ADC102S101CIMM - 10-Bit 2-Ch 1Msps SAR ADC | Texas Instruments
N.º da peça: ADC102S101CIMM ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.58 | $25,80 |
| 100 | $2.21 | $221,00 |
| 500 | $1.86 | $930,00 |
| 1.000 | $1.55 | $1.550,00 |
ADC102S101CIMM Visão geral
An ADC (analog-to-digital converter) is an integrated circuit that converts continuous analog voltages into discrete digital codes; SAR ADCs in particular use a binary-search algorithm against an internal DAC to resolve N bits in N clock cycles, combining low latency, deterministic conversion time, and excellent DC accuracy with no pipeline delay. Within the broader taxonomy, the ADC102S101 belongs to the precision-data-converter hierarchy: SAR ADC -> data converter -> signal-chain IC -> analog/mixed-signal semiconductor, sitting between slower integrating ADCs and higher-speed pipeline ADCs.
Key specifications include 10-bit resolution, 2 single-ended analog input channels with an internal multiplexer, 1 Msps maximum sampling rate (fully specified down to 500 ksps), straight-binary serial data output, and an internal track-and-hold circuit. The wide 2.7 V-to-5.25 V supply range allows direct interface to 3.3 V or 5 V microcontrollers without level shifters, and the SPI-/QSPI-/MICROWIRE-compatible serial output drops straight into most modern MCUs and DSPs.
The SAR architecture provides deterministic latency, low power consumption, and strong DC linearity, with an internal bandgap reference and oscillator on-chip. The 8-pin VSSOP footprint suits high-density PCB layouts, and the CMOS process enables low standby current for battery-powered or sleep-mode applications.
Typical applications include portable instrumentation, industrial process control, sensor signal conditioning, factory-automation modules, and battery-powered data loggers. The wide supply range and low 3.9 mW at 3 V power budget make it especially attractive for handheld measurement devices. Designers should add a 0.1 microfarad bypass capacitor close to the supply pin and ensure the analog input stays within the common-mode range; the SPI clock should not exceed 10 MHz (max) to preserve conversion accuracy at full 1 Msps.
Alternativas drop-in para ADC102S101CIMM — 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 ADC102S101CIMM (mesmo formato e footprint) — diferindo em Package, Digital Interface, Number of Input Channels, Resolution, RoHS Status.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ADC102S101CIMM/NOPB
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADC102S101CIMMX
✅ Drop-In✓ Em estoque
$2.38 / unidade
Ver ficha técnica →ADC102S101CIMMX/NOPB
✅ Drop-In✓ Em estoque
$2.1 / unidade
Ver ficha técnica →ADC102S051CIMM
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$1.52 / unidade
Ver ficha técnica →ADC101S021CISDX
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$1.32 / unidade
Ver ficha técnica →ADC101S021CIMFX
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$1.4 / unidade
Ver ficha técnica →ADC084S101CIMMX
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$1.62 / unidade
Ver ficha técnica →ADC102S101CIMM Classificações máximas e características elétricas
| Resolução | 10 bits |
| Number of Input Channels | 2 (single-ended, multiplexed) |
| Architecture | SAR (Successive Approximation Register) |
| Sample Rate Range | 500 ksps to 1 Msps |
| Tensão de alimentação | 2.7 V to 5.25 V (single supply) |
| Power Consumption at 3 V | 3.9 mW (typical) |
| Power Consumption at 5 V | 11.4 mW (typical) |
| Digital Interface | SPI / QSPI / MICROWIRE-compatible serial |
| Output Format | Straight binary |
| Input Type | Single-ended analog |
| Internal Reference | Yes (on-chip) |
| Internal Track-and-Hold | Yes |
| Temperatura de operação | -40 °C to +85 °C |
| Encapsulamento | 8-pin VSSOP (MSOP) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant (NOPB suffix) |
Configuração de pinos do ADC102S101CIMM
| Pino 1 | VDD — Power supply input (2.7 V to 5.25 V) |
| Pino 2 | GND — Ground |
| Pino 3 | AIN1 — Analog input channel 1 (single-ended) |
| Pino 4 | AIN2 — Analog input channel 2 (single-ended) |
| Pino 5 | REF — Voltage reference input (external) |
| Pino 6 | CS-bar — Chip-select (active low) |
| Pino 7 | SCLK — Serial clock input |
| Pino 8 | SDO — Serial data output |
Aplicações típicas
ADC102S101CIMM é adequado para 6 aplicaçãos: Portable Instrumentation and Handheld Meters, Industrial Process Control and Sensor Acquisition, Factory Automation Modules and PLCs, Battery-Powered Sensor Data Loggers, Automotive Body Electronics and HMI, Test and Measurement Front-Ends.
Portable Instrumentation and Handheld Meters
The ADC102S101CIMM's 3.9 mW typical power at 3 V supply and 1 Msps sample rate make it ideal for portable instrumentation. The wide 2.7 V to 5.25 V supply accepts a direct Li-ion or 3.3 V regulator rail, while the 8-VSSOP footprint keeps the analog front-end small enough for handheld enclosures. The dual-channel mux allows simultaneous digitisation of two sensor inputs (e.g. voltage and current) without an external analog switch. Designers typically pair the ADC102S101 with an MSP430 or Tiva-C MCU and use the SPI port to stream straight-binary samples at up to 10 MHz SCLK. Power-down current drops to microamps between conversions, extending battery life on intermittent sampling workloads.
Recomendado
Industrial Process Control and Sensor Acquisition
In industrial process control modules, the ADC102S101CIMM digitises two 4-20 mA or thermocouple-derived voltage signals at up to 1 Msps aggregate. The SAR architecture provides deterministic latency, which is critical when the ADC sits inside a closed-loop control loop. The -40 °C to +85 °C industrial temperature grade tolerates unheated cabinets, and the SPI-/QSPI-/MICROWIRE-compatible serial interface drops straight onto most industrial MCU buses. The wide 2.7 V to 5.25 V supply tolerates 24 V-to-5 V step-down rails with substantial margin. Designers should add an RC anti-alias filter ahead of each input and a 0.1 µF bypass cap adjacent to the VDD pin for noise immunity in electrically noisy plant environments.
Recomendado
Factory Automation Modules and PLCs
Factory automation I/O modules and PLC analog input cards benefit from the ADC102S101CIMM's small 8-VSSOP package and dual-channel mux, allowing two analog points per chip in high-channel-count systems. The 10-bit resolution suits general-purpose voltage and current monitoring where cost-per-channel dominates over absolute precision, while the 1 Msps sample rate oversamples slowly varying process signals to improve effective resolution through averaging. The CMOS serial interface and 2.7 V to 5.25 V supply rail accept standard 3.3 V or 5 V backplane voltages. The CMOS process and integrated track-and-hold reduce BOM cost by eliminating external sample-and-hold amplifiers, which simplifies the analog front-end in dense PLC designs.
Recomendado
Battery-Powered Sensor Data Loggers
Battery-powered sensor data loggers leverage the ADC102S101CIMM's 3.9 mW (3 V) typical power consumption and CMOS standby current. The integrated track-and-hold and 2-channel mux digitise two slow-varying signals (e.g. temperature and pressure) without external components, while the 1 Msps oversamples below-Nyquist to push effective resolution beyond 10 bits through averaging. The 8-VSSOP package fits miniature PCB assemblies and the 2.7 V to 5.25 V supply accepts Li-ion, 2x AA, or 3.3 V regulated rails directly. Designers typically duty-cycle the CS-bar line to put the ADC in standby between samples, reducing average current to the microampere range and extending battery life into months.
Recomendado
Automotive Body Electronics and HMI
In non-safety automotive body electronics (HVAC controls, seat-position sensors, simple HMI), the ADC102S101CIMM digitises two resistive or voltage-mode sensor inputs at up to 1 Msps. The -40 °C to +85 °C industrial temperature grade covers cabin environments, and the CMOS serial interface talks to any automotive MCU over SPI. The wide 2.7 V to 5.25 V supply accommodates 5 V body rails directly, and the 8-VSSOP footprint suits space-constrained behind-dash PCBs. Designers should add ESD protection on the analog inputs (e.g. TVS arrays) and a small RC filter for conducted-noise immunity. Note: this part is not AEC-Q100 qualified - for safety-critical or under-hood functions, choose an AEC-Q100 ADC such as the ADC102S101-Q1 from the same TI family.
Recomendado
Test and Measurement Front-Ends
Test and measurement bench instruments and modular dataloggers use the ADC102S101CIMM to capture two wide-bandwidth analog channels at up to 1 Msps aggregate. The SAR architecture's deterministic latency simplifies trigger timing, and the straight-binary serial output streams cleanly into an FPGA or DSP for downstream processing. The 8-VSSOP package is breadboard-friendly for prototypes, and the 2.7 V to 5.25 V supply rails accept standard benchtop ±15 V-derived 5 V or 3.3 V rails. The 10-bit resolution suits production-test go/no-go thresholds and education labs; for higher-precision instrumentation, daisy-chain the ADC102S101 with a precision 16-bit ADC like the ADS8482 on the same SPI bus with separate CS-bar lines.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ADC102S101CIMM — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ADC102S101CIMM/NOPB | ADC102S101CIMMX | ADC102S051CIMM | ADC101S021CISDX | ADC084S101CIMMX |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-VSSOP | 8-VSSOP - same | 8-VSSOP - same | 8-VSSOP - same | 8-VSSOP - same | 8-VSSOP - same |
| Resolution | 10 bits | 10 bits | 10 bits | 10 bits | 10 bits | 8 bits |
| Input Channels | 2 (single-ended) | 2 | 2 | 2 | 1 | 2 |
| Sample Rate (max) | 1 Msps | 1 Msps | 1 Msps | 500 ksps | 200 ksps | 500 ksps |
| Supply Voltage | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V |
| Power (typ at 3 V) | 3.9 mW | 3.9 mW | 3.9 mW | 1.5 mW | 1.2 mW | 2.0 mW |
| Interface | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE |
| RoHS / Lead-Free | No (SnPb finish) | Yes (NOPB suffix) | No (SnPb finish) | Yes (NOPB on datasheet) | Yes (NOPB on datasheet) | Yes (NOPB on datasheet) |
Principais diferenciais
- Fully specified across 500 ksps to 1 Msps sample-rate range (vs ADC102S051CIMM)
- Dual-channel analog input mux on-chip (vs ADC101S021CISDX)
- 10-bit resolution at 1 Msps (vs ADC084S101CIMMX)
Notas de projeto
Bypass VDD with a 0.1 µF ceramic capacitor placed within 5 mm of the ADC102S101CIMM supply pin, plus a 10 µF tantalum or polymer bulk capacitor on the same rail. According to the TI datasheet, this star-grounded decoupling prevents digital switching noise on SCLK and SDO from coupling into the analog input through the supply, which is critical when reading low-level signals near the LSB size (one LSB = VREF / 1024).
Use a single uninterrupted ground plane beneath the ADC102S101CIMM rather than a split ground; the analog input traces should be guarded with ground traces on both sides and kept short to minimise trace capacitance. Per the TI datasheet, a small RC anti-alias filter (typically 100 ohm plus 10 nF) at each AIN pin limits out-of-band noise and prevents aliasing of switching-converter ripple into the passband.
Route SCLK, SDO, and CS-bar away from analog input traces and switching power inductors; the SCLK trace in particular should be kept short and not cross any high-di/dt traces. According to the TI ADC102S101 datasheet, the SCLK frequency should not exceed 10 MHz to maintain conversion accuracy at full 1 Msps; overshooting SCLK reduces the S/H acquisition aperture and degrades AC performance.
Do not leave the REF pin floating - tie REF to a low-impedance, low-noise reference (typically VDD or a dedicated reference IC like the TL431). According to the TI datasheet, the absolute voltage on REF directly sets the input full-scale range (1 LSB = VREF / 1024), so a noisy or drifting REF will corrupt all conversions. The CS-bar pin must return high between conversions to keep the ADC powered down between samples - leaving CS-bar low continuously forces full 1 Msps operation and wastes power in battery applications.
Informações de conformidade
ADC102S101CIMM (without /NOPB) is not RoHS compliant - uses SnPb finish. Choose ADC102S101CIMM/NOPB for RoHS-compliant lead-free builds. Not AEC-Q100 qualified - choose ADC102S101-Q1 for automotive. REACH compliance status confirmed by TI product page.
