ADC124S051CIMM - 4-Ch 12-Bit 500kSPS SAR ADC | Texas Instruments
MPN: ADC124S051CIMM ✗ اختتامِ زندگیADC124S051CIMM جائزہ
What is a SAR ADC? A successive-approximation-register analog-to-digital converter is a precision data converter that resolves a sampled analog input one bit per clock cycle against an internal DAC and comparator. In the broader taxonomy, the ADC124S051 belongs to the SAR ADC family, which sits within successive-approximation ADCs, data converters, signal-chain ICs, and finally the semiconductor category. SAR ADCs are prized for deterministic latency, low power, and excellent DC accuracy, which is why they dominate multiplexed low-channel-count instrumentation, sensor readouts, and embedded control applications.
Key features of this device include a true-differential input pair (CH1+/CH1-, CH2+/CH2-) configured as four pseudo-differential single-ended channels, an external reference input (VREF, 1V to VDD), a hardware-/software-shutdown pin (SHDN) that drops quiescent current to 0.06 µA, and pin-compatible scaling from 8-bit (ADC084S051) to 12-bit (ADC124S051). The part operates from -40°C to +85°C and ships in the miniature 10-pin VSSOP package that fits on a 3 mm × 3 mm land pattern.
Architecturally, the device combines an on-chip sample-and-hold amplifier, a charge-redistribution SAR core, an internal oscillator, and an SPI-compatible serial output. The factory-trimmed internal reference is not used here; an external 2.5 V reference is typical. Latency is one conversion clock period, which simplifies digital control loops that need deterministic sampling.
Typical applications include portable patient monitors, industrial multi-sensor modules, factory automation backplanes, battery-management telemetry, optical-module monitoring, and 4-20 mA loop digitizers. Pairing the ADC124S051 with an external 2.5 V reference such as the TI REF3025 and an op-amp driver such as the OPA2333 delivers 12-bit accurate readings across a -40°C to +85°C industrial envelope.
A practical design tip: route the VREF trace as a guard trace and place the 10 µF plus 0.1 µF decoupling combination within 5 mm of the VREF pin. Avoid switching the analog multiplexer into a >0.4 µF charged capacitive load directly to minimize kickback errors. If mid-scale accuracy at 500 kSPS matters more than full-rate throughput, dithering the input by one LSB reduces noise-folded errors.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes that go beyond the manufacturer's datasheet and are not aggregated on competing distributor listings.
کے لیے ڈراپ اِن متبادل ADC124S051CIMM — 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 ADC124S051CIMM (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Architecture, Digital Interface, Input Type, Number of Channels.
ADC124S051CIMM/NOPB
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ADC084S051CIMM
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ADC124S021CIMMX
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ADC122S101CIMM
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ADS7841E
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →MCP3204-CI/MS
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ADC124S051CIMM زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| ریزولوشن | 12 bit |
| Sample Rate | 200 kSPS to 500 kSPS |
| Number of Channels | 4 |
| Input Type | Single-Ended (4 pseudo-differential pairs) |
| Architecture | SAR (Successive Approximation) |
| سپلائی وولٹیج | 2.7 V to 5.25 V (single supply) |
| Analog Supply Current at 200 kSPS | 1.55 mW total (typ) |
| شٹ ڈاؤن کرنٹ | 0.06 µA (typ) |
| External Reference Voltage | 1 V to VDD (typ 2.5 V) |
| Digital Interface | SPI / QSPI / MICROWIRE-compatible |
| آپریٹنگ درجہ حرارت رینج | -40 °C to +85 °C |
| پیکیج | 10-pin VSSOP (DGS) 3 mm × 3 mm |
| ماؤنٹنگ ٹائپ | Surface Mount |
| MSL لیول | 1 (unlimited) |
| RoHS اسٹیٹس | Compliant |
| Pin Compatibility | Pin-compatible with ADC084S051 (8-bit) and ADC124S021 (lower speed) |
ADC124S051CIMM پن کنفیگریشن
| پن 1 | AIN1+ / AIN1 — Analog input channel 1 (positive or single-ended) |
| پن 2 | AIN1- — Analog input channel 1 negative (pseudo-differential) |
| پن 3 | AIN2+ / AIN2 — Analog input channel 2 (positive or single-ended) |
| پن 4 | AIN2- — Analog input channel 2 negative (pseudo-differential) |
| پن 5 | SHDN — Hardware shutdown (active low; tie to VA to enable) |
| پن 6 | VA — Analog supply voltage (2.7 V to 5.25 V) |
| پن 7 | GND — Ground |
| پن 8 | VREF — External reference voltage input (1 V to VDD) |
| پن 9 | DOUT — Serial data output (SPI MOSI; functions as DRDY# when CS# is held high) |
| پن 10 | CS# — Active-low chip select for SPI interface |
عام استعمالات
ADC124S051CIMM کے لیے موزوں ہے 7 ایپلیکیشنs: Portable Patient Monitoring (SpO2 / ECG Telemetry), Industrial Multi-Sensor Module (PLC / 4-20 mA Digitizer), Optical Module Monitoring (SFP / QSFP Transceivers), Battery Management Telemetry (BMS Cell Monitor), Factory Automation Backplane (Sensor Hub / Edge Node), Multi-Channel Data Acquisition Card (USB / PC-Based DAQ), IoT Sensor Node (Smart Building / HVAC).
Portable Patient Monitoring (SpO2 / ECG Telemetry)
The ADC124S051's 4-channel input is ideal for multi-lead patient-monitoring front ends where 4 sensors (SpO2, respiration, ECG, temperature) must be digitized from a single battery rail. At 200 kSPS aggregate across 4 channels (50 kSPS per channel), 12-bit resolution is sufficient for IEC 60601-1-8 clinical-grade SpO2 desaturation detection. The 1.55 mW power at 200 kSPS keeps total board draw below 5 mW, and the 0.06 µA shutdown mode preserves battery life between readings - critical for wearable 5-day telemetry patches.
تجویز کردہ
Industrial Multi-Sensor Module (PLC / 4-20 mA Digitizer)
Industrial PLCs and remote I/O modules need 4-20 mA loop digitizers at 12-bit accuracy. The ADC124S051CIMM provides 4 single-ended inputs at 500 kSPS, allowing simultaneous digitizing of 4 loop currents at 125 kSPS each - well above the 100 Hz bandwidth required for process control. Pair the part with an external 2.5 V reference (TI REF3025) and a current-sense amplifier such as the INA240 to digitize ground-referenced 4-20 mA loops. The 10-VSSOP footprint and -40°C to +85°C rating fit compact DIN-rail modules.
تجویز کردہ
Optical Module Monitoring (SFP / QSFP Transceivers)
SFP and QSFP optical transceivers require monitoring of 4-6 analog signals: TX bias, TX power, RX power, and temperature. The ADC124S051CIMM digitizes 4 of these via its 4 single-ended channels at 200-500 kSPS, providing 12-bit accuracy for the 0.1 dB laser-power reporting required by SFF-8472. With a single 3.3V supply and 1.55 mW dissipation, it slots into the module's tight power budget. The shutdown pin enables <1 µA standby, vital for host-side power of sleeping optical links.
تجویز کردہ
Battery Management Telemetry (BMS Cell Monitor)
Battery management systems digitize cell voltages, pack current, and temperature at 12-bit resolution. The ADC124S051CIMM's 4 channels can monitor 4 cell voltages at 100 kSPS aggregate, providing 12-bit (1.2 mV at 4.096 V reference) accuracy - sufficient for cell balancing decisions. The 0.06 µA shutdown mode preserves quiescent current during sleep, critical for long-storage battery packs. Pin-compatible with TI's BMS-focused ADC family for migration to higher-resolution or higher-channel devices in future generations.
تجویز کردہ
Factory Automation Backplane (Sensor Hub / Edge Node)
Industrial edge nodes aggregate 4 analog sensor inputs - temperature, pressure, humidity, and flow - over a 4-20 mA or 0-10V interface. The ADC124S051CIMM digitizes all 4 at 12-bit/500 kSPS, supporting deterministic 100 µs conversion cycles per channel needed for closed-loop control. Its single 5V supply simplifies field-side power design, and the VSSOP-10 footprint allows the digitizer to sit adjacent to each input connector. Pair with an RS-485 transceiver (such as TI ISO3086) for isolated backplane communication.
تجویز کردہ
Multi-Channel Data Acquisition Card (USB / PC-Based DAQ)
PC-based data acquisition cards require 4-8 simultaneous-monitor analog inputs at 12-bit resolution and >100 kSPS aggregate. The ADC124S051CIMM delivers 4 channels at 500 kSPS, supporting continuous streaming to a host MCU or FPGA over SPI. Its 0.06 µA shutdown mode enables burst-mode acquisition that keeps average power below 100 µW. Common configurations pair four ADC124S051s in parallel for a 16-channel DAQ card, all sharing the same 10-VSSOP footprint for layout uniformity.
تجویز کردہ
IoT Sensor Node (Smart Building / HVAC)
Smart-building HVAC and IoT sensor nodes aggregate 4 analog signals - temperature, humidity, light, and gas - over a single ADC. The ADC124S051CIMM at 200 kSPS provides 50 kSPS per channel, which is more than sufficient for 10 Hz environmental monitoring. Its 1.55 mW typical power enables multi-year battery life on coin cells when paired with duty-cycled sampling and the 0.06 µA shutdown mode. The 10-VSSOP package is small enough to fit alongside a wireless MCU like the CC2640 in a 25 mm × 25 mm sensor beacon.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا ADC124S051CIMM — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | ADC124S051CIMM/NOPB | ADC084S051CIMM | ADC124S021CIMMX | ADC122S101CIMM | ADS7841E | MCP3204-CI/MS |
|---|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology |
| Package | VSSOP-10 (DGS) | VSSOP-10 (DGS) - same | VSSOP-10 (DGS) - same | VSSOP-10 (DGS) - same | VSSOP-10 (DGS) - same | VSSOP-10 (DGS) - same | MSOP-10 - same footprint family |
| Resolution | 12 bit | 12 bit | 8 bit (-33%) | 12 bit | 12 bit | 12 bit | 12 bit |
| Maximum Sample Rate | 500 kSPS | 500 kSPS | 500 kSPS | 50 kSPS (-90%) | 500 kSPS | 200 kSPS (-60%) | 100 kSPS (-80%) |
| Number of Channels | 4 | 4 | 4 | 4 | 2 (-50%) | 4 | 4 |
| Supply Voltage | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.0 V | 2.7 V to 5.5 V |
| Lifecycle Status | Obsolete | Active (lead-free variant) | Obsolete | Active | Active | Active | Active |
| SPI Frame Format | 12-bit two-byte MSB-first | Identical 12-bit two-byte MSB-first | 8-bit one-byte (different length) | Identical 12-bit two-byte MSB-first | Identical 12-bit two-byte MSB-first | 12-bit two-byte MSB-first (frame timing differs) | 12-bit two-byte MSB-first (one extra SCLK) |
| Approximate Unit Price (qty 100) | USD 5.20 | USD 4.95 | USD 4.20 | USD 3.80 | USD 4.60 | USD 5.10 | USD 4.40 |
اہم امتیازی خصوصیات
- Pin-compatible migration path across resolution and speed grades (بمقابلہMicrochip MCP3204-CI/MS)
- Lowest quiescent shutdown current in its class (بمقابلہMCP3204-CI/MS)
- Single-supply 2.7 V to 5.25 V with no level shifter required (بمقابلہADS7841E)
- Active lead-free variant available on same die (بمقابلہMCP3204-CI/MS)
ڈیزائن نوٹس
Power-supply decoupling: place a 10 µF tantalum (or 4.7 µF X7R ceramic) plus a 0.1 µF ceramic within 5 mm of the VA pin to suppress the high-frequency switching noise of the SAR ADC's internal charge pump. The 1.55 mW typical at 200 kSPS means 3.3V × 470 µA, and bypassing that ripple with a ferrite bead on the VA trace is recommended for noise-sensitive multi-channel boards. The SHDN pin drops quiescent current to 0.06 µA when pulled low - use a 10 kΩ pull-down for failsafe.
VREF trace routing: route the external reference trace as a guard trace with a ground-fill on both sides, keeping the trace length under 10 mm. Place the 10 µF + 0.1 µF VREF decoupling directly at the pin. Route AIN1+ and AIN1- as a matched pair (length-matched within 2 mm) and keep them on the analog layer with a continuous ground plane underneath. The DOUT trace should be routed away from analog inputs to avoid digital-to-analog coupling.
Input kickback and multiplexer crosstalk: the SAR ADC's internal sample-and-hold capacitor (~20 pF) charges from the analog input on every conversion, injecting a small kickback spike. Avoid driving the analog inputs from high-impedance sources (>10 kΩ) without an input buffer such as the OPA2333 - a series RC of 50 Ω + 100 pF at each input can dampen the kickback if a buffer is unavailable. For multi-channel scanning, allow at least one full conversion cycle between channel switches for settling to 12-bit accuracy.
Common pitfalls: (1) Do not leave SHDN floating - it must be tied high to VA via a pull-up or driven by the MCU; floating SHDN leaves the part in indeterminate state. (2) Do not exceed the maximum VREF rating (VDD) - reference voltages above VA damage the input ESD structure. (3) Do not apply analog inputs before VA is powered up - the input ESD clamp draws current through the analog input. (4) The CS# pin must be held low for the entire conversion to avoid premature DOUT transitions.
تعمیل کی معلومات
ADC124S051CIMM (non-NOPB) is lead-bearing for legacy applications; the /NOPB suffix is the lead-free RoHS-compliant variant. Not AEC-Q100 qualified - for automotive applications use AEC-Q100-qualified SAR ADCs in TI's automotive portfolio.
