ADC10664CIWM - 10-Bit 360ns 4-Ch ADC w/ Mux & S/H | TI
MPN: ADC10664CIWM ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.2 | $8.20 |
| 10 | $7.45 | $74.50 |
| 100 | $6.3 | $630.00 |
| 500 | $5.1 | $2,550.00 |
| 1,000 | $4.25 | $4,250.00 |
ADC10664CIWM Overview
An ADC (analog-to-digital converter) is a mixed-signal data converter that transforms a continuous analog input voltage into a discrete digital code. The ADC10664 family combines a flash front-end for the most-significant bits with a successive-approximation stage for the LSBs, which is a hybrid architecture that achieves fast conversion (360 ns typical) while keeping die area and power modest. The on-chip sample-and-hold eliminates the need for an external track-and-hold amplifier and allows the converter to digitize full-scale signals with bandwidths up to the Nyquist limit without an external buffer.
Key specifications include 10-bit resolution, 360 ns conversion time (about 2.78 MSPS), 4 single-ended input channels, a built-in sample-and-hold, ±1 LSB linearity (typical), and single 5 V operation. The wide SOIC-28 footprint simplifies layout on standard 0.3-inch DIP-compatible pads and provides a 300-mil body that keeps analog/digital ground separation practical. The /NOPB variants guarantee lead-free and RoHS compliance, while the original CIWM suffix parts may predate the lead-free transition.
Typical applications include industrial process control, data acquisition front-ends, instrumentation, sonar and vibration analysis, automotive telemetry, and any 4-channel multiplexed measurement where 10-bit accuracy and microsecond-class latency are sufficient. The 4-input mux allows continuous scanning of up to four sensors without an external analog switch array.
When designing, place the AGND and DGND pins with a single-point star connection near the ADC, decouple AVDD with a 10 µF tantalum in parallel with a 0.1 µF ceramic placed within 5 mm of the supply pin, and route the four analog inputs symmetrically to minimize channel-to-channel crosstalk. The reference input is internal; for absolute accuracy, drive REF via a low-impedance buffer rather than using a resistive divider from VCC.
The ADC10664 is built on a mature bipolar process and is widely available in long-lifecycle industrial temperature grades, making it well suited for designs that must remain in production for a decade or longer. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that go beyond what the manufacturer datasheet alone provides.
Drop-in alternatives for ADC10664CIWM — 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 ADC10664CIWM (same form factor and footprint) — differing in Architecture, Conversion Time, RoHS Status, Operating Temperature Range, Data Interface.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADC10664CIWM/NOPB
✅ Drop-In📋 Reference alternative (not in catalog)
ADC10664CIWMX/NOPB
✅ Drop-In✓ In Stock
$5.31 / Unit
View Datasheet →ADC10464CIWMX/NOPB
✅ Drop-In✓ In Stock
$5.74 / Unit
View Datasheet →ADC10464CIWMX/NOPB
✅ Drop-In✓ In Stock
$5.74 / Unit
View Datasheet →ADC10662CIWM
✅ Drop-In📋 Reference alternative (not in catalog)
ADC10664CIWM Maximum Ratings & Electrical Characteristics
| Resolution | 10 bits |
| Architecture | Flash + Successive Approximation (hybrid) |
| Conversion Time | 360 ns (typical) |
| Maximum Sample Rate | 1.5 MSPS (typical, dependent on mode) |
| Number of Analog Inputs | 4 single-ended (1 extra internally routed on chip 3) |
| Input Multiplexer | 4-to-1, 2-bit address |
| Sample-and-Hold | On-chip |
| Input Voltage Range | 0 V to 5 V (single-ended, with 5 V supply) |
| Supply Voltage (AVDD/DVDD) | 4.5 V to 5.5 V |
| Integral Nonlinearity (INL) | ±1 LSB (typical) |
| Operating Temperature Range | -40 C to +85 C (industrial) |
| Package | 28-pin SOIC Wide (300 mil body) |
| Mounting Type | Surface Mount |
| RoHS Status | Non-RoHS (CIWM); RoHS-compliant for /NOPB variants |
| Reference | Internal (no external reference required) |
ADC10664CIWM Pin Configuration
| Pin 1 | DVDD — Digital supply voltage (+5 V) |
| Pin 2 | A0 — Multiplexer address bit 0 (LSB) |
| Pin 3 | A1 — Multiplexer address bit 1 (MSB) |
| Pin 4 | CS — Chip select (active low) |
| Pin 5 | RD — Read (active low) |
| Pin 6 | WR — Write / start conversion (active low) |
| Pin 7 | D0 — Data output bit 0 (LSB) |
| Pin 8 | D1 — Data output bit 1 |
| Pin 9 | D2 — Data output bit 2 |
| Pin 10 | D3 — Data output bit 3 |
| Pin 11 | D4 — Data output bit 4 |
| Pin 12 | D5 — Data output bit 5 |
| Pin 13 | D6 — Data output bit 6 |
| Pin 14 | AGND — Analog ground |
| Pin 15 | DGND — Digital ground |
| Pin 16 | D7 — Data output bit 7 |
| Pin 17 | D8 — Data output bit 8 |
| Pin 18 | D9 — Data output bit 9 (MSB) |
| Pin 19 | INT — Conversion complete interrupt (active low) |
| Pin 20 | OF — Overflow output (active high) |
| Pin 21 | NC — Not connected (per datasheet) |
| Pin 22 | AIN1 — Analog input channel 1 |
| Pin 23 | AIN2 — Analog input channel 2 |
| Pin 24 | AIN3 — Analog input channel 3 |
| Pin 25 | AIN4 — Analog input channel 4 |
| Pin 26 | REF — Reference voltage (internal) |
| Pin 27 | AVDD — Analog supply voltage (+5 V) |
| Pin 28 | AGND — Analog ground (alternate pin) |
Typical Applications
ADC10664CIWM is suitable for 6 applications: Industrial Process Control Data Acquisition, Sonar and Vibration Analysis Front-End, Automotive Telemetry and Sensor Readout, Test and Measurement Instrumentation, Medical Patient Monitoring, Data Acquisition Plug-in Cards and PC-based Measurement.
Industrial Process Control Data Acquisition
The ADC10664CIWM is well suited for 4-channel industrial data acquisition front-ends scanning pressure, flow, level, and temperature transducers. Its 4-to-1 input multiplexer allows a single converter to digitize four 0-5 V sensor outputs sequentially without an external analog switch, while the 360 ns conversion (1.5 MSPS) supports per-channel throughput above 375 kSPS when oversampling is not required. The on-chip sample-and-hold eliminates the need for an external track-and-hold, simplifying the analog front-end and reducing BOM count. The industrial -40C to +85C temperature grade matches process-control cabinet environments. Place 100 ohm series resistors and 1 nF capacitors on each AIN line to form a 100 kHz low-pass filter for 4-20 mA loop receivers terminated with 250 ohm shunts.
Recommended
Sonar and Vibration Analysis Front-End
The ADC10664CIWM's 360 ns conversion (2.78 MSPS throughput) makes it usable for sonar beamforming, vibration monitoring, and ultrasonic non-destructive testing at frequencies up to about 1 MHz. Its on-chip sample-and-hold captures fast transient signals without external buffering, while the 4-channel input mux supports 4-hydrophone sonar arrays or 4-axis vibration sensor clusters (XYZ plus a reference channel). The 10-bit resolution provides 60 dB dynamic range, which is sufficient for envelope detection and frequency-domain analysis. The wide SOIC-28 package is thermally adequate for continuous sampling at 1.5 MSPS with a 5 V supply, and the industrial temperature range handles harsh industrial test environments.
Recommended
Automotive Telemetry and Sensor Readout
The ADC10664CIWM is suitable for automotive sensor cluster readout where 10-bit resolution and 4-channel input multiplexing reduce ECU cost. The 4-to-1 mux supports TPMS, oil-pressure, oil-temperature, and coolant-level monitoring through a single ADC, and the 360 ns conversion allows 250 kSPS per channel with simple round-robin scheduling. The -40C to +85C industrial temperature range covers cabin and under-hood sub-modules, though for full automotive under-hood or transmission applications a Q-100 qualified variant is required. The wide SOIC-28 package withstands typical automotive PCB stress and is well supported by 6 mil trace/space design rules.
Recommended
Test and Measurement Instrumentation
The ADC10664CIWM fits bench-top multimeter and handheld test instrument designs where 10-bit resolution and 1.5 MSPS throughput are sufficient for digitizing 4-wire or 2-wire measurement channels. The on-chip sample-and-hold provides accurate sampling of dynamic signals without external T/H amplifiers, while the 4-to-1 mux allows simultaneous scanning of voltage, current, temperature, and reference channels through a single ADC. The SOIC-28 wide package simplifies hand-soldered prototype rework and supports both commercial and industrial temperature grades. Pair the ADC with a precision op-amp front-end (e.g., AD8628 or AD8629) for high-impedance sensor signal conditioning.
Recommended
Medical Patient Monitoring
The ADC10664CIWM is used in patient monitoring devices for digitizing 4-channel low-frequency biosignals such as SpO2 plethysmography, respiration, skin temperature, and body impedance. The 10-bit resolution provides adequate quantization for 0-5 V physiological signals sampled at 1 kSPS to 100 kSPS, while the 4-channel mux reduces the analog front-end complexity and PCB area. The on-chip sample-and-hold captures the analog waveform accurately without external buffering, and the industrial temperature range covers clinical and portable monitoring environments. Add a 1 kHz first-order RC low-pass filter on each AIN input to limit out-of-band noise and prevent aliasing.
Recommended
Data Acquisition Plug-in Cards and PC-based Measurement
The ADC10664CIWM serves as a 4-channel 10-bit front-end for PC-based data acquisition (DAQ) cards, USB measurement pods, and industrial PCs. The 4-to-1 input mux allows up to 4 single-ended analog inputs per converter, and multiple ADCs can share a bus to expand channel count. The 1.5 MSPS throughput with 360 ns conversion time supports per-channel rates well above typical USB Full-Speed data rates, while the SOIC-28 wide package simplifies multi-layer PCB layout with separate analog and digital ground planes. The mature bipolar process of the ADC10664CIWM guarantees 10-15 years of supply continuity, which is critical for industrial PC card designs with long deployment lifecycles.
Recommended
Recommended Products Summary
Engineering reference data for ADC10664CIWM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADC10664CIWM/NOPB | ADC10664CIWMX/NOPB | ADC10464CIWM | ADC10464CIWMX/NOPB | ADC10662CIWM |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SOIC-28 Wide | SOIC-28 Wide - same | SOIC-28 Wide - same | SOIC-28 Wide - same | SOIC-28 Wide - same | SOIC-28 Wide - same |
| Resolution | 10 bits | 10 bits | 10 bits | 14 bits | 14 bits | 10 bits |
| Conversion Time | 360 ns | 360 ns | 360 ns | 3.6 us (10x slower) | 3.6 us (10x slower) | 360 ns |
| Input Channels | 4 single-ended (with 4-to-1 mux) | 4 single-ended | 4 single-ended | 4 single-ended | 4 single-ended | 2 single-ended |
| Sample-and-Hold | On-chip | On-chip | On-chip | On-chip | On-chip | On-chip |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| RoHS Compliance | Non-RoHS (CIWM) | RoHS-compliant lead-free | RoHS-compliant lead-free | Non-RoHS | RoHS-compliant lead-free | Non-RoHS |
Key Differentiators
- Single 5 V supply, no external reference required (vs ADC10464CIWM)
- 4-to-1 input multiplexer integrated on-chip (vs ADC10662CIWM)
- Mature bipolar process with 10-15 year supply continuity (vs ADC10464CIWMX/NOPB)
Design Notes
Estimated: The ADC10664CIWM draws about 25 mA typical from AVDD (analog) plus 5 mA from DVDD (digital) at full sample rate, for roughly 150 mW total. Decouple AVDD with a 10 uF tantalum in parallel with a 0.1 uF ceramic placed within 5 mm of the supply pin, and decouple DVDD with a separate 1 uF ceramic plus 0.1 uF ceramic. Use a single-point star connection between AGND and DGND at the ADC, with the analog return path carrying the (larger) analog supply current and the digital return path confined to the IC side of the star.
Route the four AIN lines symmetrically and in parallel to minimize channel-to-channel crosstalk, and place 100 ohm series resistors in series with 1 nF capacitors on each AIN line to form a 100 kHz first-order anti-alias filter. Place the 0.1 uF supply bypass capacitors within 5 mm of the respective supply pins. Use a separate analog ground plane connected to the AGND pin and a separate digital ground plane connected to the DGND pin, joined only at the ADC. Keep digital output lines (D0-D9, RD, WR, CS, INT) routed away from the analog input traces to avoid digital noise coupling into the analog front-end.
Do not drive the analog inputs (AIN1-AIN4) with source impedances above 1 kohm, because the on-chip sample-and-hold's acquisition time is optimized for low-impedance sources (typical source impedance less than 500 ohm). Higher source impedance increases acquisition time and reduces conversion accuracy. Add a unity-gain buffer (e.g., AD8628 or OPA277) if the signal source has more than 1 kohm output impedance. Do not exceed 5.5 V on AVDD/DVDD or go below 4.5 V, as the part loses linearity outside this range. Do not operate the digital outputs above DVDD level; they are not 3.3 V tolerant and require a 5 V tolerant host or level shifters.
The ADC10664CIWM's on-chip sample-and-hold has an aperture time of about 30 ns, which limits the input bandwidth to about 5 MHz. For signals above 1 MHz, the bandwidth of the front-end buffer becomes the limiting factor. Add a 10 ohm series resistor at each AIN pin to dampen resonances with the input capacitance (typical 10 pF), forming a critically-damped low-pass response. For 4-channel multiplexed operation, allow at least 500 ns settling time after switching the mux address (A0/A1) before asserting the WR pin to start the next conversion, otherwise the previous channel's residual charge will introduce a settling error on the current conversion.
Compliance Information
The original ADC10664CIWM (without /NOPB suffix) is non-RoHS and uses SnPb-eutectic terminal finish. For RoHS compliance, use the /NOPB lead-free variant. AEC-Q100 qualification is not available for the ADC10664 family; for automotive designs, an external Q-100 qualified ADC (such as the ADS8482IBRGZR) should be used.
