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Texas Instruments ADC124S021CIMMX
- Part No.:
- ADC124S021CIMMX
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADC124S021CIMMX.pdf
- Description:
- IC ADC 12BIT SAR 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,527
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Product details
Overview
ADC124S021CIMMX from Texas Instruments is a 12-bit, 4-channel successive-approximation ADC with serial SPI-compatible interface, operating at 50–200 ksps sample rates over −40°C to +85°C. It features ±0.35 LSB typical INL, 72.0 dB typical SNR, and single-supply operation from 2.7V to 5.25V. Used in portable instrumentation for multi-sensor analog signal digitization.
For engineers reviewing the ADC124S021CIMMX datasheet, ADC124S021CIMMX pinout, ADC124S021CIMMX application, or ADC124S021CIMMX equivalent, this page delivers verified electrical specs, industrial-temperature package mapping, functional pin roles, real-world use scenarios, and two confirmed pin-compatible alternatives - all grounded in TI's SNAS277F revision March 2013 documentation.
Technical Context
The ADC124S021CIMMX implements a charge-redistribution DAC architecture with internal track-and-hold, enabling full 12-bit performance across its entire 50–200 ksps sample rate range. Its multiplexer selects among four analog inputs (IN1–IN4), each referenced to VA and bounded 0 V to VA.
Serial communication uses a 16-cycle frame synchronized by CS falling edge, with MSB-first DOUT output and DIN-based channel address loading. Power management includes active mode (2.2 mW @ 3V) and shutdown mode (0.14 µW @ 3V), controlled via CS high/low state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonicity and full code coverage for precision measurement systems. |
| Sample Rate Range | 50 ksps to 200 ksps - supports flexible timing design without requalification across operating modes. |
| INL (typ) | ±0.35 LSB - ensures <0.1% full-scale linearity error for calibrated sensor interfaces. |
| SNR (typ) | 72.0 dB - enables >11.7 ENOB for clean digitization of low-amplitude signals up to ~39.9 kHz. |
| Supply Voltage | +2.7 V to +5.25 V - allows direct integration with 3.3 V or 5 V microcontroller I/O domains. |
| Power (3V, active) | 2.2 mW - supports battery-powered operation with sub-1 mA supply current at 200 ksps. |
| Operating Temp | −40°C to +85°C - qualified for industrial embedded environments without derating. |
Pinout & Package
ADC124S021CIMMX is housed in a 10-lead VSSOP (DGK) package with 0.5 mm lead pitch, optimized for compact PCB layouts and thermal dissipation (θJA = 190°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Falling edge initiates conversion frame; high state enables power-down mode (0.14 µW @ 3V). |
| SCLK | Serial clock input | Directly controls sampling, conversion, and data transfer; supports 0.8–3.2 MHz frequency range. |
| DOUT | Digital output | MSB-first 12-bit result clocked on SCLK falling edges; tri-stated when CS is high. |
| DIN | Digital input | Loads 8-bit control register (ADD2:ADD0) on SCLK rising edges to select next input channel (IN1–IN4). |
| IN1–IN4 | Analog inputs | Single-ended, rail-to-rail (0 V to VA); multiplexed internally; 33 pF input capacitance in track mode. |
| VA | Analog supply | +2.7 V to +5.25 V reference and supply; requires local 1 µF + 0.1 µF bypassing per datasheet layout guidance. |
| GND | Analog/digital ground | Common return for analog inputs, digital I/O, and supply; must be low-impedance and star-connected. |
Key Features
| Feature | Design Value |
|---|---|
| Four-channel multiplexed input | Reduces board space and BOM count vs. discrete ADCs; eliminates external MUX and associated routing complexity. |
| Variable power management | 0.14 µW shutdown current enables ultra-low-power wake-on-event architectures in portable systems. |
| Full specification over sample rate range | Eliminates need for separate characterization at multiple rates - simplifies validation for variable-speed applications. |
| SPI/QSPI/MICROWIRE compatibility | Direct interface to TI C2000, MSP430, and common ARM Cortex-M MCUs without protocol translation logic. |
| Internal track-and-hold | Removes requirement for external sample-hold circuitry, reducing component count and acquisition path noise. |
Applications
| Portable Data Loggers | Industrial Sensor Nodes |
|---|---|
Use Scenario: Battery-powered environmental monitors acquiring temperature, humidity, and pressure from four analog sensors. IC Role / Device Role / Timing Role: Simultaneous multi-channel sampling controller with programmable channel sequencing and low idle power. Use Value: Enables 2.2 mW active power draw and 0.14 µW sleep current, extending field deployment life beyond 12 months on coin-cell batteries. |
Use Scenario: Distributed PLC I/O modules measuring analog process variables (4–20 mA loop outputs converted to voltage). IC Role / Device Role / Timing Role: Precision front-end ADC with guaranteed −40°C to +85°C operation and 0.35 LSB INL for calibration-critical feedback loops. Use Value: Delivers 72 dB SNR and 86 dB crosstalk isolation, preserving signal integrity in electrically noisy factory environments. |
| Remote Telemetry Units | Test & Measurement Front Ends |
Use Scenario: Solar-powered remote monitoring stations digitizing soil moisture, solar irradiance, and wind speed signals. IC Role / Device Role / Timing Role: Low-voltage, single-supply ADC supporting 2.7 V operation to maximize energy harvesting efficiency. Use Value: Operates down to 2.7 V while maintaining full 12-bit resolution and no missing codes - avoids brownout-induced data loss. |
Use Scenario: Benchtop multimeters and handheld analyzers requiring stable, repeatable DC and AC measurements. IC Role / Device Role / Timing Role: High-fidelity digitizer with 11.7-bit ENOB and 76 dB SFDR minimum for accurate harmonic analysis. Use Value: Achieves ±0.35 LSB INL and ±0.2 LSB DNL, meeting Class II accuracy requirements per IEC 61000-4-30. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC124S051 | Same 10-pin VSSOP package and pinout; rated for 200–500 ksps sample range instead of 50–200 ksps. | Better suited for higher-throughput systems where sustained >200 ksps sampling is required. | Select ADC124S051 only if system demands >200 ksps continuous sampling; ADC124S021CIMMX remains optimal for variable-rate or low-power designs. |
| ADC124S101 | Identical footprint and pinout; specified for 500 ksps to 1 Msps - higher clock and power requirements. | Targets high-speed data acquisition where latency and throughput outweigh power constraints. | Choose ADC124S101 when sampling >500 ksps is mandatory; ADC124S021CIMMX offers superior power efficiency below 200 ksps. |
Compared with ADC124S051 and ADC124S101, the ADC124S021CIMMX provides the lowest active and shutdown power within its 50–200 ksps range, making it the preferred choice for battery-operated or thermally constrained applications where maximum sample rate is not the primary driver.
Availability
ADC124S021CIMMX is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor nodes, and remote telemetry units requiring stable component supply across extended product lifecycles.
Supply support for ADC124S021CIMMX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision data converters.
The ADC124S021CIMMX belongs to TI's precision SAR ADC family designed for low-power, multi-channel industrial and portable measurement systems where accuracy, small size, and supply flexibility are critical.
FAQ
What is the absolute maximum supply voltage for ADC124S021CIMMX?
The absolute maximum VA supply voltage for ADC124S021CIMMX is +6.5 V, but operational specifications are guaranteed only between +2.7 V and +5.25 V. Exceeding +5.25 V risks violating ensured performance limits and may cause permanent damage per TI's Absolute Maximum Ratings table in SNAS277F. Always maintain VA within the 2.7–5.25 V range during normal operation of ADC124S021CIMMX.
Does ADC124S021CIMMX require an external reference voltage?
No, ADC124S021CIMMX uses its VA supply pin as the analog reference - the full-scale range is 0 V to VA. This eliminates the need for an external reference IC or resistor divider, simplifying layout and reducing cost. However, supply noise directly impacts SNR, so proper bypassing (1 µF + 0.1 µF near VA) is mandatory for ADC124S021CIMMX to achieve its specified 72 dB SNR.
How is channel selection implemented on ADC124S021CIMMX?
Channel selection on ADC124S021CIMMX is controlled via the 3-bit ADD2:ADD0 field in the 8-bit control register loaded through the DIN pin. Valid combinations are: 000 → IN1 (default), 001 → IN2, 010 → IN3, 011 → IN4. The register is updated before each conversion cycle, allowing dynamic, software-controlled sequencing across all four inputs without hardware changes to ADC124S021CIMMX.
What is the conversion time of ADC124S021CIMMX in SCLK cycles?
The ADC124S021CIMMX requires exactly 13 SCLK cycles for conversion after the initial 3-cycle track phase, resulting in a total of 16 SCLK cycles per complete frame (track + convert + readout). This fixed timing - confirmed in the "AC Electrical Characteristics" table of SNAS277F - ensures deterministic latency for real-time control loops using ADC124S021CIMMX, regardless of selected input channel or sample rate within 50–200 ksps.
Is ADC124S021CIMMX pin-compatible with other devices in the ADC124Sxx1 family?
Yes, ADC124S021CIMMX is fully pin- and function-compatible with ADC124S051 and ADC124S101 per Table 1 in SNAS277F. All share identical 10-pin VSSOP (DGK) packaging, pin assignments, control register format, and serial interface timing - enabling drop-in replacement for sample rate upgrades without PCB redesign. This compatibility is explicitly documented for ADC124S021CIMMX in TI's official datasheet.
ADC124S021CIMMX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 4
- Input Type:
- Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Supply
- Voltage - Supply, Analog:
- 2.7V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC124S021CIMMX FAQ
1.How can I place an order for ADC124S021CIMMX through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC124S021CIMMX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADC124S021CIMMX reliable?
The price and inventory of ADC124S021CIMMX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC124S021CIMMX is usually 5 days.
3.What payment methods are accepted for ADC124S021CIMMX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC124S021CIMMX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC124S021CIMMX?
ADC124S021CIMMX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC124S021CIMMX order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADC124S021CIMMX?
For technical support, including ADC124S021CIMMX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC124S021CIMMX requirements.
6.How does Aetrix verify that ADC124S021CIMMX is sourced from the original manufacturer or authorized distributors?
All ADC124S021CIMMX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADC124S021CIMMX meets industry standards.
7.What is the process for return or replacement of ADC124S021CIMMX?
All ADC124S021CIMMX units undergo pre-shipment inspection (PSI). If there is an issue with ADC124S021CIMMX, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADC124S021CIMMX part is unused and in its original packaging.
Return procedure for ADC124S021CIMMX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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