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Texas Instruments ADC12130CIWM
- Part No.:
- ADC12130CIWM
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADC12130CIWM.pdf
- Description:
- IC ADC 12BIT SAR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,917
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Product details
Overview
ADC12130CIWM from Texas Instruments is a self-calibrating 12-bit plus sign successive approximation ADC with integrated 2-channel analog multiplexer, serial MICROWIRE/SPI/QSPI interface, and on-chip sample/hold. It delivers 8.8 μs max conversion time, ±2 LSB integral linearity error, and operates from single 3.3V or 5V supply - used in pen-based computers and GPS receivers for high-accuracy analog signal digitization.
For engineers reviewing the ADC12130CIWM datasheet, ADC12130CIWM pinout, ADC12130CIWM application, or ADC12130CIWM equivalent, key selection considerations include its programmable acquisition time (6–34 tCK), 12-bit + sign output format supporting differential/pseudo-differential modes, power-down current of 40 μW (3.3V), and compatibility with LM4040/LM4050 voltage references.
Technical Context
The ADC12130CIWM implements a successive approximation register (SAR) architecture with internal self-calibration that corrects zero, full-scale, and linearity errors to ≤±1 LSB each. Its 2-channel MUX supports channel selection via serial DI input and enables pseudo-differential or single-ended configurations using COM pin.
Serial communication follows MICROWIRE timing with CS-controlled frame synchronization, EOC-driven status signaling, and DOR-gated data readout. Conversion clock (CCLK) and serial clock (SCLK) are independent, allowing flexible timing control - CCLK sets acquisition/conversion intervals (5 MHz max), while SCLK governs I/O transfer rate (5 MHz max).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit plus sign - delivers signed 13-bit output word (DB0–DB12), enabling true bipolar measurement without external level-shifting. |
| Conversion Time | 8.8 μs (max) - defines minimum sampling interval for real-time systems requiring ≥114 kSPS sustained throughput. |
| Integral Linearity Error | ±2 LSB (max) - ensures monotonicity and <0.05% FSR nonlinearity after self-calibration, critical for precision sensor interfaces. |
| Supply Voltage | +3.3V or +5V ±10% - dual-voltage support simplifies integration into mixed-supply industrial or portable systems. |
| Power Consumption | 15 mW (3.3V, active), 40 μW (3.3V, power-down) - enables battery-operated digitizers with low-duty-cycle sampling. |
| Analog Input Range | 0 V to 5 V unipolar (single 5V supply) - accommodates standard sensor outputs without external amplification or biasing. |
| Multiplexer Type | 2-channel configurable MUX - allows dynamic selection between CH0/CH1 inputs or pseudo-differential mode using COM pin. |
Pinout & Package
ADC12130CIWM uses a 20-pin SSOP package (Package Number NFG0020A per TI documentation), with thermal resistance θJA = 70°C/W. Pin functions are validated per SNAS098G Rev. G datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0, CH1 | Analog multiplexer inputs | Selectable channels; voltage must stay within GND −5V to VA+ +5V to avoid damage, but valid conversion requires 0V to VA+ range. |
| COM | Pseudo-ground reference | Enables pseudo-differential mode when tied to common-mode point; required for single-ended operation with CH0/CH1. |
| A/DIN1, A/DIN2 | ADC converter inputs | Accept differential or single-ended signals; internally connected to MUXOUT1/MUXOUT2 in ADC12130; tolerate 0V to VA+. |
| DO, DI, SCLK, CS, CONV, EOC, DOR | Serial interface & control | MICROWIRE-compatible I/O: DO outputs 13-bit result on falling SCLK; CS enables frame sync; EOC signals conversion completion. |
| VREF+, VREF− | Reference voltage inputs | Support 1.0–5.0 V reference span; VREF− must be ≥ GND and ≤ VREF+ −1V; bypassing required per Figure 63. |
| VA+, VD+, AGND, DGND | Power & ground | Separate analog/digital supplies (VA+, VD+) must be tied to same rail but bypassed independently; |VA+ − VD+| ≤ 100 mV. |
| PD | Power-down control | High = power-down mode (40 μW @ 3.3V); low = active; 700 μs wake-up time required before first valid conversion. |
Key Features
| Feature | Design Value |
|---|---|
| Self-calibration | Automatically corrects offset, full-scale, and linearity errors to ≤±1 LSB each - eliminates manual trimming and improves long-term stability. |
| Programmable acquisition time | Configurable via serial command: 6, 10, 18, or 34 CCLK cycles - balances speed vs. settling accuracy for varying source impedances. |
| 12-bit plus sign output format | 13-bit signed word (DB0–DB12) enables seamless bipolar measurement (e.g., ±2.5V) with unipolar 0–5V supply - no external op-amp needed. |
| Multi-standard serial interface | Native MICROWIRE timing with SPI/QSPI compatibility - interoperates with common microcontroller peripherals without protocol translation. |
| No zero/full-scale adjustment | Factory-trimmed and self-calibrating design removes need for external potentiometers or calibration routines during production test. |
Applications
| Pen-Based Computing | GPS Receiver Front-End |
|---|---|
|
Use Scenario: Digitizing analog voltage from resistive touch overlay or stylus tip position sensing circuitry. IC Role / Device Role / Timing Role: ADC12130CIWM performs high-speed, low-noise sampling of X/Y coordinate signals with 12-bit + sign resolution. Use Value: 8.8 μs conversion time supports >114 kSPS sampling, enabling responsive handwriting capture without motion blur. |
Use Scenario: Converting IF or baseband analog signals from GPS RF front-end before digital correlation and position calculation. IC Role / Device Role / Timing Role: ADC12130CIWM digitizes differential GPS antenna signals with 77 dB SNR at 1 kHz in fully differential mode. Use Value: ±2 LSB INL and 40 kHz full-power bandwidth preserve signal integrity for precise carrier-phase tracking. |
| Digitizer Tablet Interface | Industrial Sensor Data Acquisition |
|
Use Scenario: Reading analog outputs from multiple pressure, temperature, or proximity sensors in a multi-point digitizer system. IC Role / Device Role / Timing Role: ADC12130CIWM's 2-channel MUX selects between sensor pairs; programmable acquisition time adapts to RC time constants. Use Value: Channel-to-channel matching of ±0.05 LSB ensures consistent gain/offset across sensor inputs for calibrated multi-sensor fusion. |
Use Scenario: Monitoring analog process variables (e.g., 4–20 mA loop outputs converted to voltage) in PLC or RTU modules. IC Role / Device Role / Timing Role: ADC12130CIWM operates in single-supply 3.3V mode with 15 mW active power, reducing thermal load in sealed enclosures. Use Value: Power-down mode draws only 40 μW - extends uptime in battery-backed data loggers during idle periods. |
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 |
|---|---|---|---|
| ADS7822IP | 8-bit, 200 kSPS, SPI-only, no MUX, no self-cal - smaller die, lower cost, no sign bit. | Lower resolution limits use in precision GPS or pen computing; suitable for basic sensor monitoring where speed > accuracy. | Select ADS7822IP only if 8-bit resolution suffices and MUX/calibration are unnecessary - not drop-in compatible. |
| ADS8320EB | 16-bit, 100 kSPS, SPI, no MUX, external reference required - higher resolution, slower, no on-chip calibration. | Better INL (±1 LSB) and SNR (86 dB) suit metrology-grade systems; lacks MUX and self-cal, increasing BOM and firmware overhead. | Choose ADS8320EB when 16-bit precision is mandatory and external calibration infrastructure exists - pinout and timing differ significantly. |
Compared with ADC12130CIWM, ADS7822IP trades resolution and features for cost and speed, while ADS8320EB prioritizes precision over integration - neither offers the same combination of self-calibration, MUX, and 12-bit + sign output in a 20-pin SSOP package.
Availability
ADC12130CIWM is available at Aetrix Electronics and suitable for pen-based computing, GPS receiver design, digitizer tablet interfaces, and industrial sensor data acquisition requiring stable component supply across extended product lifecycles.
Supply support for ADC12130CIWM 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 and industrial-grade ICs.
The ADC12130CIWM belongs to TI's legacy high-accuracy SAR ADC family designed for portable and space-constrained instrumentation - emphasizing self-calibration, low-power operation, and robust serial interfacing in harsh environments.
FAQ
What is the maximum clock frequency supported by ADC12130CIWM for CCLK and SCLK?
ADC12130CIWM supports up to 5 MHz for both CCLK (conversion clock) and SCLK (serial clock), with minimum duty cycles of 40% for reliable operation. These clocks may be derived from the same source or separate generators - timing diagrams in SNAS098G confirm setup/hold margins remain valid at 5 MHz under worst-case conditions.
Does ADC12130CIWM require external zero or full-scale calibration components?
No, ADC12130CIWM does not require external zero or full-scale calibration components. Its on-chip self-calibration routine adjusts linearity, offset, and full-scale errors to typically ±1 LSB each - eliminating trim pots, DACs, or factory calibration steps during production or field use.
Can ADC12130CIWM operate from a 3.3V supply while maintaining full 12-bit + sign performance?
Yes, ADC12130CIWM is fully specified for operation at +3.3V ±10%, delivering 12-bit plus sign resolution, ±2 LSB INL, and 8.8 μs max conversion time. Power consumption drops to 15 mW (active) and 40 μW (power-down), with all AC/DC specs maintained per SNAS098G Electrical Characteristics tables.
How does the 2-channel multiplexer in ADC12130CIWM differ from those in ADC12132 and ADC12138?
ADC12130CIWM integrates a fixed 2-channel MUX with internal connection between MUXOUT1/A-DIN1 and MUXOUT2/A-DIN2 - unlike ADC12132 (2-channel) and ADC12138 (8-channel) which expose MUXOUT pins externally. This makes ADC12130CIWM simpler to route but less flexible for external signal conditioning between MUX and ADC inputs.
What is the purpose of the COM pin on ADC12130CIWM, and how is it used?
The COM pin on ADC12130CIWM serves as a pseudo-ground reference for single-ended operation, enabling CH0 or CH1 to be measured relative to a user-defined common-mode voltage instead of AGND. When used in pseudo-differential mode, COM establishes the negative input reference - critical for rejecting common-mode noise in sensor interfaces.
ADC12130CIWM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 114k
- Number of Inputs:
- 1, 2
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 3V ~ 5.5V
- Voltage - Supply, Digital:
- 3V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC12130CIWM FAQ
1.How can I place an order for ADC12130CIWM through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC12130CIWM 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 ADC12130CIWM reliable?
The price and inventory of ADC12130CIWM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC12130CIWM is usually 5 days.
3.What payment methods are accepted for ADC12130CIWM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC12130CIWM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC12130CIWM?
ADC12130CIWM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC12130CIWM 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 ADC12130CIWM?
For technical support, including ADC12130CIWM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC12130CIWM requirements.
6.How does Aetrix verify that ADC12130CIWM is sourced from the original manufacturer or authorized distributors?
All ADC12130CIWM 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 ADC12130CIWM meets industry standards.
7.What is the process for return or replacement of ADC12130CIWM?
All ADC12130CIWM units undergo pre-shipment inspection (PSI). If there is an issue with ADC12130CIWM, 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 ADC12130CIWM part is unused and in its original packaging.
Return procedure for ADC12130CIWM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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