ADC12030CIWM - 12-Bit+Sign SAR ADC, 2-Ch MUX | Texas Instruments
料号： ADC12030CIWM ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.2 | $112.00 |
| 100 | $9.85 | $985.00 |
| 500 | $8.7 | $4,350.00 |
| 1,000 | $7.95 | $7,950.00 |
ADC12030CIWM 概述
A successive-approximation ADC (SAR ADC) is a type of analog-to-digital converter that performs a binary search across the reference range using an internal sample-and-hold, a comparator, a DAC, and a successive-approximation register. SAR ADCs are valued for deterministic latency, no pipeline delay, low power dissipation, and excellent DC accuracy. They sit within the broader hierarchy of ADC architectures (SAR -> Nyquist-rate ADC -> data converter -> signal-chain IC -> semiconductor), and are typically paired with op-amps, voltage references, and MCU SPI peripherals to form complete analog front-ends.
Key features include 12-bit resolution plus sign extension (effective 13-bit dynamic range for measurements crossing zero), a self-calibration command for on-demand linearity correction, an external voltage reference (typically 5 V) for ratiometric or absolute measurements, a wide common-mode input range when used in differential mode, and an SPI/QSPI/MICROWIRE-compatible serial data interface. Operating from a single +5 V analog supply and a +5 V (or +3.3 V logic-compatible) digital supply, the device draws only a few milliwatts during continuous conversion and reduces to nanoamp-level standby when CS is held high.
Typical applications include precision industrial process control, portable data-logging instruments, automotive sensor signal conditioning (where single-supply operation and wide input range are critical), battery-powered handheld multimeters, and closed-loop position/speed control in motor drives. The on-chip MUX and sample-hold enable direct connection to bridge sensors, thermocouples via front-end amplification, and potentiometric transducers, while the serial interface simplifies isolated data acquisition.
When designing with the ADC12030CIWM, ensure the analog and digital grounds are joined only at one star-point beneath the ADC ground pin to avoid digital-noise coupling into the reference. Use a 0.1 uF ceramic bypass capacitor directly on AV+ and a 10 uF tantalum/ceramic bulk capacitor nearby. The reference voltage should be driven from a low-noise, low-drift source such as the TI REF5040 or REF02.
This page synthesizes distributor pricing, drop-in alternative MPNs from the same ADC12030 family, and practical PCB layout notes not collected in a single document elsewhere - an at-a-glance decision aid for engineers evaluating the ADC12030CIWM for new designs or as a replacement in legacy boards.
直接替换替代料： ADC12030CIWM ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADC12030CIWM （相同外形与封装尺寸） ——差异在于 Analog Supply Voltage, Architecture, Data Interface, Digital Supply Voltage, Package.
快速对比工具——选择替代料号进行并排对比：
ADC12030CIWM/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
ADC12030CIWMX
✅ 直接替换📋 参考替代料（不在目录中）
ADC12030CIWMX/NOPB
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.51 / 个
查看数据手册 →ADC12032CIWM
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADC12034CIWM
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADC12H030CIWM
✅ 直接替换📋 参考替代料（不在目录中）
ADC12030CIWM 最大额定值与电气特性
| 分辨率 | 12 bits + sign |
| Architecture | SAR (Successive Approximation Register) |
| Number of Input Channels | 1 or 2 (selectable) |
| Input Type | Differential, Pseudo-Differential, Single-Ended |
| 采样率 | 114 ksps (max) |
| Data Interface | SPI / QSPI / Microwire-compatible serial |
| Number of ADCs | 1 |
| Reference Type | External |
| Analog Supply Voltage | 5 V (typical) |
| Digital Supply Voltage | 5 V (or 3.3 V logic-compatible) |
| Self-Calibration | Yes (on-demand offset + linearity) |
| Sample-and-Hold | Internal (on-chip) |
| 工作温度范围 | -40 C to +85 C |
| 封装 | 16-pin SOIC Wide (SOIC-16W) |
| 安装类型 | Surface Mount |
| MSL 等级 | 2 (per JEDEC J-STD-020) |
ADC12030CIWM 引脚配置
| 引脚 1 | AV+ — Analog supply voltage (5 V) |
| 引脚 2 | MODE — Mode select (0 = 1-channel, 1 = 2-channel MUX) |
| 引脚 3 | CS — Chip select (active low) |
| 引脚 4 | DOUT — Serial data output |
| 引脚 5 | DIN — Serial data input (for self-calibrate command) |
| 引脚 6 | SCLK — Serial clock |
| 引脚 7 | DGND — Digital ground |
| 引脚 8 | DV+ — Digital supply voltage (5 V or 3.3 V logic-compatible) |
| 引脚 9 | VREF+ — External reference voltage positive input |
| 引脚 10 | VREF- — External reference voltage negative input (ground) |
| 引脚 11 | AGND — Analog ground |
| 引脚 12 | IN1+ — Analog input 1 positive (or CH1) |
| 引脚 13 | IN1- — Analog input 1 negative |
| 引脚 14 | IN2+ — Analog input 2 positive |
| 引脚 15 | IN2- — Analog input 2 negative |
| 引脚 16 | S/H — Sample-and-hold capacitor (external cap to AGND) |
典型应用
ADC12030CIWM 适用于 7 应用s: Industrial Process Control & PLC Analog Inputs, Portable Handheld Data Loggers & Multimeters, Automotive Sensor Signal Conditioning, Battery Monitoring & Power Conversion Telemetry, Closed-Loop Motor Control Position/Speed Feedback, Isolated Industrial Data Acquisition Modules, Medical & Lab Instrumentation Signal Acquisition.
Industrial Process Control & PLC Analog Inputs
The ADC12030CIWM fits industrial PLC and process-control analog input modules because its 12-bit+sign resolution and 114 ksps sample rate cover the typical 4-20 mA / 0-10 V / thermocouple / RTD signal-chain requirements after front-end conditioning. The integrated 2-channel MUX and sample-and-hold let one ADC service two sensor channels, halving board area versus discrete MUX+SAR solutions. The wide -40 C to +85 C operating range matches industrial cabinet environments, and the SPI interface is directly compatible with TI Tiva C, MSP430, and STM32 MCUs. Pin-compatible 4-channel (ADC12034CIWM) and 8-channel (ADC12038CIWM) variants enable channel-count scaling on the same PCB.
推荐
Portable Handheld Data Loggers & Multimeters
The ADC12030CIWM suits battery-powered handheld data loggers and digital multimeters because it draws only a few milliwatts during continuous conversion and drops to nanoamp-level standby when CS is held high, preserving battery life. The 12-bit+sign resolution with external reference supports accurate DC voltage, current, and temperature readings after front-end scaling, while the self-calibration command lets the meter re-trim at power-on for low total-error budgets. The 16-pin SOIC Wide package is hand-solderable for prototype meters. Pair the ADC with a low-dropout regulator (LP2985) and a precision op-amp (OPA2333) for a low-power analog front-end.
推荐
Automotive Sensor Signal Conditioning
The ADC12030CIWM is applicable to 12 V automotive sensor signal-conditioning modules for throttle position, pedal position, manifold absolute pressure (MAP), and temperature sensors, where its -40 C to +85 C industrial operating range, single +5 V supply, and SPI interface simplify board design. The function integrates a 2-channel MUX and sample-and-hold so two sensors can share one ADC, and the differential input capability rejects ground-shift noise from long sensor harnesses. For under-hood applications requiring 125 C operation, choose the AEC-Q100-qualified ADS8860 in MSOP-8 instead; the ADC12030 family is not AEC-Q100-qualified but works for cabin and body-electronics modules.
推荐
Battery Monitoring & Power Conversion Telemetry
The ADC12030CIWM works well in battery monitoring and power-conversion telemetry boards where it digitizes cell voltage, current-sense amplifier output, and temperature sensor readings from a battery-management front end. The 12-bit+sign resolution provides ~1 mV LSB at a 5 V reference, which is sufficient for 12 V / 24 V lead-acid and multi-cell Li-ion monitoring. The wide ±VREF differential input range supports direct connection to bidirectional current-sense outputs. A single SPI bus can daisy-chain multiple ADC12030 devices for multi-cell battery stacks, simplifying isolation and reducing MCU pin count.
推荐
Closed-Loop Motor Control Position/Speed Feedback
The ADC12030CIWM is a fit for closed-loop motor control boards that digitize encoder feedback, potentiometer wiper voltage, or analog Hall-sensor output for position/speed control loops. Its 114 ksps sample rate is more than adequate for 50-500 Hz control loops, and the self-calibration command corrects offset drift that would otherwise appear as motor bias. The integrated 2-channel MUX supports a dual-sensor redundancy architecture required by some functional-safety standards. Pair with a TI C2000 Delfino or Piccolo MCU for high-performance FOC and a DRV8313 motor driver.
推荐
Isolated Industrial Data Acquisition Modules
The ADC12030CIWM is well-suited for isolated industrial data acquisition modules where the serial (SPI) interface crosses an isolation barrier via digital isolators such as ISO7240/ISO7640/ISO7741. The low SPI pin count (SCLK, DOUT, DIN, CS) keeps isolator channel count low, reducing isolation BOM cost. The integrated 2-channel MUX provides 2 isolated analog inputs per ADC, and the self-calibration command corrects for ADC offset drift across the operating temperature range. The wide ±VREF differential input handles 4-20 mA current-loop receivers with appropriate shunt resistors and front-end protection.
推荐
Medical & Lab Instrumentation Signal Acquisition
The ADC12030CIWM applies to medical and laboratory instrumentation such as benchtop multimeters, spectrophotometers, and analytical instrument signal chains where the 12-bit+sign resolution delivers ~1 mV LSB at 5 V full-scale and the self-calibration command corrects drift between measurements. The wide common-mode input range in differential mode rejects ground-shift noise from patient-connected or bench instrumentation. The SPI interface simplifies connection to ARM Cortex-M MCUs used in portable medical devices, and the -40 C to +85 C range covers laboratory environments. The 16-pin SOIC Wide package is hand-solderable for prototype builds.
推荐
推荐产品汇总
工程参考数据： ADC12030CIWM ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADC12030CIWM/NOPB | ADC12030CIWMX | ADC12030CIWMX/NOPB | ADC12032CIWM | ADC12034CIWM | ADC12H030CIWM |
|---|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 16-SOIC Wide (SOIC-16W) | 16-SOIC Wide (SOIC-16W) - same | 16-SOIC Wide (SOIC-16W) - same | 16-SOIC Wide (SOIC-16W) - same | 16-SOIC Wide (SOIC-16W) - same | 16-SOIC Wide (SOIC-16W) - same | 16-SOIC Wide (SOIC-16W) - same |
| Resolution | 12 bits + sign | 12 bits + sign | 12 bits + sign | 12 bits + sign | 12 bits + sign | 12 bits + sign | 12 bits (no sign) |
| Number of Input Channels | 1 or 2 | 1 or 2 | 1 or 2 | 1 or 2 | 2 | 4 | 1 or 2 |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR | SAR |
| Reference Type | External | External | External | External | External | External | External |
| Self-Calibration | Yes (on-demand) | Yes | Yes | Yes | Yes | Yes | Yes |
关键差异点
- Same die as the Pb-free variant with full RoHS compliance （对比 ADC12030CIWM/NOPB)
- 2-channel MUX integrated on-chip saves board area （对比 ADC12H030CIWM (single-channel variant))
- Drop-in upgrade path to 4-channel and 8-channel MUX variants （对比 ADC12034CIWM and ADC12038CIWM)
设计说明
Place a 0.1 uF ceramic bypass capacitor as close as possible to the AV+ pin (pin 1) and a separate 0.1 uF ceramic on the DV+ pin (pin 8), with a shared 10 uF bulk tantalum or ceramic capacitor serving both rails. Connect AGND and DGND only at one star-point beneath the ADC ground pins to prevent digital switching noise from coupling into the analog reference. Keep the VREF traces short and guarded with AGND on both sides to minimize reference noise pickup.
According to the TI datasheet, the VREF pin (pin 9) must be driven from a low-noise, low-drift source such as the REF5040 (4.096 V, 3 uVpp noise, 5 ppm/C drift). Reference noise appears directly at the ADC output as code-edge flicker; a noisy 5 V supply ratiometric to VREF will degrade SNR and DNL. For 12-bit performance, the source impedance of the reference must be below 1 ohm at the ADC reference pin; an op-amp buffer (e.g. OPA2333) may be needed if the reference cannot drive this directly.
Do not connect the analog inputs (IN1+, IN1-, IN2+, IN2-) to signals that exceed AV+ or fall below AGND, even by 0.3 V - the ESD diodes will forward-conduct and distort the conversion. The external sample-and-hold capacitor on pin 16 (S/H) must be a low-leakage C0G/NP0 ceramic (typically 470 pF) and must not be omitted or replaced with a polarized electrolytic. Finally, issue the on-demand self-calibration command (per datasheet section 'Self-Calibration') after power-up, after every VREF change, and after large temperature excursions (>20 C) to maintain specified linearity.
Estimated: at AV+ = DV+ = 5 V and continuous 114 ksps conversion, the ADC12030CIWM draws approximately 8-12 mW based on the TI datasheet typical characteristics. In standby (CS high) current drops to the nanoamp range, making the part suitable for battery-powered designs. If powering from a noisy 12 V or 24 V industrial rail, use a wide-Vin LDO (TPS7A4001) or a small isolated DC/DC module (e.g. LM5163) to provide clean 5 V analog and digital rails; ripple below 10 mVpp is recommended for 12-bit performance.
Route the SPI signals (SCLK, DOUT, DIN, CS) as a bus with ground guard traces and keep them physically separated from the analog input traces. If the SPI bus must cross isolation barriers (ISO7741), use a single quad-channel isolator on the SPI bundle and avoid splitting across multiple isolators to prevent ground-loop noise. Place the MCU on the digital side of the isolator and keep analog traces away from the isolator to avoid capacitive coupling of the isolator's digital edges into the analog front end.
合规信息
The non-NOPB ADC12030CIWM is the legacy SnPb-finished variant; the /NOPB variant is Pb-free and RoHS-compliant per TI product numbering convention. Confirm exact RoHS/REACH status from the TI product page before shipping to RoHS-regulated markets. ADC12030 family is industrial-grade only - not AEC-Q100 qualified for automotive applications; for AEC-Q100 upgrade see ADS8860 in MSOP-8.
