ADC10158CIWMX - 10-Bit+Sign 8-Ch 4µs SAR ADC | Texas Instruments
MPN: ADC10158CIWMX ✗ Cuối đờiADC10158CIWMX Tóm tắt
An SAR ADC is a successive-approximation-register analog-to-digital converter that resolves one bit per clock cycle against an internal or external reference, producing accurate, low-latency conversions ideal for multiplexed data-acquisition front-ends. SAR ADCs sit within the data-converter hierarchy under ADC -> data converter -> mixed-signal IC, favored in industrial monitoring and instrumentation for their deterministic latency and absence of pipeline delay.
Key distinguishing features of the ADC10158 include 10-bit plus-sign resolution (allowing bipolar input swing with a sign bit), 8-channel MUX, integrated 2.5 V reference, low power consumption, and single +5 V supply operation. The sign-bit feature eliminates the need for input signal conditioning in bipolar applications and the on-chip reference simplifies bill-of-materials.
Architecturally, the device combines a capacitive-charge redistribution DAC with successive-approximation logic, a sample-and-hold, a configurable analog input MUX, and a 2.5 V band-gap reference. The parallel output interface and standard microprocessor control inputs simplify host connections without requiring a serial-programming state machine.
Typical applications include industrial process control, multi-channel data acquisition systems, battery-powered instrumentation, motor control feedback loops, and portable medical monitoring where multiple analog sensors share one converter. Pin-compatible same-family parts (ADC10158CIWM/NOPB and ADC10154 series) and function-similar 12-bit ADCs from TI extend design scalability without PCB rework.
One key design trade-off is that the 4 µs conversion time limits this part to sub-200 kHz sampling; for higher throughput, designers should consider pipelined ADCs such as ADC12040/ADC12L063, while keeping the same 28-SOIC footprint pattern in mind where PCB reuse is desired.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond the TI datasheet narrative, giving a single decision-ready reference for engineers evaluating the ADC10158CIWMX for embedded data-acquisition designs.
Bộ thay thế dễ dàng lắp đặt cho ADC10158CIWMX — 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 ADC10158CIWMX (cùng hình factor và footprint) — khác nhau ở Input Type, Number of Input Channels, Operating Temperature, Package, Resolution.
ADC10158CIWM/NOPB
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADC10158CIN/NOPB
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADC10154CIWM
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADC10158CIWMX Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 10-Bit + Sign |
| Number of Channels | 8 (single-ended/differential/pseudo-differential) |
| Architecture | Successive Approximation (SAR) |
| Sampling Rate (Max) | 166 ksamples/second |
| Conversion Time | 4 µs (typical) |
| Input Type | Single-ended, differential, pseudo-differential |
| Data Interface | Parallel |
| Reference | Internal 2.5 V band-gap (external optional) |
| Nhiệt độ hoạt động | -40 °C to +85 °C |
| Hộp / Vỏ | 28-SOIC (0.295 inch / 7.50 mm width) |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tape & Reel (TR) |
| Number of Functions | 1 converter |
| Process Technology | CMOS |
| Trạng thái RoHS | Compliant |
| Temperature Grade | Industrial |
Cấu hình chân ADC10158CIWMX
| Chân 1 | CH0 — Analog input channel 0 |
| Chân 2 | CH1 — Analog input channel 1 |
| Chân 3 | CH2 — Analog input channel 2 |
| Chân 4 | CH3 — Analog input channel 3 |
| Chân 5 | CH4 — Analog input channel 4 |
| Chân 6 | CH5 — Analog input channel 5 |
| Chân 7 | CH6 — Analog input channel 6 |
| Chân 8 | CH7 — Analog input channel 7 |
| Chân 9 | AGND — Analog ground |
| Chân 10 | VREF — Reference voltage (2.5 V internal / external) |
| Chân 11 | D0 — Digital output bit 0 (LSB) |
| Chân 12 | D1 — Digital output bit 1 |
| Chân 13 | D2 — Digital output bit 2 |
| Chân 14 | D3 — Digital output bit 3 |
| Chân 15 | D4 — Digital output bit 4 |
| Chân 16 | D5 — Digital output bit 5 |
| Chân 17 | D6 — Digital output bit 6 |
| Chân 18 | D7 — Digital output bit 7 (MSB) |
| Chân 19 | SIGN — Sign bit output |
| Chân 20 | DGND — Digital ground |
| Chân 21 | CS — Chip select / read strobe |
| Chân 22 | RD — Read strobe |
| Chân 23 | WR — Write / start conversion |
| Chân 24 | MODE — Mode select (MUX configuration) |
| Chân 25 | DVCC — Digital +5 V supply |
| Chân 26 | AVCC — Analog +5 V supply |
| Chân 27 | CLK — Clock input |
| Chân 28 | EOC — End of conversion status |
Ứng dụng tiêu biểu
ADC10158CIWMX phù hợp cho 7 Áp dụngs: Industrial Process Control Multi-Channel Monitoring, Multi-Sensor Data Acquisition Systems (DAQ), Motor Control Feedback and Current Sensing, Portable Medical Monitoring Equipment, Automotive Sensor Interface Modules, Battery-Powered Instrumentation, Test & Measurement Front-End Cards.
Industrial Process Control Multi-Channel Monitoring
The ADC10158CIWMX is a strong fit for industrial process control boards that must scan 4-8 sensors (temperature, pressure, flow) in sequence. Its integrated 8-channel MUX eliminates an external analog switch tree, reducing BOM and PCB area. The on-chip 2.5 V band-gap reference provides adequate absolute accuracy for 10-bit measurements at 5 V full scale, while the 4 µs conversion time supports sampling rates up to 166 kSPS - sufficient for control loops with kHz update rates. The parallel interface connects directly to microcontrollers or FPGAs, simplifying firmware. Across thermocouple, RTD, and 4-20 mA current-loop front-ends, the ADC10158's pseudo-differential mode rejects common-mode noise from long sensor cables typical of plant wiring.
Được đề xuất
Multi-Sensor Data Acquisition Systems (DAQ)
Battery- and USB-powered DAQ modules benefit from the ADC10158CIWMX's combination of 8 multiplexed channels, integrated 2.5 V reference, and modest supply current. The 10-bit + sign resolution allows bipolar signal swing (e.g. ±5 V around virtual ground) without external level shifters - useful for strain-gauge bridges and AC-coupled transducer outputs. With 4 µs conversion and parallel output, the part can serve as the central converter for scan rates of 10-20 kHz aggregate, matching the bandwidth of vibration, acoustic, and seismic sensors. Designers can scale channel count by paralleling multiple ADC10158s, all clocked from a common start-conversion line.
Được đề xuất
Motor Control Feedback and Current Sensing
Brushless DC and stepper motor controllers need to digitize phase currents, bus voltage, and back-EMF signals in real time. The ADC10158CIWMX's 4 µs conversion latency is short enough to be sampled within a typical 50-100 µs PWM cycle, while its 8-channel MUX lets a single converter handle a 3-phase current sense plus auxiliary telemetry channels. The internal 2.5 V reference provides adequate stability for 10-bit torque control, and the -40 to +85 °C range covers automotive under-hood and industrial cabinet environments. Pairing with current-sense amplifiers and isolated gate drivers gives a complete mixed-signal motor-control analog front end.
Được đề xuất
Portable Medical Monitoring Equipment
Portable patient monitors (pulse oximetry, ECG, bedside telemetry) require low-power, multi-channel analog front ends. The ADC10158CIWMX can scan ECG lead-off detect, SpO2 photodiode current, temperature, and battery voltage with a single IC. Its integrated reference lowers total power and cost vs. an external reference chain, and the 10-bit + sign resolution is sufficient for diagnostic-grade displays where 12-bit dynamic range is more than required. The 28-SOIC package is manageable on small PCBs, and the industrial temperature range supports clinical environments. For battery operation, the parallel interface allows efficient burst-mode sampling followed by low-power sleep.
Được đề xuất
Automotive Sensor Interface Modules
Automotive body and chassis modules need to digitize multiple analog sensors (pedal position, suspension travel, oil pressure). The ADC10158CIWMX's -40 to +85 °C industrial range and 28-SOIC footprint suit non-safety-critical body electronics. The 8-channel MUX handles multiple 0-5 V sensor inputs while the integrated 2.5 V reference simplifies the analog supply chain. For AEC-Q100-grade applications, however, an automotive-qualified ADC should be selected - the ADC10158 family is not AEC-Q100 qualified. Engineers can prototype with the ADC10158 and migrate to AEC-Q100 pin-compatibles later.
Được đề xuất
Battery-Powered Instrumentation
Handheld multimeters, field data loggers, and portable test instruments benefit from the ADC10158CIWMX's single +5 V operation, integrated 2.5 V reference, and modest power consumption. The 8-channel MUX supports multi-function meters (voltage, current, resistance, temperature) without an external switch matrix. The 10-bit + sign resolution allows direct measurement of bipolar signals, useful when sensing current via a shunt (which produces a positive or negative drop depending on direction). The 28-SOIC's mechanical robustness suits hand-held equipment with vibration exposure.
Được đề xuất
Test & Measurement Front-End Cards
Modular test instruments (PXI/LXI data-acquisition cards, benchtop loggers, switch-matrix systems) value channel density, deterministic conversion time, and parallel output that the ADC10158CIWMX provides. The 4 µs fixed conversion time ensures repeatable timing, easing calibration routines. Up to 8 single-ended inputs can be scanned in sequence for multi-channel test fixtures, and the parallel interface streams data directly into on-board FPGAs or microcontrollers without serial-protocol overhead. Designers can build scalable 16-/32-/64-channel cards by ganging ADC10158s with shared start-conversion logic.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADC10158CIWMX — 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 | ADC10158CIWM/NOPB | ADC10158CIN/NOPB | ADC10154CIWM |
|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC family (also available in 28-DIP) | 28-SOIC - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 10-Bit + Sign | 10-Bit + Sign | 10-Bit + Sign | 10-Bit + Sign |
| Number of Channels | 8 | 8 | 8 | 4 |
| Sampling Rate (Max) | 166 kSPS | 166 kSPS | 166 kSPS | 166 kSPS |
| Conversion Time | 4 µs | 4 µs | 4 µs | 4 µs |
| Architecture | SAR | SAR | SAR | SAR |
| Internal Reference | 2.5 V (on-chip) | 2.5 V (on-chip) | 2.5 V (on-chip) | 2.5 V (on-chip) |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| Lifecycle Status | NRNR | NRNR | Active | NRNR |
Bảo phân biệt quan trọng
- Integrated 2.5 V band-gap reference on-chip (vsADC10158CIWM/NOPB)
- 10-bit + Sign resolution (bipolar measurement built-in) (vsADC10154CIWM)
- Pin-compatible tape-and-reel packaging for SMT lines (vsADC10158CIN/NOPB)
Ghi chú thiết kế
Estimated: The ADC10158CIWMX requires separate analog and digital +5 V supply pins (AVCC and DVCC); star-route the analog and digital grounds to a single-point connection beneath the IC to prevent digital switching noise from coupling into the analog front-end. Decouple each VCC pin with a 100 nF ceramic capacitor placed within 2-3 mm of the lead, plus a bulk 10 µF tantalum or ceramic capacitor on the board-level rail. Reference decoupling on the VREF pin (100 nF + 10 µF) is critical to keep the internal 2.5 V band-gap reference stable - this directly impacts absolute ADC accuracy.
Place the analog input traces on an inner PCB layer with a ground pour above and below to shield them from digital signals. Keep the analog input trace lengths matched for all 8 channels if you plan to switch between differential pairs at high speed, and use guard traces around high-impedance analog inputs to prevent leakage current from switching digital lines. The 28-SOIC package allows moderate pin escape; place at least 2 vias per VCC/GND pair to minimize supply-lead inductance.
Do not exceed the analog input voltage range (typically VCC ± 0.3 V); over-driving an input without proper clamping can latch up the CMOS input structures. The sign bit only resolves correctly in pseudo-differential or differential configurations; in single-ended mode below ground, the sign bit may be invalid. When using the internal 2.5 V reference, allow at least 1 ms after power-up for the band-gap to settle before initiating conversions, or the first samples will be inaccurate.
Thông tin tuân thủ
RoHS and lead-free compliant per TI product page. Not AEC-Q100 qualified - choose ADS7042 or other AEC-Q100 ADCs for automotive.
