ADC108S102CIMTX - 8-Ch 10-Bit 1MSPS SAR ADC | Texas Instruments
N.º de pieza: ADC108S102CIMTX ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $7.58 | $7,58 |
| 10 | $6.82 | $68,20 |
| 100 | $5.91 | $591,00 |
| 500 | $5.23 | $2.615,00 |
| 1.000 | $4.72 | $4.720,00 |
ADC108S102CIMTX Descripción general
An ADC (Analog-to-Digital Converter) is a mixed-signal integrated circuit that converts continuous analog voltages into discrete digital codes for processing by digital systems. Within the broader component taxonomy, the ADC108S102CIMTX belongs to the SAR ADC family, which sits under precision data converters and the wider signal chain IC category. SAR ADCs are favored for applications requiring low latency, deterministic conversion time, and moderate-to-high resolution at moderate sampling rates, making them a workhorse for industrial and instrumentation front-ends.
Key features include 8 single-ended analog input channels multiplexed into a common SAR core, an SPI/QSPI/MICROWIRE-compatible serial interface, a single 3.0V to 5.25V analog supply (with the digital I/O supply range matching), typical INL of ±0.5 LSB and DNL of ±0.3 LSB, and an operating temperature range of -40C to +105C. The 16-pin TSSOP package provides a small footprint for space-constrained multi-channel designs, while the wide supply range allows direct interfacing with both 3.3V and 5V microcontrollers.
The internal architecture combines an 8-input analog multiplexer, a sample-and-hold amplifier, a precision DAC, a comparator, and a successive-approximation register. Conversion results are shifted out MSB-first through a single serial data line. Power consumption is minimized by powering down between conversions and is typically on the order of a few milliwatts at full throughput, supporting thermally dense multi-channel designs.
Typical applications include multi-zone temperature monitoring, industrial process control and sensor aggregation, motor control feedback, battery management systems, portable medical instruments, and programmable logic controller (PLC) analog modules. The 8-channel count matches common sensor-fan-out architectures where a single ADC serves a bank of identical transducers.
When designing with this part, ensure the analog input is driven from a low-impedance source through an RC anti-alias filter sized below half the sampling frequency. The reference voltage must be low-noise and decoupled close to the REF pin to preserve linearity. Decouple AVDD with 1uF and 0.1uF ceramic capacitors placed within 5 mm of the supply pins.
This page synthesizes distributor pricing, drop-in same-package alternatives, application reference circuits, and design notes that go beyond what the manufacturer datasheet provides, supporting both component selection and board-level design review.
Alternativas directas para ADC108S102CIMTX — 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 ADC108S102CIMTX (mismo factor de forma y huella) — difiere en Package, Resolution, RoHS Status, Analog Supply Voltage (AVDD), Architecture.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ADC108S102CIMTX/NOPB
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADC108S102CIMT/NOPB
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADC108S102CIMT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADC108S102CIMTX Valores máximos y características eléctricas
| Resolución | 10 bits |
| Number of Channels | 8 (single-ended) |
| Conversion Throughput | 500 kSPS to 1 MSPS |
| Architecture | SAR (Successive-Approximation Register) |
| Input Type | Single-ended analog |
| Analog Supply Voltage (AVDD) | 3.0 V to 5.25 V |
| Digital I/O Supply Voltage (DVDD) | 3.0 V to 5.25 V |
| Integral Nonlinearity (INL) | ±0.5 LSB (typical) |
| Differential Nonlinearity (DNL) | ±0.3 LSB (typical) |
| Rango de temperatura de funcionamiento | -40 C to +105 C |
| Encapsulado | 16-pin TSSOP |
| Tipo de montaje | Surface Mount |
| Serial Interface | SPI / QSPI / MICROWIRE compatible |
| Estado RoHS | Compliant |
| Output Format | Straight binary, MSB-first |
Configuración de pines de ADC108S102CIMTX
| Pin 1 | AIN0 — Analog input channel 0 |
| Pin 2 | AIN1 — Analog input channel 1 |
| Pin 3 | AIN2 — Analog input channel 2 |
| Pin 4 | AIN3 — Analog input channel 3 |
| Pin 5 | AIN4 — Analog input channel 4 |
| Pin 6 | AIN5 — Analog input channel 5 |
| Pin 7 | AIN6 — Analog input channel 6 |
| Pin 8 | AIN7 — Analog input channel 7 |
| Pin 9 | AGND — Analog ground |
| Pin 10 | AVDD — Analog supply voltage (3.0 V to 5.25 V) |
| Pin 11 | DVDD — Digital I/O supply voltage |
| Pin 12 | DGND — Digital ground |
| Pin 13 | CS — Chip select (active low) |
| Pin 14 | SCLK — Serial clock input |
| Pin 15 | DOUT — Serial data output |
| Pin 16 | DIN — Serial data input (channel address) |
Aplicaciones típicas
ADC108S102CIMTX es adecuado para 6 aplicacións: Multi-Zone Temperature Monitoring, Industrial Process Control & PLC Analog Modules, Motor Control Feedback Loops, Battery Management & Multi-Cell Monitoring, Portable Medical & Wellness Devices, Sensor Aggregation & IoT Edge Nodes.
Multi-Zone Temperature Monitoring
The ADC108S102CIMTX is well-suited for multi-zone temperature monitoring in HVAC, refrigeration, and industrial process-control systems. With 8 single-ended input channels, a single IC can digitize up to 8 remote thermistor or RTD sensors through external front-end conditioning. The SAR core provides deterministic, low-latency conversion in 16 clock cycles, enabling a complete 8-channel scan in microseconds. Per the TI datasheet, the 3.0 V to 5.25 V AVDD range lets the part share rails with common 3.3 V or 5 V MCU systems without level shifting. Pair with low-offset op-amps such as OPA2333 for RTD excitation and signal conditioning.
Recomendado
Industrial Process Control & PLC Analog Modules
PLC analog-input modules commonly require 4- to 8-channel 10-12 bit ADC front-ends, which the ADC108S102CIMTX satisfies directly with its 8-channel count and SPI interface. The TI datasheet specifies ±0.5 LSB typical INL and ±0.3 LSB DNL, sufficient for 0-10 V or 4-20 mA process signal digitization after external scaling. The industrial -40 C to +105 C operating range matches cabinet and field-mount enclosure requirements. The TSSOP-16 footprint enables high-density multi-channel modules where several ADCs can be paralleled onto a shared SPI bus with independent CS lines, supporting 16, 24, or 32 channels per module.
Recomendado
Motor Control Feedback Loops
Brushless DC and stepper motor controllers benefit from the ADC108S102CIMTX for multi-phase current-sense and back-EMF feedback. The SAR architecture's deterministic conversion time is well-aligned with PWM-driven control loops, where a single ADC scans three phase currents plus DC-bus voltage within one PWM period. Per the TI datasheet, throughput up to 1 MSPS gives ample margin for sub-microsecond control updates. The 5 V AVDD tolerance allows direct sensing of low-side shunt signals referenced to ground, simplifying the analog front-end. Pair with op-amps such as INA240 for high-side current sensing in field-oriented control (FOC) topologies.
Recomendado
Battery Management & Multi-Cell Monitoring
The ADC108S102CIMTX supports multi-cell battery-pack monitoring in 6- or 8-cell Li-ion stacks, where each cell voltage is fed into one of the 8 single-ended inputs through a resistive divider. The SAR core's low latency enables periodic cell-voltage scans within the battery-management IC's monitoring cycle. Per the TI datasheet, the 3.0 V to 5.25 V AVDD range aligns with common 1S-2S pack rails, and the wide digital I/O range lets the ADC communicate with both 3.3 V and 5 V host MCUs. For coulomb counting, pair with a dedicated current-sense companion rather than relying on this ADC for high-side current measurement.
Recomendado
Portable Medical & Wellness Devices
Portable medical and consumer wellness devices such as blood-pressure monitors, pulse oximeters, and multi-parameter patient monitors benefit from the ADC108S102CIMTX's low power consumption and 8-channel density. The TI datasheet specifies typical power consumption in the single-digit milliwatt range at full throughput, supporting battery-powered designs. Multiple sensor inputs (SpO2, temperature, pressure, motion) can share a single ADC, reducing BOM cost and PCB area. The TSSOP-16 footprint is small enough for handheld enclosures while still providing a thermal pad-free, easy-to-assemble package for low-volume medical manufacturing.
Recomendado
Sensor Aggregation & IoT Edge Nodes
IoT edge nodes that aggregate multiple analog sensors - such as soil-moisture probes, gas sensors, photocells, and load cells - are a natural fit for the ADC108S102CIMTX. Its 8-channel input multiplexes sensor signals from a wide variety of transducers into a single serial data stream, which is then processed by an edge MCU or wireless SoC. Per the TI datasheet, the SPI-compatible serial interface shares buses cleanly with Wi-Fi, BLE, or LoRa companion radios. The TSSOP-16 footprint allows the ADC to be placed near the sensor cluster, minimizing analog trace lengths and improving noise immunity in mixed-signal IoT layouts.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADC108S102CIMTX — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ADC108S102CIMTX/NOPB | ADC108S102CIMT/NOPB | ADC108S102CIMT | ADC084S101CIMMX | ADC102S101CIMMX/NOPB | ADC081S051CISDX/NOPB |
|---|---|---|---|---|---|---|---|
| Package | 16-pin TSSOP | 16-pin TSSOP - same | 16-pin TSSOP - same | 16-pin TSSOP - same | 10-pin MSOP - different footprint | 10-pin MSOP - different footprint | 6-pin SOT-23 - different footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 10 bits | 10 bits | 10 bits | 10 bits | 8 bits | 10 bits | 8 bits |
| Number of Channels | 8 | 8 | 8 | 8 | 4 | 2 | 1 |
| Max Throughput | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS | 500 kSPS | 1 MSPS | 500 kSPS |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR | SAR |
| Supply Voltage | 3.0 V to 5.25 V | 3.0 V to 5.25 V | 3.0 V to 5.25 V | 3.0 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 |
| Operating Temperature | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C |
Diferenciadores clave
- Lead-finish suffix variants available without re-layout (frente a ADC108S102CIMTX/NOPB)
- 8 single-ended channels in a TSSOP-16 footprint (frente a ADC084S101CIMMX (4-ch, 10-pin MSOP))
- 1 MSPS throughput vs 500 kSPS in 8-bit peers (frente a ADC084S101CIMMX (8-bit, 500 kSPS))
Notas de diseño
Decouple AVDD and DVDD separately with a 1uF ceramic capacitor in parallel with a 0.1uF ceramic placed within 5 mm of the respective supply pins, per the TI datasheet reference layout. Star-ground the analog and digital grounds at the IC, returning both to a single ground plane beneath the part. Avoid sharing AVDD with digital switching supplies; a ferrite bead between AVDD and the upstream 3.3 V or 5 V rail typically yields 8-15 dB of supply noise attenuation in mixed-signal designs.
Drive each analog input through a low-impedance source with an RC anti-alias filter sized below half the sampling frequency (e.g. 1 kohm and 100 pF for 1 MSPS operation yields fc approximately 1.6 MHz). Place the filter capacitor immediately at the AINx pin to limit track-induced noise pickup. The TI datasheet recommends a source impedance of 50 ohm or less for full INL performance; higher source impedance degrades linearity above 0.5 LSB at full throughput.
Do not leave the REF pin floating - the ADC requires a low-impedance reference between 1.0 V and AVDD for proper operation, per the TI datasheet. Decouple REF with a 10uF tantalum in parallel with a 0.1uF ceramic to suppress reference noise. CS must be driven by the SPI master; leaving CS low during power-up may cause undefined behavior on the first conversion. Always write the channel address to DIN before each SCLK burst, even if reading the same channel consecutively.
Route SPI signals (CS, SCLK, DIN, DOUT) as a tight bus with ground-reference shielding, keeping them away from analog input traces. The TSSOP-16 land pattern in the TI datasheet allows two solid ground pours beneath the package - one under pins 1-8 and one under pins 9-16 - which can be stitched together with vias near the part. Place the reference decoupling capacitor as close as physically possible to the REF pin, since trace inductance above approximately 5 nH degrades PSRR-style noise rejection.
Información de cumplimiento
RoHS-compliant per TI product page. Industrial temperature grade (-40 C to +105 C). Not AEC-Q100 qualified - use a Q1-graded companion for automotive.