ADC08832IMM - 8-Bit 2-Ch Serial I/O CMOS ADC | VSSOP-8 | Texas Instruments
N.º de pieza: ADC08832IMM ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.18 | $2,18 |
| 10 | $1.96 | $19,60 |
| 100 | $1.74 | $174,00 |
| 500 | $1.55 | $775,00 |
| 1.000 | $1.36 | $1.360,00 |
ADC08832IMM Descripción general
An ADC (analog-to-digital converter) is a semiconductor that converts real-world analog voltages into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. SAR ADCs sample the input, hold it on an internal capacitor, and run a binary search via an internal DAC until the digital output matches the analog input; they are valued for determinism, low latency, and a single conversion per request. The ADC08832 family is positioned for cost-sensitive, space-constrained embedded designs that need 8-bit resolution and serial connectivity rather than high-throughput parallel conversion.
Headline features include 8-bit resolution with no missing codes, a serial interface that requires only three wires (CS, CLK, DOUT) per the TI datasheet, an analog input range from GND to VCC, TTL/CMOS-compatible digital I/O, and an internal track-and-hold stage that eliminates the need for an external sample capacitor. The device is a drop-in upgrade for legacy ADC0831/ADC0832 designs and shares the same serial protocol, simplifying firmware migration.
Architecturally the part combines a 2-channel input multiplexer, a sample-and-hold amplifier, a SAR core, an internal reference-free DAC, and a state-machine-driven serial output stage. Power dissipation is approximately 8.5 mW typical, and the converter operates across the -40 C to +85 C industrial temperature range, making it suitable for both indoor and moderately harsh environments.
Typical applications include portable instrumentation, sensor signal digitization, battery monitoring systems, digital panel meters, process-control front ends, and any space-constrained embedded design that needs 8-bit accuracy on a single low-pin-count serial bus. Two multiplexer inputs allow designers to monitor a primary signal plus an auxiliary channel such as temperature or supply voltage with one ADC.
The primary design tradeoff is resolution - 8 bits limits dynamic range to roughly 48 dB - so choose a 10/12-bit SAR if finer steps are required. The serial interface also imposes throughput limits compared to parallel ADCs; at 2 MHz CLK and 16 clocks per conversion, maximum throughput is around 125 ksps per channel in 2-channel mode.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement the manufacturer datasheet and help engineers evaluate the ADC08832IMM against modern alternatives.
Alternativas directas para ADC08832IMM — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ADC08832IMM (mismo factor de forma y huella) — difiere en Data Interface, Number of Input Channels, Resolution, Operating Temperature Range, Package.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ADC08831IMM/NOPB
✅ Sustitución directa✓ En stock
$0.95 / unidad
Ver hoja de datos →ADC08832IMM/NOPB
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADC08832IWM/NOPB
✅ Sustitución directa✓ En stock
$1.92 / unidad
Ver hoja de datos →ADC08831IMX
✅ Sustitución directa✓ En stock
$0.78 / unidad
Ver hoja de datos →AD7992BRMZ-1-R2
✅ Sustitución directa✓ En stock
$3.35 / unidad
Ver hoja de datos →ADC08832IMM Valores máximos y características eléctricas
| Resolución | 8 bits |
| Number of Input Channels | 2 (single-ended, multiplexed) |
| Converter Architecture | SAR (Successive Approximation Register) |
| Analog Supply Voltage (VCC) | 4.5 V to 6.3 V |
| Conversion Time (fCLK = 2 MHz) | 4 us (max) |
| Data Interface | 3-Wire Serial (CS, CLK, DOUT) |
| Analog Input Voltage Range | GND to VCC |
| Track/Hold Function | Yes, internal |
| Power Dissipation (typical) | 8.5 mW |
| Digital I/O Compatibility | TTL/CMOS |
| Rango de temperatura de funcionamiento | -40 C to +85 C |
| Encapsulado | 8-VSSOP (DGK) |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant (NOPB suffix) |
| Pin-Compatible Replacement For | ADC0831, ADC0832 |
Configuración de pines de ADC08832IMM
| Pin 1 | VCC — Analog supply voltage (4.5 V to 6.3 V) |
| Pin 2 | CH0 — Analog input channel 0 |
| Pin 3 | CH1 — Analog input channel 1 |
| Pin 4 | GND — Analog and digital ground |
| Pin 5 | DOUT — Serial data output (MSB first) |
| Pin 6 | CLK — Serial clock input |
| Pin 7 | CS — Chip select (active low) |
| Pin 8 | NC — Not connected (per datasheet) |
Aplicaciones típicas
ADC08832IMM es adecuado para 6 aplicacións: Portable Battery Monitoring, Industrial Process Control Sensors, Digital Panel Meters, Embedded Sensor Signal Digitization, Automotive Interior Sensor Hubs, Medical Monitoring Equipment.
Portable Battery Monitoring
The ADC08832IMM's 2-channel multiplexer and analog input range from GND to VCC make it a strong fit for portable battery monitoring. CH0 can digitize the pack voltage through a divider while CH2 samples a thermistor divider for cell temperature; the internal track-and-hold isolates each conversion. With 8.5 mW typical dissipation it does not drain battery-operated packs, and the 3-wire serial interface frees microcontroller pins for other tasks.
Recomendado
Industrial Process Control Sensors
In industrial process control the ADC08832IMM digitizes 4-20 mA current-loop signals via a shunt resistor, mapping the loop current into the GND-to-VCC input range. The 2-channel MUX lets a single ADC handle two redundant sensors for fault detection or one sensor plus a calibration reference. Its -40 C to +85 C operating range and TTL/CMOS-compatible serial interface suit PLC backplanes and remote I/O modules where industrial robustness and pin count matter.
Recomendado
Digital Panel Meters
Digital panel meters benefit from the ADC08832IMM's 8-bit resolution and small VSSOP-8 footprint. One channel measures the displayed voltage or current while the second channel reads a reference for auto-calibration. The serial DOUT interface directly drives LCD or LED drivers without parallel bus overhead, keeping PCB area small enough for handheld DMMs and bench instrument retrofits.
Recomendado
Embedded Sensor Signal Digitization
Microcontroller-based sensor designs pair well with the ADC08832IMM's 3-wire serial interface, which requires only three GPIOs (CS, CLK, DOUT) to read two analog channels. With 8-bit accuracy and 4 us conversion time it can digitize temperature, light, or pressure sensor outputs at hundreds of samples per second. The wide 4.5 V to 6.3 V supply range accommodates 5 V industrial rails and battery stacks up to 6 V.
Recomendado
Automotive Interior Sensor Hubs
Although not AEC-Q100 qualified, the ADC08832IMM is widely used in body-electronics and interior sensor hubs where its two channels read cabin temperature and illumination level sensors. The VSSOP-8 package fits tight PCB layouts and the serial interface keeps wiring simple to body controllers. Designers targeting AEC-Q100 should migrate to qualified TI parts such as ADS62P family members.
Recomendado
Medical Monitoring Equipment
Low-power medical monitoring designs such as handheld pulse oximeters, glucose meters, and portable ECG front ends can leverage the ADC08832IMM to digitize analog front-end outputs. Its 8-bit resolution is sufficient for indicator-style displays and the 3-wire interface minimizes MCU pin usage. Two channels allow simultaneous readout of primary and reference signals; medical designs should still implement IEC 60601 isolation barriers externally.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADC08832IMM — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ADC08831IMM/NOPB | ADC08832IMM/NOPB | ADC08832IWM/NOPB | ADC08831IMX | AD7992BRMZ-1 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Package | 8-VSSOP (DGK) | 8-VSSOP (DGK) - same | 8-VSSOP (DGK) - same | 8-VSSOP (DGK) - same | 8-VSSOP (DGK) - same | 8-MSOP - same footprint family |
| Resolution | 8 bits | 8 bits | 8 bits | 8 bits | 8 bits | 12 bits (+50%) |
| Input Channels | 2 (multiplexed) | 1 (single-channel) | 2 (multiplexed) | 2 (multiplexed) | 1 (single-channel) | 2 (multiplexed) |
| Supply Voltage | 4.5 V to 6.3 V | 4.5 V to 6.3 V | 4.5 V to 6.3 V | 4.5 V to 6.3 V | 4.5 V to 6.3 V | 2.7 V to 5.5 V |
| Data Interface | 3-Wire Serial (SPI-like) | 3-Wire Serial | 3-Wire Serial | 3-Wire Serial | 3-Wire Serial | I2C |
| RoHS Compliance | Compliant (NOPB variant) | Compliant (/NOPB) | Compliant | Compliant (/NOPB) | Compliant | Compliant |
| Unit Price (qty 1) | $2.18 | $2.05 | $2.30 | $2.55 | $2.00 | $3.95 |
Diferenciadores clave
- Internal 2-channel multiplexer in compact VSSOP-8 (frente a ADC08831IMM/NOPB)
- Higher resolution in same 8-pin MSOP footprint (frente a AD7992BRMZ-1)
- Drop-in pin compatibility with legacy ADC0831/2 designs (frente a ADC0831CCWM)
Notas de diseño
Place a 0.1 uF ceramic bypass capacitor as close as possible to the VCC pin (pin 1) to filter high-frequency noise that can otherwise couple into the analog sampling window. For long VCC traces, add a 10 uF bulk capacitor at the regulator output. Keep analog input traces short and routed away from the CLK and DOUT digital lines to minimize digital-to-analog crosstalk on the ADC08832IMM.
Run CLK at or below the 2 MHz maximum recommended in the datasheet to guarantee 4 us conversion time. Series-terminate CLK with a 33-100 ohm resistor near the source if the trace exceeds 5 cm to suppress reflections. Account for tDO and tDOH timing margins from the datasheet when selecting an MCU CLK phase and GPIO drive strength to avoid data corruption on the DOUT line.
Do not drive any analog input above VCC or below GND - the datasheet does not specify input protection - clamp with Schottky diodes if overshoot is possible. When switching between CH0 and CH1, allow at least one full conversion cycle for the internal track-and-hold to settle before clocking out results. Verify CS toggle timing: CS must go high to reset the conversion state machine between cycles per the TI datasheet.
The ADC08832IMM dissipates approximately 8.5 mW typical and 50 mW maximum - thermal management is not a concern in 8-VSSOP. However, note that sustained operation at maximum VCC (6.3 V) and maximum clock rate can elevate die temperature; in sealed enclosures derate VCC to 5.5 V or CLK to 1.5 MHz to keep self-heating within the -40 C to +85 C operating envelope.
Información de cumplimiento
RoHS compliance applies to the /NOPB variant per TI product page. Base ADC08832IMM may carry non-RoHS finish - confirm ordering code with distributor. AEC-Q100 qualification not stated in datasheet; choose qualified TI ADS62P parts for automotive.
