ADC10662CIWMX - 10-Bit 1.5MSPS ADC w/ 2-Input MUX | Texas Instruments
MPN: ADC10662CIWMX ✗ Cuối đờiADC10662CIWMX Tóm tắt
An ADC (analog-to-digital converter) is a semiconductor device that converts continuous analog signals into discrete digital codes. The ADC10662 belongs to the successive-approximation / multi-step flash hybrid converter family, which sits in the broader hierarchy of data converter -> signal chain IC -> analog mixed-signal IC. Its 2-input analog multiplexer allows two channels to be sampled without an external analog switch, simplifying front-end signal conditioning in data acquisition systems.
Key features include 10-bit resolution, 1.5 MSPS sampling rate (1.5M samples per second), 2 analog input channels, on-chip sample/hold, low power CMOS architecture, and a parallel digital output bus. The wide SOIC-24 package (7.5 mm body width) eases hand-prototyping and provides robust thermal performance for industrial environments.
The ADC10662 uses a patented multi-step conversion architecture that combines flash and successive-approximation techniques to achieve fast conversion (360 ns) at lower power than a full-flash 10-bit design. The on-chip sample-and-hold eliminates the need for an external track-and-hold amplifier, and the integrated 2-channel analog multiplexer reduces BOM cost in multi-sensor systems.
Typical applications include industrial process control, data acquisition systems, portable instrumentation, automotive sensor interfaces, and embedded control boards where 10-bit resolution at sub-microsecond conversion rates is sufficient. The wide SOIC package and 5 V supply simplify retrofit designs in legacy 8-bit and 16-bit microcontroller systems.
When designing with this device, note that the ADC10661 and ADC10662 families have been marked obsolete by the manufacturer; for new designs, consider pin-compatible alternatives in the same package. Decouple AVDD and DVDD separately with 0.1 uF ceramic capacitors placed close to the IC pins to keep digital switching noise out of the analog path.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet - including a cross-package compatibility matrix and verified industry-grade substitutes for EOL replacement planning.
Bộ thay thế dễ dàng lắp đặt cho ADC10662CIWMX — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ADC10662CIWMX (cùng hình factor và footprint) — khác nhau ở Architecture, Package, Analog Supply Voltage, Conversion Time, Data Interface.
ADC10662CIWM/NOPB
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADC10062CIWM/NOPB
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADC10158CIWMX/NOPB
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADC10464CIWMX/NOPB
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADC10662CIWMX Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 10 bit |
| Number of Analog Inputs | 2 (multiplexed) |
| Tỷ lệ lấy mẫu | 1.5 MSPS (1.5M samples per second) |
| Conversion Time | 360 ns |
| Architecture | Multi-step (Flash + Successive Approximation hybrid) |
| Data Interface | Parallel, word access |
| Analog Supply Voltage | +5 V (single supply) |
| On-Chip Sample/Hold | Yes |
| Number of Channels | 2 |
| Input Type | Single-ended, analog multiplexer |
| Hộp | 24-SOIC (SOIC-24, 7.50 mm body width, 300 mil) |
| Package Code | PDSO24 / SOP24 / SOIC-24 |
| Terminal Form | Gull Wing |
| Nhiệt độ hoạt động | -40C to +85C (industrial grade) |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tape & Reel (TR) |
| Technology | CMOS |
Cấu hình chân ADC10662CIWMX
| Chân 1 | IN0 — Analog input channel 0 |
| Chân 2 | IN1 — Analog input channel 1 |
| Chân 3 | AGND — Analog ground |
| Chân 4 | AVDD — Analog +5 V supply |
| Chân 5 | VREF — Reference voltage input |
| Chân 6 | REFOUT — Internal reference output |
| Chân 7 | DGND — Digital ground |
| Chân 8 | DVDD — Digital +5 V supply |
| Chân 9 | DB0 — Digital output bit 0 (LSB) |
| Chân 10 | DB1 — Digital output bit 1 |
| Chân 11 | DB2 — Digital output bit 2 |
| Chân 12 | DB3 — Digital output bit 3 |
| Chân 13 | DB4 — Digital output bit 4 |
| Chân 14 | DB5 — Digital output bit 5 |
| Chân 15 | DB6 — Digital output bit 6 |
| Chân 16 | DB7 — Digital output bit 7 |
| Chân 17 | DB8 — Digital output bit 8 |
| Chân 18 | DB9 — Digital output bit 9 (MSB) |
| Chân 19 | MUXSEL — Analog input channel select |
| Chân 20 | CONVST — Conversion start |
| Chân 21 | RD — Read strobe |
| Chân 22 | CS — Chip select (active low) |
| Chân 23 | INT — Conversion complete interrupt |
| Chân 24 | OF — Overflow output |
Ứng dụng tiêu biểu
ADC10662CIWMX phù hợp cho 6 Áp dụngs: Industrial Process Control, Data Acquisition Systems (DAQ), Portable Instrumentation, Automotive Sensor Interface, Embedded Control Boards, Legacy Repair and Maintenance.
Industrial Process Control
The ADC10662CIWMX fits industrial process control loops where 10-bit resolution and 1.5 MSPS sampling rate are sufficient to digitize sensor outputs from thermocouples, pressure transducers, and 4-20 mA loop receivers. Its 2-channel on-chip multiplexer handles two sensor inputs without an external analog switch, reducing BOM cost. The 5 V single supply aligns with industrial 24V->5V rails, and the -40C to +85C industrial temperature range supports factory-floor deployment. Engineers should add RC anti-aliasing filters ahead of each analog input and use separate AVDD/DVDD decoupling to keep PLC digital switching noise out of the conversion path.
Được đề xuất
Data Acquisition Systems (DAQ)
In multi-channel data acquisition systems, the ADC10662CIWMX serves as a per-board ADC for low-channel-count subsystems. Its parallel word-access interface allows direct connection to 8-bit and 16-bit microcontrollers or FPGAs without serial-port overhead, supporting 1.5 MSPS real-time sampling. The on-chip sample-and-hold eliminates external THA, simplifying board layout. For higher channel count, multiple ADC10662 devices can be paralleled. The wide SOIC-24 package supports hand-prototyping and rework in laboratory DAQ instruments.
Được đề xuất
Portable Instrumentation
The ADC10662CIWMX is well-suited to portable handheld instruments such as digital multimeters, portable oscilloscope front-ends, and field data loggers. Its CMOS multi-step architecture delivers 1.5 MSPS at modest power consumption, extending battery life. The 2-input MUX supports differential measurement setups (sensor + reference) without extra switching ICs. Industrial temperature range allows field deployment across seasons. Design tip: route the analog ground (AGND) separately from digital ground (DGND) and tie them at a single point near the IC to minimize ground-loop noise in low-level measurements.
Được đề xuất
Automotive Sensor Interface
In non-safety automotive applications, the ADC10662CIWMX can digitize outputs from throttle position sensors, manifold pressure sensors, and temperature probes in older vehicle ECUs. Its industrial temperature range covers under-hood conditions for many platforms, and the 5 V supply is standard in 12V automotive electrical systems. For new automotive designs, however, the lack of AEC-Q100 qualification is a hard constraint; engineers should migrate to AEC-Q100-qualified alternatives such as the TI ADC10158 family. The wide SOIC package aids rework in service-depot repair scenarios.
Được đề xuất
Embedded Control Boards
The ADC10662CIWMX is commonly used on legacy 8-bit and 16-bit microcontroller expansion boards for digitizing analog sensors - think HVAC controllers, security panel I/O, and industrial scale indicators. Its parallel interface matches legacy bus architectures without requiring an SPI or I2C engine, simplifying firmware. The 2-channel MUX supports redundant sensor inputs for fault detection. Designers should note the part's obsolete status and plan a transition to current-production TI ADCs in the same SOIC-24 footprint for new board revisions.
Được đề xuất
Legacy Repair and Maintenance
Because the ADC10662CIWMX is obsolete but still in service in thousands of legacy systems, a primary use today is repair and maintenance of installed equipment - factory PLCs, lab instruments, military/aerospace test gear, and older medical devices. Rochester Electronics and aftermarket distributors stock the part for this support market. Engineers performing board repair should verify the exact suffix (CIWMX vs CIWM) when ordering, since both share the same die but different packaging. The wide SOIC-24 footprint simplifies hand-soldering during depot-level rework.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADC10662CIWMX — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ADC10662CIWM/NOPB | ADC10062CIWM/NOPB | ADC10158CIWMX/NOPB | ADC10464CIWMX/NOPB |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 24-SOIC (7.50 mm wide) | 24-SOIC (7.50 mm wide) - same | 24-SOIC (7.50 mm wide) - same | 24-SOIC (7.50 mm wide) - same | 24-SOIC (7.50 mm wide) - same |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
| Sampling Rate | 1.5 MSPS | 1.5 MSPS | ~1.5 MSPS | ~0.5 MSPS | ~3 MSPS |
| Number of Input Channels | 2 | 2 | 2 | 8 | 2 |
| Data Interface | Parallel | Parallel | Parallel | Parallel | Parallel |
| Supply Voltage | +5 V single | +5 V single | +5 V single | +5 V single | +5 V single |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Lifecycle Status | Obsolete | Obsolete | Active | Active | Active |
Bảo phân biệt quan trọng
- On-chip 2-input analog multiplexer (vsADC10464CIWMX/NOPB)
- Wide SOIC-24 (7.5 mm) package for easy prototyping (vsADC10062CIWM/NOPB)
- Patented multi-step flash + SAR hybrid architecture (vsPure SAR ADCs in same package)
Ghi chú thiết kế
Decouple AVDD (analog +5 V, pin 4) and DVDD (digital +5 V, pin 8) separately, each with a 0.1 uF ceramic capacitor placed within 5 mm of the IC pin. Add a 10 uF bulk tantalum or ceramic cap on each supply rail to suppress transient current spikes during conversion. Tie AGND (pin 3) and DGND (pin 7) at a single point near the IC to avoid ground-loop noise coupling into the analog path. A common pitfall is sharing a single ground pour; this couples digital switching noise into the analog input and degrades effective resolution.
Route analog input traces (IN0, IN1) away from digital output bus lines (DB0-DB9, CONVST, RD, CS) to minimize digital-to-analog crosstalk. Use a ground guard trace on each side of the analog input lines if the layout is dense. Keep the VREF bypass cap within 3 mm of pin 5. Estimated: at 1.5 MSPS with 10-bit resolution, the analog input bandwidth is ~750 kHz (Nyquist); layout-induced stray capacitance above 5 pF can introduce -3 dB roll-off and degrade SNR.
Do not leave MUXSEL (pin 19) floating - tie it high or low through a 10 kohm resistor to a defined logic level, or channel selection will be indeterminate at power-up. Ensure CONVST (pin 20) meets the minimum pulse-width spec from the datasheet; pulses shorter than the spec cause incomplete conversion and erroneous output codes. When using the internal reference (REFOUT, pin 6), add a 1-10 uF bypass cap; without it, reference noise couples into the conversion and INL degrades by 0.5-1 LSB.
Thông tin tuân thủ
Compliance data not present in verified web sources. Part originated at National Semiconductor, now under Texas Instruments. Part is obsolete per TI lifecycle policy. AEC-Q100 not qualified - migrate to AEC-Q100 alternatives for new automotive designs.
