ADC10664CIWM - 10-Bit 360ns 4-Ch ADC w/ Mux & S/H | TI
MPN： ADC10664CIWM ✓ 啟用中ADC10664CIWM 概覽
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.
直接替換替代品，適用於 ADC10664CIWM — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ADC10664CIWM （相同外形與佔位） — 差異在於 Architecture, Conversion Time, RoHS Status, Operating Temperature Range, Data Interface.
ADC10664CIWM/NOPB
✅ 直接替換📋 參考替代品（不在目錄中）
ADC10664CIWMX/NOPB
✅ 直接替換聯絡詢價
查看資料表 →ADC10464CIWMX/NOPB
✅ 直接替換聯絡詢價
查看資料表 →ADC10464CIWMX/NOPB
✅ 直接替換聯絡詢價
查看資料表 →ADC10662CIWM
✅ 直接替換📋 參考替代品（不在目錄中）
ADC10664CIWM 最大額定值與電氣特性
| 解析度 | 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 |
| 輸入電壓範圍 | 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) |
| 工作溫度範圍 | -40 C to +85 C (industrial) |
| 封裝 | 28-pin SOIC Wide (300 mil body) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Non-RoHS (CIWM); RoHS-compliant for /NOPB variants |
| Reference | Internal (no external reference required) |
ADC10664CIWM 腳位配置
| 腳位 1 | DVDD — Digital supply voltage (+5 V) |
| 腳位 2 | A0 — Multiplexer address bit 0 (LSB) |
| 腳位 3 | A1 — Multiplexer address bit 1 (MSB) |
| 腳位 4 | CS — Chip select (active low) |
| 腳位 5 | RD — Read (active low) |
| 腳位 6 | WR — Write / start conversion (active low) |
| 腳位 7 | D0 — Data output bit 0 (LSB) |
| 腳位 8 | D1 — Data output bit 1 |
| 腳位 9 | D2 — Data output bit 2 |
| 腳位 10 | D3 — Data output bit 3 |
| 腳位 11 | D4 — Data output bit 4 |
| 腳位 12 | D5 — Data output bit 5 |
| 腳位 13 | D6 — Data output bit 6 |
| 腳位 14 | AGND — Analog ground |
| 腳位 15 | DGND — Digital ground |
| 腳位 16 | D7 — Data output bit 7 |
| 腳位 17 | D8 — Data output bit 8 |
| 腳位 18 | D9 — Data output bit 9 (MSB) |
| 腳位 19 | INT — Conversion complete interrupt (active low) |
| 腳位 20 | OF — Overflow output (active high) |
| 腳位 21 | NC — Not connected (per datasheet) |
| 腳位 22 | AIN1 — Analog input channel 1 |
| 腳位 23 | AIN2 — Analog input channel 2 |
| 腳位 24 | AIN3 — Analog input channel 3 |
| 腳位 25 | AIN4 — Analog input channel 4 |
| 腳位 26 | REF — Reference voltage (internal) |
| 腳位 27 | AVDD — Analog supply voltage (+5 V) |
| 腳位 28 | AGND — Analog ground (alternate pin) |
典型應用
ADC10664CIWM 適用於 6 應用s: 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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 ADC10664CIWM — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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 |
主要差異化特點
- Single 5 V supply, no external reference required (對比ADC10464CIWM)
- 4-to-1 input multiplexer integrated on-chip (對比ADC10662CIWM)
- Mature bipolar process with 10-15 year supply continuity (對比ADC10464CIWMX/NOPB)
設計說明
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.
合規資訊
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.
