packages: 8-pin SOIC (D package, 3.9 mm × 4.9 mm) and 8-pin VSSOP (DGK package, 3.0 mm × 3.0 mm). Both share identical pinout and electrical characteristics; the VSSOP variant provides smaller footprint and thermal resistance (122°C/W vs. 235°C/W for SOIC), making it preferable for high-density or thermally constrained layouts.
Is ADC08832IMX pin-compatible with older ADC0831/2 devices?
Yes, ADC08832IMX is explicitly documented as a "superior pin compatible replacement for ADC0831/2" in its TI datasheet (SNAS015C). It maintains identical 8-pin SOIC/VSSOP pin assignments, logic-level compatibility (TTL/CMOS), and functional equivalence in basic serial readout-enabling drop-in upgrades with improved specs including lower power, enhanced linearity, and added MUX flexibility.
ADC08832IMX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 2
- 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:
- Supply
- Voltage - Supply, Analog:
- 4.5V ~ 6V
- Voltage - Supply, Digital:
- 4.5V ~ 6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC08832IMX FAQ
1.How can I place an order for ADC08832IMX through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC08832IMX 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 ADC08832IMX reliable?
The price and inventory of ADC08832IMX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC08832IMX is usually 5 days.
3.What payment methods are accepted for ADC08832IMX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC08832IMX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC08832IMX?
ADC08832IMX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC08832IMX 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 ADC08832IMX?
For technical support, including ADC08832IMX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC08832IMX requirements.
6.How does Aetrix verify that ADC08832IMX is sourced from the original manufacturer or authorized distributors?
All ADC08832IMX 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 ADC08832IMX meets industry standards.
7.What is the process for return or replacement of ADC08832IMX?
All ADC08832IMX units undergo pre-shipment inspection (PSI). If there is an issue with ADC08832IMX, 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 ADC08832IMX part is unused and in its original packaging.
Return procedure for ADC08832IMX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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