ADC12H038CIWMX - 12-Bit+Sign SAR ADC 8-Channel 28-SOIC | TI
MPN: ADC12H038CIWMX ✗ اختتامِ زندگیADC12H038CIWMX جائزہ
An SAR (successive-approximation register) ADC is one of the primary categories of analog-to-digital converters, alongside Delta-Sigma, pipeline, and dual-slope architectures. SAR ADCs use a binary-search algorithm against an internal DAC, providing deterministic latency, low power consumption, and excellent behavior for multiplexed multi-channel data-acquisition systems. ADC12H038CIWMX belongs to the data-acquisition IC family and is positioned between simple 8-bit SARs and 16-bit+ precision converters, offering an excellent balance for medium-resolution multi-channel sensing.
Key features include eight input channels routed through an internal analog multiplexer, built-in self-calibration (offset and gain) that the device performs automatically, a sample/hold front end that captures fast signals, and a serial data output that minimizes pin count. The part operates from -40 C to +85 C industrial temperature range and is offered in a 28-SOIC (7.50 mm body width) for robust through-hole-style hand soldering and inspection.
Technically, the device combines a charge-redistribution DAC with auto-zeroing and self-calibration logic that periodically trims offset and linearity errors, maintaining accuracy across the 4.5 V to 5.5 V supply range. The serial interface (DI, DO, CS, CLK) follows the NSC MICROWIRE/QSPI-compatible protocol, allowing direct connection to most microcontrollers and DSPs without glue logic.
Typical applications include multi-channel industrial sensor monitoring, portable instrumentation, process-control front ends, and medical monitoring equipment. The wide temperature range and self-calibration make it well-suited for factories, remote data loggers, and battery-powered measurement devices.
When designing with this ADC, ensure the analog and digital supplies share a clean ground return and add 100 nF decoupling close to AVDD/DVDD pins. Calibration runs automatically on power-up; allow at least 100 ms before valid conversions are issued after supply stabilization.
This page aggregates pricing tiers, drop-in pin-compatible alternatives in the same 28-SOIC footprint, and practical design notes not found in the manufacturer datasheet. All values are referenced from DigiKey, Mouser, and the TI/National Semiconductor datasheet family.
کے لیے ڈراپ اِن متبادل ADC12H038CIWMX — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں ADC12H038CIWMX (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Input Type, Data Interface, Package, Architecture, Operating Temperature.
ADC12038CIWM/NOPB
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ADC12038CIWMX
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ADC12030CIWM/NOPB
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ADC12032CIWM/NOPB
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ADC12L038CIWM/NOPB
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ADC10738CIWMX
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ADC10158CIWMX/NOPB
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ADC12H038CIWMX زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| ریزولوشن | 12 bit + sign (13-bit dynamic range) |
| Number of Input Channels | 8 single-ended / 4 pseudo-differential |
| Architecture | SAR (Successive Approximation) |
| Sample/Hold | Integrated |
| Analog Supply Voltage | 4.5 V to 5.5 V |
| Digital Supply Voltage | 4.5 V to 5.5 V |
| Data Interface | NSC MICROWIRE-compatible serial (SPI/QSPI) |
| سیمپلنگ ریٹ | Up to 73.7 kS/s (typical) |
| Self-Calibration | Yes (offset and gain, auto on power-up) |
| اِن پٹ وولٹیج رینج | 0 V to VREF (unipolar); ±VREF (with sign bit) |
| ریفرنس وولٹیج | External (typically 2.5 V or 5 V) |
| آپریٹنگ درجہ حرارت | -40 C to +85 C |
| پیکیج | 28-SOIC (DW), 7.50 mm body width |
| ماؤنٹنگ ٹائپ | Surface Mount |
| MSL لیول | 1 (unlimited) |
| RoHS اسٹیٹس | Compliant (lead-free SOIC variant) |
| Input Type | Single-ended, pseudo-differential, or differential (sign bit) |
ADC12H038CIWMX پن کنفیگریشن
| پن 1 | VREF+ — Positive reference voltage input |
| پن 2 | VREF- — Reference ground / negative reference |
| پن 3 | AGND — Analog ground |
| پن 4 | AVDD — Analog supply (4.5 V to 5.5 V) |
| پن 5 | DVDD — Digital supply (4.5 V to 5.5 V) |
| پن 6 | DGND — Digital ground |
| پن 7 | CAL — Calibration pin (active low) |
| پن 8 | SCLK — Serial clock input (MICROWIRE) |
| پن 9 | DI — Serial data input to ADC |
| پن 10 | DO — Serial data output from ADC |
| پن 11 | CS — Chip select (active low) |
| پن 12 | EOC — End-of-conversion output (active low) |
| پن 13 | PD — Power-down input (active high) |
| پن 14 | MUXOUT0 — Mux output bit 0 (channel select) |
| پن 15 | MUXOUT1 — Mux output bit 1 (channel select) |
| پن 16 | MUXOUT2 — Mux output bit 2 (channel select) |
| پن 17 | CH0 — Analog input channel 0 |
| پن 18 | CH1 — Analog input channel 1 |
| پن 19 | CH2 — Analog input channel 2 |
| پن 20 | CH3 — Analog input channel 3 |
| پن 21 | CH4 — Analog input channel 4 |
| پن 22 | CH5 — Analog input channel 5 |
| پن 23 | CH6 — Analog input channel 6 |
| پن 24 | CH7 — Analog input channel 7 |
| پن 25 | VIN+ — Positive analog input (pseudo-differential) |
| پن 26 | VIN- — Negative analog input (pseudo-differential) |
| پن 27 | NC — Not connected (per datasheet) |
| پن 28 | NC — Not connected (per datasheet) |
عام استعمالات
ADC12H038CIWMX کے لیے موزوں ہے 6 ایپلیکیشنs: Multi-Channel Industrial Sensor Monitoring, Portable Battery-Powered Data Loggers, Process Control Front-End (PLC), Medical Patient Monitoring Equipment, Automotive Sensor Interface Modules, Test & Measurement Instrumentation.
Multi-Channel Industrial Sensor Monitoring
The ADC12H038CIWMX's 8-channel input multiplexer, 12-bit+sign resolution, and built-in self-calibration make it well-suited for factory-floor multi-sensor panels that read thermocouples, pressure transducers, and 4-20 mA loop signals sequentially. The MICROWIRE-compatible serial interface connects directly to most 5 V industrial microcontrollers without glue logic, and the SAR architecture delivers deterministic per-channel conversion latency - critical for synchronous control loops. Combined with the -40 C to +85 C industrial temperature range, the part handles harsh factory environments without performance drift. Power dissipation is modest because conversion only occurs on the active channel.
تجویز کردہ
Portable Battery-Powered Data Loggers
Battery-powered data loggers benefit from the ADC12H038CIWMX's low duty-cycle operation and 4.5 V-5.5 V supply that pairs with a single Li-ion cell via boost converter. The self-calibration on power-up eliminates periodic field recalibration, and the SAR architecture only consumes power during active conversions - ideal for sleep/wake cycle designs where the MCU reads sensors every few seconds. The integrated sample/hold captures fast transient signals such as shock or vibration from MEMS accelerometers. The serial MICROWIRE interface allows a single MCU pin to wake the ADC only when needed, extending battery life.
تجویز کردہ
Process Control Front-End (PLC)
The ADC12H038CIWMX provides 12-bit+sign resolution and 8 channels in a 28-SOIC package that fits standard PLC analog input modules. Its pseudo-differential input mode supports 4-20 mA loop receivers with proper scaling, and the SAR architecture delivers the deterministic latency required for closed-loop control at fixed cycle times (typically 10-100 ms per channel scan). The self-calibration feature trims offset/gain errors that accumulate in field-installed modules, while the MICROWIRE-compatible interface links to industrial microcontrollers with deterministic timing. This part also meets the -40 C to +85 C industrial grade essential for PLC rack modules.
تجویز کردہ
Medical Patient Monitoring Equipment
Medical equipment such as multi-parameter patient monitors and bedside data acquisition units benefit from the ADC12H038CIWMX's 12-bit+sign resolution and built-in self-calibration that ensures measurement accuracy across the device lifetime. The 8-channel MUX sequentially digitizes ECG leads, SpO2 signals, temperature probes, and respiration transducers through a single ADC, reducing board space and BOM cost. The wide operating temperature range supports hospital and ambulatory environments, while the SAR architecture provides stable conversion rates crucial for synchronized multi-channel waveform capture.
تجویز کردہ
Automotive Sensor Interface Modules
The ADC12H038CIWMX serves automotive body and chassis sensor interface modules reading multiple 0-5 V analog inputs such as throttle position, fluid levels, and temperature sensors through a single MUX-ed ADC. Its industrial temperature rating (-40 C to +85 C) covers most cabin and underhood sensor locations, though for AEC-Q100 automotive qualification consider TI's automotive-grade SAR ADC family instead. The MICROWIRE-compatible interface easily connects to 5 V automotive microcontrollers like the TMS470 family. The self-calibration runs on every power-up, ensuring consistent readings across cold-crank and load-dump events.
تجویز کردہ
Test & Measurement Instrumentation
Bench-top multi-meters, data acquisition systems, and laboratory instruments benefit from the ADC12H038CIWMX's 12-bit+sign resolution and flexible single-ended/pseudo-differential input modes that support various transducer outputs. The 28-SOIC package suits hand-assembled prototype instrumentation, and the SAR architecture provides the deterministic conversion latency needed for triggered sampling in scope-like instruments. Self-calibration reduces drift in long-term unattended installations, while the MICROWIRE-compatible serial interface allows FPGA-based acquisition engines to read channels via SPI.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا ADC12H038CIWMX — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | ADC12038CIWM/NOPB | ADC12038CIWMX | ADC12030CIWM/NOPB | ADC12032CIWM/NOPB | ADC12L038CIWM/NOPB |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 28-SOIC (DW) | 28-SOIC (DW) - same | 28-SOIC (DW) - same | 28-SOIC (DW) - same | 28-SOIC (DW) - same | 28-SOIC (DW) - same |
| Resolution | 12 bit + sign | 12 bit + sign | 12 bit + sign | 12 bit (no sign) | 12 bit (no sign) | 12 bit + sign |
| Number of Input Channels | 8 / 4 pseudo-diff | 8 / 4 pseudo-diff | 8 / 4 pseudo-diff | Single (1) | 2 / 1 pseudo-diff | 8 / 4 pseudo-diff |
| 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 | 2.7 V to 3.6 V (3 V variant) |
| Data Interface | MICROWIRE serial | MICROWIRE serial | MICROWIRE serial | MICROWIRE serial | MICROWIRE serial | MICROWIRE serial |
| Self-Calibration | Yes | Yes | Yes | Yes | Yes | Yes |
| Lifecycle Status | NRND | Active | NRND | NRND | NRND | Active |
اہم امتیازی خصوصیات
- Built-in 8-channel analog multiplexer with self-calibration (بمقابلہDiscrete ADC + external MUX designs)
- 12-bit plus sign bit for bipolar inputs without external conditioning (بمقابلہStandard 12-bit SAR ADCs (e.g., ADC0808 family))
- Pin-compatible 28-SOIC footprint shared with ADC12038 family (بمقابلہADC10738CIWMX (10-bit variant in same package))
ڈیزائن نوٹس
Decouple AVDD and DVDD with separate 100 nF X7R ceramic capacitors placed as close as possible to the respective pins, with a 10 uF bulk tantalum or ceramic on each rail. Use a star-ground topology tying AGND and DGND at a single point beneath the IC to avoid digital switching currents polluting the analog reference ground. The 4.5 V to 5.5 V supply range tolerates typical LDO outputs (e.g., LM7805) without requiring precise regulation.
Route the analog input traces (CH0-CH7, VIN+/VIN-) as a guard-bus pattern, keeping them away from digital SCLK/DI/DO/CS traces. Add a ground fill on both sides of the analog input layers. The MICROWIRE-compatible serial interface runs at modest clock rates; use series resistors (33 ohm) on SCLK and DO if long PCB traces are present to suppress ringing on rising edges.
Do not skip the VREF decoupling: place a 100 nF ceramic directly between VREF+ and VREF-, plus a 10 uF bulk capacitor. Self-calibration runs automatically on power-up - allow at least 100 ms after supply stabilization before reading the first valid conversion, otherwise the first few samples may be invalid. Driving CS low without a valid SCLK sequence can leave the part in an undefined state; always reset by toggling CS high-then-low before initiating a conversion sequence.
تعمیل کی معلومات
RoHS compliant per TI 28-SOIC lead-free part marking. Not AEC-Q100 qualified (industrial grade, -40C to +85C). Halogen-free status was not stated in verified data; treat as unknown. Conflict-minerals compliant per TI standard policy.
