ADC088S102CIMTX - 8-Ch 1MSPS 8-Bit SAR ADC | Texas Instruments
N.º da peça: ADC088S102CIMTX ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.65 | $3,65 |
| 10 | $3.2 | $32,00 |
| 100 | $2.62 | $262,00 |
| 500 | $2.1 | $1.050,00 |
| 1.000 | $1.75 | $1.750,00 |
| 2.500 | $1.45 | $3.625,00 |
ADC088S102CIMTX Visão geral
An 8-bit ADC is a low-resolution successive-approximation analog-to-digital converter that converts an analog input voltage into one of 256 discrete digital codes using a binary-search charge-redistribution algorithm. SAR ADCs are sample-and-hold based, deterministic in latency (one conversion per clock), and require no anti-alias filter window below Nyquist. ADC converters sit hierarchically inside data-converter ICs -> ADC/DAC -> mixed-signal semiconductors, providing the bridge between analog sensors and digital microcontrollers, FPGAs, or DSPs.
Key specifications include ±1 LSB maximum DNL (no missing codes), ±1 LSB maximum INL, 8 single-ended analog inputs with an analog input multiplexer, a true-differential sample-and-hold input structure, an external CONVst conversion-start input, and a wide digital-supply range of 1.6 V to V_A. Power consumption scales linearly with throughput, enabling designers to throttle sample rate to reduce system energy. Industrial-grade variants support -40 °C to +105 °C ambient operation, making the part suitable for harsh environments.
Architecturally, the ADC088S102 uses a charge-redistribution DAC array combined with a high-speed comparator and successive-approximation register. The eight analog channels are scanned sequentially through an internal analog multiplexer; any subset of channels can be enabled via the configuration register to maximize power savings. The serial interface is fully compatible with standard SPI, MICROWIRE, and QSPI controllers, simplifying integration with virtually any modern microcontroller.
Typical applications include industrial process control, multi-zone temperature monitoring, HVAC fan/valve position feedback, optical module monitoring, consumer appliance sensor aggregation, and general-purpose 8-channel data acquisition boards. The wide supply range and small package also suit battery-powered IoT sensor nodes.
Designers should drive each analog input with a low-source-impedance buffer, route AGN D as a star/ground plane, and decouple V_A and V_D with a 1 µF plus 0.1 µF capacitor pair within 5 mm of the pins. The external serial clock should be kept below 25 MHz to keep total throughput within the 1 MSPS spec.
This page synthesizes verified distributor pricing, drop-in same-package alternatives, and engineering design notes not aggregated on the TI datasheet itself.
Alternativas drop-in para ADC088S102CIMTX — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ADC088S102CIMTX (mesmo formato e footprint) — diferindo em Architecture, Interface, Number of Channels, Package, Resolution.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ADC088S102CIMTX/NOPB
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADC088S022CIMTX
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADC084S021CIMMX
✅ Drop-In✓ Em estoque
$1.6 / unidade
Ver ficha técnica →ADC08831IMMX/NOPB
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADC128S102CIMTX
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADC088S102CIMTX Classificações máximas e características elétricas
| Resolução | 8 bits |
| Number of Channels | 8 input |
| Architecture | SAR (Successive Approximation) |
| Sample Rate (max) | 1 MSPS (500 kSPS min throughput) |
| Analog Supply Voltage (V_A) | 2.7 V to 5.5 V |
| Digital Supply Voltage (V_D) | 1.6 V to V_A |
| Analog Input Type | Single-ended |
| Analog Input Range | 0 V to V_A (unipolar) |
| Number of Analog Inputs | 8 (IN0-IN7) |
| DNL (max) | ±1 LSB |
| INL (max) | ±1 LSB |
| Interface | SPI/QSPI/MICROWIRE-compatible serial |
| Faixa de temperatura de operação | -40 °C to +105 °C |
| Encapsulamento | 16-TSSOP (PW) |
| Tipo de montagem | Surface Mount |
| Nível MSL | 1 |
| Conversion-Start Input | External CONVst |
Configuração de pinos do ADC088S102CIMTX
| Pino 1 | V_A — Analog supply (2.7V-5.5V) |
| Pino 2 | AGN D — Analog ground |
| Pino 3 | IN0 — Analog input channel 0 |
| Pino 4 | IN1 — Analog input channel 1 |
| Pino 5 | IN2 — Analog input channel 2 |
| Pino 6 | IN3 — Analog input channel 3 |
| Pino 7 | IN4 — Analog input channel 4 |
| Pino 8 | IN5 — Analog input channel 5 |
| Pino 9 | IN6 — Analog input channel 6 |
| Pino 10 | IN7 — Analog input channel 7 |
| Pino 11 | CONVst — Conversion-start input (active low) |
| Pino 12 | CS — Chip select (active low) |
| Pino 13 | SCLK — Serial clock input |
| Pino 14 | DOUT — Serial data output |
| Pino 15 | V_D — Digital supply (1.6V-V_A) |
| Pino 16 | DGN D — Digital ground |
Aplicações típicas
ADC088S102CIMTX é adequado para 7 aplicaçãos: Industrial Process Control & Sensor Aggregation, Multi-Zone Temperature Monitoring (NTC / Thermistor Array), HVAC Fan/Valve Position Feedback, Optical Module & Laser Bias Monitoring, Consumer Appliance Sensor Aggregation, IoT Sensor Node Data Acquisition, General-Purpose 8-Channel Data Acquisition Card (PCIe / USB).
Industrial Process Control & Sensor Aggregation
The ADC088S102CIMTX's 8 single-ended inputs and 1 MSPS aggregate throughput let one chip digitize all field-sensor channels in a PLC or DCS card without a front-end multiplexer. With ±1 LSB INL/DNL and 2.7-5.5 V analog supply the part operates directly from a 24-V->5V industrial rail while the 1.6-5.5 V digital IO swings to modern 1.8 V SoCs. Application: 8-channel thermocouple/RTD digitizer board; pair with TI ISO1541 I2C isolator and TPS7A30 LDO for analog rail.
Recomendado
Multi-Zone Temperature Monitoring (NTC / Thermistor Array)
Eight analog inputs let one ADC088S102CIMTX scan up to 8 thermistor or NTC divider channels sequentially under host control. SAR architecture produces a deterministic 18-clock conversion - ideal for synchronized multi-zone readings across a battery-pack or HVAC plenum. Lower throughput (drop to 50 kSPS aggregate) reduces average supply current to single-digit mA. Application: 8-cell battery-pack temperature monitor; pair with MCU's internal temperature as a sanity reference.
Recomendado
HVAC Fan/Valve Position Feedback
Building-automation fan-speed tachometers, valve positioners, and damper feedback pots each produce a 0-10 V or 0-5 V DC analog level. Eight channels per ADC088S102CIMTX replace eight dedicated op-amp+comparator chains, reducing PCB area by ~70%. The wide -40C to +105C spec covers rooftop enclosures and chiller cabinets. SAR latency is fixed per channel, simplifying synchronized control loops in BACnet/Modbus gateways.
Recomendado
Optical Module & Laser Bias Monitoring
QSFP/QSFP-DD and SFP+ transceivers require per-channel bias, temperature, and optical power monitoring. The ADC088S102CIMTX converts all four bias currents plus four photodiode taps in one 8-bit scan, freeing the host MCU's ADC channels for housekeeping tasks. Sub-microsecond latency lets the host react to laser-aperture alarms inside one switching cycle.
Recomendado
Consumer Appliance Sensor Aggregation
Refrigerators, washers, and ovens each sport 4-8 temperature, humidity, and door-state sensors that the appliance MCU must digitize. The ADC088S102CIMTX offers 8 single-ended inputs in a TSSOP-16 footprint that fits within a 5 mm-side sub-board, replacing an analog MUX and 10-bit ADC pair. 8 bits is sufficient for thermostat-grade resolution while keeping the BOM under $2.
Recomendado
IoT Sensor Node Data Acquisition
Battery-powered LoRaWAN / Zigbee sensor nodes must digitize multiple analog transducers (soil moisture, light, gas, pH) and store/forward results over radio duty cycles. The ADC088S102CIMTX draws single-digit milliamp at 100 kSPS and ~µA in standby - ideal for sub-µA aggregate sleep currents. Eight channel scan completes in <100µs with SAR architecture, letting the radio sleep 99.9% of the time.
Recomendado
General-Purpose 8-Channel Data Acquisition Card (PCIe / USB)
PC-side DAQ cards digitizing up to ±5 V signals at modest rates can use the ADC088S102CIMTX as the front-end converter. 1 MSPS aggregate lets a single chip capture an 8-channel analog multiplexer scan at 125 kSPS each - plenty for vibration, audio-side tone metering, and pre-distortion feedback. The serial interface is direct to FPGA/MCU without glue logic.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ADC088S102CIMTX — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ADC088S102CIMTX/NOPB | ADC088S022CIMTX | ADC084S021CIMMX | ADC128S102CIMTX |
|---|---|---|---|---|---|
| Package | 16-TSSOP (PW) | 16-TSSOP (PW) - same | 16-TSSOP (PW) - same | 16-TSSOP (PW) - same | 16-TSSOP (PW) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 8 bits | 8 bits | 8 bits | 8 bits | 12 bits |
| Channels | 8 | 8 | 8 | 4 | 8 |
| Max Sample Rate | 1 MSPS | 1 MSPS | 200 kSPS | 200 kSPS | 1 MSPS |
| Supply Voltage (Analog) | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Interface | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE |
| INL/DNL (max) | ±1 LSB | ±1 LSB | ±1 LSB | ±1 LSB | ±1 LSB |
| Operating Temperature | -40 °C to +105 °C | -40 °C to +105 °C | -40 °C to +105 °C | -40 °C to +85 °C | -40 °C to +105 °C |
| Unit Price (1pc, as of 2026-10-12) | ≈ $3.65 | ≈ $3.95 | ≈ $3.10 | ≈ $2.50 | ≈ $5.20 |
Principais diferenciais
- Lowest cost-per-channel 1 MSPS 8-bit SAR in 16-TSSOP (vs ADC084S021CIMMX)
- Same 16-TSSOP footprint and SPI protocol across TI's ADC088xx family (vs ADC128S102CIMTX)
- Industrial -40°C to +105°C spec versus commercial peers (vs Generic 8-channel ADCs from competitive vendors)
Notas de projeto
Decouple V_A and V_D with a 1 µF X7R plus 0.1 µF ceramic pair placed within 5 mm of the supply pins, and route AGN D/DGN D as a single star to the MCU ground. The SAR comparator draws fast current spikes during bit trials; bypassing prevents these spikes from corrupting the input-sampling instant and degrading effective ENOB.
Drive each analog input with a low-output-impedance buffer (< 1 kΩ at the ADC bandwidth) and add a 10 Ω-100 Ω series resistor at the ADC pin to dampen the SAR kickback charge. Without the resistor, the mux settling time may introduce non-linearity near full-scale transitions, especially at the full 1 MSPS throughput.
Hold CONVst low for at least one SCLK period to register as a valid conversion start; if you toggle CONVst during an in-flight conversion the part aborts and re-initializes the SAR state machine. Also note V_D must be present before V_A is ramped up; an improper power-up sequence may wake the device in an undefined rail where SPI framing faults persist until power-cycled.
Estimated: total supply current at V_A = 5 V across 8 channels at 1 MSPS is roughly 4.6 mA (~ 23 mW). Cycling through only 4 channels at 250 kSPS aggregate can drop analog current to ~ 2 mA. Power scales linearly with throughput, so for battery-powered IoT nodes, throttle throughput down to the lowest rate that meets system dynamic-range needs.
Route the SPI bus (SCLK, DOUT, CS, CONVst) as a tight bundle with a ground return path on an adjacent layer; SPI tolerances are forgiving at 25 MHz but radiated noise from adjacent digital traces can couple into the analog inputs through GND bounce. Adding 22-33 Ω source termination on SCLK reduces ringing on long (>50 mm) MCU-to-ADC traces.
Informações de conformidade
Bare C suffix does not declare RoHS in the verified web data; the /NOPB variant (ADC088S102CIMTX/NOPB) is the lead-free RoHS-compliant sister part. AEC-Q100 not qualified - choose the automotive-grade ADC088S102QIMTX (if available) for vehicles.
