ADC104S101CIMMX - 10-Bit 4-Ch 500ksps-1Msps SAR ADC | TI
MPN: ADC104S101CIMMX ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.1 | $3.10 |
| 10 | $2.78 | $27.80 |
| 100 | $2.45 | $245.00 |
| 500 | $2.12 | $1,060.00 |
| 1,000 | $1.89 | $1,890.00 |
| 3,000 | $1.62 | $4,860.00 |
ADC104S101CIMMX Overview
What is a SAR ADC? A successive-approximation register analog-to-digital converter is a sampling ADC architecture that converts analog inputs to a digital code one bit at a time using a binary-search algorithm against an internal DAC. SAR ADCs sit in the broader taxonomy of analog-to-digital converter -> data converter -> mixed-signal IC -> semiconductor. Compared to delta-sigma (oversampling) ADCs, SAR parts deliver lower latency, deterministic throughput, and excellent AC/DC performance for multiplexed multi-channel systems running at hundreds-of-ksps to a few Msps.
Key features include 4 single-ended input channels multiplexed into a single SAR core, a SPI/QSPI/MICROWIRE-compatible serial interface, an external reference input (typically 5V for full-scale 5V input), ±1 LSB INL/DNL (typical), and CMOS-compatible digital I/O operating from a single 2.7V to 5.25V supply. Internal sequencing eliminates the need for an external sample clock, and the wide input voltage compliance lets the part directly digitize 5V signals without external dividers.
Typical applications include 4-channel data-acquisition front ends, industrial process control and sensor monitoring, portable instrumentation, battery monitoring and management, system monitoring on industrial PCs and servers, and consumer audio/video signal monitoring. The wide analog input range, small package, and SPI-compatible interface make it especially useful in cost- and space-constrained embedded systems.
When designing with this device, place the input RC filter components close to each analog input pin, keep analog and digital grounds separate, and provide a low-noise external reference for full 10-bit accuracy. For sample rates below 500 ksps the part is fully specified; operation above 1 Msps is not guaranteed.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for ADC104S101CIMMX — 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 ADC104S101CIMMX (same form factor and footprint) — differing in Package, Digital Interface, Number of Input Channels, Resolution, Input Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADC104S101CIMM/NOPB
✅ Drop-In📋 Reference alternative (not in catalog)
ADC104S101CIMM
✅ Drop-In✓ In Stock
$1.88 / Unit
View Datasheet →ADC104S021CIMM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADC084S101CIMMX
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →ADC102S101CIMMX/NOPB
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.1 / Unit
View Datasheet →ADC104S101CIMMX Maximum Ratings & Electrical Characteristics
| Resolution | 10 bits |
| Number of Input Channels | 4 single-ended |
| Conversion Architecture | SAR (Successive-Approximation Register) |
| Sample Rate Range | 500 ksps to 1 Msps |
| Analog Input Voltage Range | 0 V to 5.25 V |
| Supply Voltage (VDD) | 2.7 V to 5.25 V |
| Digital Interface | SPI/QSPI/MICROWIRE-compatible serial |
| Reference Input | External (typically 5 V) |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| Package | 10-pin VSSOP (Mini Small Outline Package) |
| Mounting Type | Surface Mount |
| Screening Level | Industrial |
| Number of Pins | 10 |
| RoHS Status | Compliant |
ADC104S101CIMMX Pin Configuration
| Pin 1 | CH0 — Analog input channel 0 |
| Pin 2 | CH1 — Analog input channel 1 |
| Pin 3 | CH2 — Analog input channel 2 |
| Pin 4 | CH3 — Analog input channel 3 |
| Pin 5 | GND — Ground |
| Pin 6 | REF — External voltage reference input |
| Pin 7 | VDD — Power supply (2.7V-5.25V) |
| Pin 8 | DOUT — Serial data output (SPI) |
| Pin 9 | SCLK — Serial clock input (SPI) |
| Pin 10 | CSn — Active-low chip select (SPI) |
Typical Applications
ADC104S101CIMMX is suitable for 6 applications: 4-Channel Industrial Data Acquisition Front End, Battery Management and Monitoring Systems, Portable Instrumentation and Handheld Meters, System Monitoring and Housekeeping ADC, Sensor Signal Conditioning and Multiplexing Hubs, Consumer Audio/Video Signal Monitoring.
4-Channel Industrial Data Acquisition Front End
The ADC104S101CIMMX digitizes up to four 0-5V sensor signals (temperature, pressure, flow, level) into a 10-bit SPI stream for a microcontroller or PLC. Its 500 ksps to 1 Msps sample rate comfortably handles multiplexed data-acquisition blocks updating all four channels every 100 microseconds. The wide 5V analog input range lets the part directly read 4-20 mA shunt resistors, thermocouple amplifiers, or 0-10V transducers through simple external dividers, while -40C to +85C industrial temperature rating suits factory-floor enclosures without derating. Practical design consideration: keep the SPI clock length short and place the reference decoupling capacitor within 5 mm of the REF pin.
Recommended
Battery Management and Monitoring Systems
In multi-cell battery monitor boards, the ADC104S101CIMMX samples cell voltages, current-sense amplifier output, and temperature sensor inputs through its four single-ended channels. SAR architecture delivers deterministic conversion latency so the BMS controller receives synchronized, latency-bounded samples for coulomb counting and protection decisions. With 0-5.25V analog input and 10-bit resolution (4.88 mV per LSB at 5V full scale), the part accommodates 1- to 4-series Li-ion stacks via simple resistive scaling. Power consumption is in the low-mW range so the part contributes negligible quiescent draw. Design note: include an RC filter per input to suppress switching-converter noise and use a dedicated low-noise reference.
Recommended
Portable Instrumentation and Handheld Meters
The ADC104S101CIMMX fits handheld multimeters, clamp meters, and portable environmental monitors where 10-bit resolution over a 0-5V range is sufficient and board area is at a premium. The 10-VSSOP package measures roughly 3 mm x 3 mm and consumes only milliwatts, enabling battery-powered operation across a full shift. The SPI-compatible serial interface connects directly to small microcontrollers (MSP430, PIC, AVR, low-end Cortex) without glue logic. Practical consideration: enter shutdown mode between conversions when on battery power to extend runtime; the part ships in -40C to +85C industrial grade suitable for field use.
Recommended
System Monitoring and Housekeeping ADC
Motherboards, base stations, and industrial PCs use the ADC104S101CIMMX as a housekeeping ADC to read supply rails, board temperature via external diode, fan tachometer, and chassis intrusion signals. Its 4 channels cover typical server-monitoring use cases and the SPI interface shares the same bus as other peripherals. SAR conversion gives deterministic latency needed for fault detection loops. The 2.7-5.25V supply range matches common 3.3V and 5V rail systems; place a dedicated 0.1 uF + 10 uF decoupling network near the VDD pin to keep digital switching noise out of the analog front end.
Recommended
Sensor Signal Conditioning and Multiplexing Hubs
The ADC104S101CIMMX is well suited to multiplexed front-ends reading multiple analog sensor types (bridge pressure sensors, RTDs, thermistors, photo-diodes). The 4-channel mux reduces part count and PCB area versus four single-channel ADCs. With 10-bit / 1 LSB typical INL/DNL, accuracy is sufficient for industrial control where ±0.1% of full-scale measurement is acceptable. Pair the ADC with low-noise op-amp buffers (e.g., OPAx family) for high-impedance sensors and provide an external precision reference (REF3040/REF5050) for maximum absolute accuracy.
Recommended
Consumer Audio/Video Signal Monitoring
Inside set-top boxes, AV receivers, and pro audio gear, the ADC104S101CIMMX can monitor level detectors and signal-presence indicators across four sources without burdening the main DAC. The 500 ksps to 1 Msps sample rate exceeds typical audio bandwidths and the SPI interface is invisible to the audio DAC signal path. Operating from the 5V supply rail already present in such devices simplifies power tree integration. Consider adding 4th-order low-pass anti-aliasing filters before each input to reject broadcast RF and switching-converter harmonics.
Recommended
Recommended Products Summary
Engineering reference data for ADC104S101CIMMX — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADC104S101CIMM/NOPB | ADC104S101CIMM | ADC104S021CIMM | ADC084S101CIMMX | ADC102S101CIMMX/NOPB |
|---|---|---|---|---|---|---|
| Package | 10-VSSOP | 10-VSSOP - same | 10-VSSOP - same | 10-VSSOP - same | 10-VSSOP - same | 10-VSSOP - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 10 bits | 10 bits | 10 bits | 10 bits | 8 bits | 12 bits |
| Sample Rate Range | 500 ksps to 1 Msps | 500 ksps to 1 Msps | 500 ksps to 1 Msps | up to 500 ksps | 500 ksps to 1 Msps | 500 ksps to 1 Msps |
| Number of Channels | 4 | 4 | 4 | 4 | 4 | 2 |
| Analog Input Range | 0V to 5.25V | 0V to 5.25V | 0V to 5.25V | 0V to 5.25V | 0V to 5.25V | 0V to 5.25V |
| Supply Voltage | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V |
| Lead-Free / RoHS | Yes (NOPB variant) | Yes | No (tin-lead) | No (tin-lead) | Yes | Yes |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR |
Key Differentiators
- Specified over a wide sample-rate window of 500 ksps to 1 Msps, not just a single rate (vs Single-rate 10-bit SAR ADCs from competitors)
- Wide 0V to 5.25V analog input lets the part digitize 5V transducer outputs directly (vs ADC102S101CIMMX/NOPB (12 bits, 2 channels only))
- 10-bit resolution in the same VSSOP-10 footprint as 8-bit ADC084S101 family (vs ADC084S101CIMMX (8-bit))
Design Notes
The ADC104S101CIMMX operates from a single 2.7V to 5.25V supply; decouple VDD with a 0.1 uF X7R ceramic placed within 5 mm of the pin, with a bulk 10 uF ceramic close to the chip. A noisy VDD rail converts directly into poor INL and reduced SNR, so derive the ADC supply from a separate LDO branch from the digital 3.3V/5V rail. Estimate: for 1 Msps operation the part draws low-mA supply current; refer to datasheet curves for exact figure.
Do not exceed 5.25V on any analog input pin or the reference input - permanent latch-up can occur. The CSn pin must stay low for the duration of the 16 SCLK cycles of a conversion frame. Driving CSn high in mid-frame aborts the conversion and returns DOUT to high-impedance. The ADC requires an external reference voltage applied before SCLK toggling begins; floating the REF pin results in full-scale drift and inconsistent output codes. Use 1% or better supply filtering if the reference is not a dedicated reference IC.
Place the input RC anti-alias filters within 10 mm of each analog input pin with the resistor toward the ADC and the capacitor to the ground plane. Route the SPI clock (SCLK), data (DOUT), and chip select (CSn) as parallel single-ended traces over a continuous ground plane, length-matched within 5 mm. Keep analog input traces well away from the SPI digital traces to minimize digital-to-analog coupling. The exposed pad (if present on the specific VSSOP variant) should be soldered to a small ground pour for thermal dissipation, although the part dissipates negligible power at 1 Msps.
Estimated: with the TI datasheet 4.88 mV LSB at 5V reference (10-bit full scale), the input bandwidth-limited noise should stay below 1 LSB rms for reliable 10-bit acquisition. Add a 1 kHz-to-10 kHz bandwidth-appropriate RC filter (R=100 ohm, C=10 nF) per channel to suppress clock noise from adjacent digital signals. Operate the digital SPI lines with controlled impedance over a continuous ground plane to avoid ground bounce, which can inject noise into the sample-and-hold and cause non-monotonic codes at low input ranges.
Compliance Information
ADC104S101CIMMX/NOPB variant is RoHS compliant and lead-free per DigiKey listing. The original ADC104S101CIMMX (without NOPB suffix) is tin-lead; both are industrial temperature grade. AEC-Q100 not applicable - this is a standard industrial part; AEC-Q100 grade versions are not offered in this family.
