ADC108S052CIMT - 8-Channel 10-Bit 500kSPS ADC | Texas Instruments
MPN: ADC108S052CIMT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.45 | $5.45 |
| 10 | $4.91 | $49.10 |
| 100 | $4.1 | $410.00 |
| 500 | $3.45 | $1,725.00 |
| 1,000 | $2.85 | $2,850.00 |
ADC108S052CIMT Overview
A SAR ADC is a successive-approximation-register analog-to-digital converter that uses a binary search through an internal DAC to resolve each analog sample in N clock cycles, where N is the resolution in bits. SAR ADCs sit within the broader hierarchy of analog-to-digital converters (ADC -> data converter -> signal chain IC -> mixed-signal semiconductor). They are prized for their deterministic latency, lack of pipeline delay, and excellent DC accuracy for multi-channel multiplexing applications.
Key features of the ADC108S052 include eight single-ended analog inputs (IN0 through IN7), a serial SPI/QSPI/MICROWIRE-compatible digital interface, true-differential input capability when paired in pairs, and an integrated track-and-hold circuit. The device draws a low supply current of typically 1.6 mA at 3V supply and 200 kSPS, with auto-power-down between conversions to extend battery life in portable designs.
The converter architecture combines a charge-redistribution SAR core with an internal reference and sample-and-hold, achieving 10-bit resolution with no missing codes and INL of 1 LSB (max). The wide 2.7V to 5.25V analog supply range allows direct connection to 3.3V or 5V system rails without level shifting, simplifying PCB design in mixed-voltage systems.
Typical applications include multi-zone temperature monitoring systems, industrial sensor arrays (strain, pressure, flow), portable instrumentation and data loggers, optical module monitoring, and motor-control feedback sampling. The eight input channels allow one ADC to replace eight single-channel ADCs in cost- and board-space-constrained designs.
When designing with this device, ensure the analog input signal does not exceed V_A or go below GND. A 0.1uF bypass capacitor placed within 5 mm of the supply pin is recommended, and the reference decoupling must use a low-ESR ceramic capacitor. Source impedance above 1 kohm may require an input buffer for full specified accuracy.
This page synthesizes distributor pricing from DigiKey/Mouser/Octopart, drop-in same-package alternatives from the TI portfolio, and practical design notes not consolidated in the manufacturer datasheet alone.
Drop-in alternatives for ADC108S052CIMT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADC108S052CIMT (same form factor and footprint) — differing in Input Type, Package, Architecture, Operating Temperature Range, Resolution.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADC108S052CIMT/NOPB
✅ Drop-In📋 Reference alternative (not in catalog)
ADC108S052CIMTX
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →ADC128S052CIMT
✅ Drop-In✓ In Stock
$2.13 / Unit
View Datasheet →ADC128S052CIMT/NOPB
✅ Drop-In📋 Reference alternative (not in catalog)
ADC10464CIWMX/NOPB
✅ Drop-In✓ In Stock
$5.74 / Unit
View Datasheet →ADC108S052CIMT Maximum Ratings & Electrical Characteristics
| Resolution | 10 bit |
| Number of Channels | 8 |
| Architecture | SAR (Successive Approximation Register) |
| Sample Rate | 200 kSPS to 500 kSPS |
| Conversion Time | 1.625 us |
| Input Type | Single-Ended (8 channels, IN0–IN7) |
| Supply Voltage Range | 2.7 V to 5.25 V |
| Digital Interface | SPI / QSPI / MICROWIRE-compatible serial |
| Operating Temperature Range | -40 C to +105 C |
| Package | 16-pin TSSOP (PW) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
ADC108S052CIMT Pin Configuration
| Pin 1 | IN0 — Analog input channel 0 |
| Pin 2 | IN1 — Analog input channel 1 |
| Pin 3 | V_A — Analog supply voltage (2.7 V to 5.25 V) |
| Pin 4 | V_D — Digital supply voltage (tie to V_A) |
| Pin 5 | GND — Ground (analog and digital return) |
| Pin 6 | IN2 — Analog input channel 2 |
| Pin 7 | IN3 — Analog input channel 3 |
| Pin 8 | IN4 — Analog input channel 4 |
| Pin 9 | IN5 — Analog input channel 5 |
| Pin 10 | IN6 — Analog input channel 6 |
| Pin 11 | IN7 — Analog input channel 7 |
| Pin 12 | GND — Ground |
| Pin 13 | DOUT — Serial data output (SPI MISO equivalent) |
| Pin 14 | DIN — Serial data input (SPI MOSI equivalent) |
| Pin 15 | SCLK — Serial clock input |
| Pin 16 | CS — Chip select (active low) |
Typical Applications
ADC108S052CIMT is suitable for 6 applications: Multi-Zone Temperature Monitoring Systems, Industrial Sensor Array Acquisition, Portable Battery-Powered Data Loggers, Optical Module Monitoring (SFP/QSFP), Motor Control Feedback Sampling, Medical Patient Monitoring Equipment.
Multi-Zone Temperature Monitoring Systems
The ADC108S052CIMT suits multi-zone thermal monitoring because its 8 single-ended inputs accept up to 8 thermistor or RTD bridge outputs simultaneously, replacing eight discrete ADCs in cost-sensitive designs. The 10-bit resolution is sufficient for 0.25C temperature steps when paired with a 10 mV/C analog front-end, and the 500 kSPS throughput allows full 8-channel sweeps in well under 1 ms. The 2.7V to 5.25V supply range permits direct connection to either 3.3V or 5V MCU rails, eliminating level shifters. Designers should pair each input with an anti-alias RC filter (typically 1 kΩ + 100 pF) and use the auto-power-down feature to reduce quiescent draw between scans.
Recommended
Industrial Sensor Array Acquisition
In factory automation, the ADC108S052CIMT multiplexes 8 strain-gauge, pressure, or flow-sensor outputs into a single ADC, cutting BOM cost and PCB area. The SAR architecture provides deterministic latency, which is critical for synchronized control loops running on an industrial MCU. With 10-bit resolution and a typical SNR above 60 dB, the device resolves 0.1% full-scale sensor changes suitable for closed-loop process control. The wide -40C to +105C industrial temperature range matches factory floor requirements, while the SPI/QSPI/MICROWIRE interface ties cleanly to common MCUs such as MSP430 or STM32.
Recommended
Portable Battery-Powered Data Loggers
Battery-powered data loggers benefit from the ADC108S052CIMT's low supply current and auto-power-down feature, which drops the device into a low-IQ state between conversions to extend battery life. At 3 V supply and 200 kSPS, typical supply current is well under 2 mA, enabling multi-year operation on a single coin cell when scanning at 1 Hz. The 8 input channels let one ADC service multiple environmental sensors (temperature, humidity, light, voltage) simultaneously. Designers should select a low-quiescent LDO such as TPS7A4701 or a TI TPS7A02 family part to power the ADC and minimize sleep current.
Recommended
Optical Module Monitoring (SFP/QSFP)
Optical transceivers require monitoring of Tx bias current, Tx power, Rx power, and module temperature, and the ADC108S052CIMT's 8 channels conveniently accommodate all four analog signals plus auxiliary diagnostics per module. The 500 kSPS throughput allows sampling of all parameters within the typical SFP diagnostic refresh interval of 100 ms. The 16-pin TSSOP package occupies minimal PCB space, valuable in compact SFF/SFP module designs. The 2.7V to 5.25V supply range matches the 3.3V typical module rail without level shifting.
Recommended
Motor Control Feedback Sampling
BLDC and stepper motor control loops can use the ADC108S052CIMT to sample phase currents, bus voltage, and back-EMF on up to 8 channels, enabling single-chip feedback in compact driver designs. The deterministic SAR latency avoids the pipeline delay of higher-speed pipeline ADCs, which simplifies loop compensation. At 500 kSPS, the ADC can sample a full 6-phase control cycle at 80 kHz, comfortably exceeding typical 20 kHz PWM rates. Designers should pair each current-sense input with a low-offset op-amp such as OPA2333 to preserve 10-bit accuracy at low currents.
Recommended
Medical Patient Monitoring Equipment
The ADC108S052CIMT serves medical patient-monitoring devices where 10-bit resolution is sufficient for parameters like SpO2 photoplethysmography, respiration, and skin temperature, provided signals are pre-conditioned by an analog front end. The 8 channels accommodate multi-lead ECG or multi-site temperature measurement, while the 500 kSPS throughput oversamples to reduce noise. The -40 to +105 C operating range supports equipment used in ambulances, hospitals, and home-care settings. Compliance with IEC 60601-1 must be implemented at the system level, not the ADC alone.
Recommended
Recommended Products Summary
Engineering reference data for ADC108S052CIMT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADC108S052CIMT/NOPB | ADC108S052CIMTX | ADC128S052CIMT | ADC128S052CIMT/NOPB | ADC10464CIWMX/NOPB |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 16-TSSOP (PW) | 16-TSSOP (PW) - same | 16-TSSOP (PW) - same | 16-TSSOP (PW) - same | 16-TSSOP (PW) - same | 16-SOIC (WM) - different |
| Resolution | 10 bit | 10 bit | 10 bit | 12 bit | 12 bit | 10 bit |
| Number of Channels | 8 single-ended | 8 single-ended | 8 single-ended | 8 single-ended | 8 single-ended | 1 differential |
| Sample Rate | 200-500 kSPS | 200-500 kSPS | 200-500 kSPS | 200-500 kSPS | 200-500 kSPS | 500 kSPS |
| Supply Voltage Range | 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 | 4.5 V to 5.5 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 +105 C | -40 C to +85 C |
| RoHS / NOPB | RoHS (not NOPB) | NOPB (Pb-free) | RoHS | RoHS | NOPB (Pb-free) | NOPB (Pb-free) |
Key Differentiators
- 8 single-ended input channels in one 16-pin TSSOP package (vs Discrete 8x single-channel ADCs)
- Pin-compatible 12-bit upgrade path within same package (vs ADC128S052CIMT)
- Wide 2.7V to 5.25V single-supply operation (vs ADC10464CIWMX/NOPB)
Design Notes
The ADC108S052CIMT requires a clean analog supply. Place a 0.1uF ceramic decoupling capacitor within 5 mm of the V_A pin and a bulk 10uF tantalum or ceramic capacitor near the supply trace. The V_D pin must be tied directly to V_A on the PCB; separate analog and digital rails are not supported. Estimated supply current at 3V V_A and 200 kSPS is approximately 1.6 mA per the TI datasheet typical curves; verify with the actual data sheet before finalizing battery-life calculations.
Route analog input traces as short as possible and keep them away from digital switching signals (SCLK, DOUT). Use a continuous ground plane beneath the ADC with vias stitched around the perimeter to provide low-impedance return paths. The exposed thermal pad (if present on the specific variant) must be soldered to the ground plane for thermal and electrical performance. Maintain a 0.2 mm clearance between analog input traces and digital output traces to minimize digital crosstalk.
Do not let analog inputs exceed V_A or fall below GND by more than 0.3 V, as the input ESD diodes will forward-conduct and may damage the device. Do not leave unused analog inputs floating - tie them to GND or V_A to prevent spurious conversion results. Always toggle CS low before and high after the SPI transaction to avoid corrupting the conversion sequence. Source impedance above 1 kohm requires an input buffer to avoid gain error from the input sampling current. Estimated: with a 1 kohm source and 5 pF sample capacitance, 10-bit settling requires at least 5 time constants (~5 ns per RC), well within the 1.625 us acquisition window.
Compliance Information
RoHS compliant per TI product page. /NOPB suffix variant recommended for full Pb-free compliance. Not AEC-Q100 qualified (not an automotive-grade part).
