Specifications
| Type | Description |
|---|---|
| Part Number | ADS112C04 |
| Manufacturer | Texas Instruments |
| Product Type | ADC |
| Category | Signal Chain |
| Package / Case | 16-pin WQFN 3.00 mm x 3.00 mm x 0.75 mm; 16-pin TSSOP 5.00 mm x 4.40 mm |
| ADC Resolution | 16 bit; nominal resolution, no missing codes |
| Input Channels | 2 differential or 4 single-ended; flexible input multiplexer |
| Maximum Data Rate | 2000 SPS; turbo mode |
| Normal Mode Data Rates | 20, 45, 90, 175, 330, 600, 1000 SPS; normal mode |
| Turbo Mode Data Rates | 40, 90, 180, 350, 660, 1200, 2000 SPS; turbo mode |
| Programmable Gain | 1 to 128; internal PGA |
| Noise-Free Resolution | 16 bit; 20 SPS |
| Input-Referred Noise | 490 nVRMS typ; normal mode, gain = 128, DR = 20 SPS |
| Unipolar Analog Supply Voltage | 2.3 V min, 5.5 V max |
| Digital Supply Voltage | 2.3 V min, 5.5 V max |
| Current Consumption | 315 uA typ |
| Internal Reference Voltage | 2.048 V |
| Internal Reference Drift | 5 ppm/°C typ |
| Internal Oscillator Accuracy | 2% |
| Internal Temperature Sensor Accuracy | 0.5°C typ |
| Programmable Current Sources | 10 uA to 1.5 mA; dual matched |
| I2C Interface Speed | Up to 1 Mbps |
| I2C Address Options | 16 pin-configurable addresses; A0 and A1 |
| Operating Ambient Temperature | -40°C to 125°C |
| HBM ESD Rating | ±2000 V |
| CDM ESD Rating | ±750 V |
| Junction-to-Ambient Thermal Resistance | 57.7°C/W (WQFN), 90.3°C/W (TSSOP) |
| Datasheet Status | request_only |
Product Overview
The ADS112C04 is a Texas Instruments 16-bit delta-sigma ADC for precision measurement designs that require configurable analog inputs and low-speed to 2 kSPS conversion. Its input multiplexer supports 2 differential or 4 single-ended channels, while the internal PGA provides gain settings from 1 to 128. Normal-mode data rates are 20, 45, 90, 175, 330, 600, and 1000 SPS; turbo-mode data rates are 40, 90, 180, 350, 660, 1200, and 2000 SPS.
The device operates from unipolar analog and digital supplies from 2.3 V to 5.5 V, and it also supports bipolar analog rails around ±2.5 V. Integrated functions include a 2.048 V reference with 5 ppm/°C typical drift, an internal oscillator with 2% accuracy, a temperature sensor with 0.5°C typical accuracy, and dual matched programmable excitation current sources from 10 uA to 1.5 mA.
Package options include 16-pin WQFN and 16-pin TSSOP formats. The I2C-compatible interface supports speeds up to 1 Mbps and 16 pin-configurable addresses using A0 and A1, supporting multi-device measurement architectures.
Key Features
- 16-bit delta-sigma ADC with no missing codes
- 2 differential or 4 single-ended input channels
- Turbo-mode conversion rate up to 2000 SPS
- Normal-mode data rates from 20 to 1000 SPS
- Internal PGA supports gain settings from 1 to 128
- 16-bit noise-free resolution at 20 SPS
- 490 nVRMS typical input-referred noise at gain 128
- 2.048 V internal reference with 5 ppm/°C drift
- Dual matched excitation current sources, 10 uA to 1.5 mA
- I2C-compatible interface supports speeds up to 1 Mbps
- 16 pin-configurable I2C addresses using A0 and A1
- Operating ambient temperature range from -40°C to 125°C
Typical Applications
- Differential sensor measurement
- Single-ended sensor input acquisition
- Bridge sensor excitation and readout
- Temperature measurement using internal sensor
- Low-current precision data acquisition
- Multi-address I2C measurement nodes
- Industrial signal-chain measurement
- External-reference precision conversion
Procurement Notes
When requesting a quote for ADS112C04, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What resolution does the ADS112C04 provide?
The ADS112C04 provides 16-bit nominal ADC resolution with no missing codes. At 20 SPS, the datasheet specifies 16-bit noise-free resolution.
How many analog input channels are available?
The ADS112C04 input multiplexer supports either 2 differential inputs or 4 single-ended inputs, giving flexibility for differential sensor measurement and single-ended signal acquisition.
What is the maximum conversion data rate?
The maximum data rate is 2000 SPS in turbo mode. Normal mode supports 20, 45, 90, 175, 330, 600, and 1000 SPS, while turbo mode supports 40 to 2000 SPS.
What supply voltage ranges does the ADS112C04 support?
For unipolar operation, the recommended analog supply range is 2.3 V to 5.5 V, and the digital supply range is also 2.3 V to 5.5 V. Bipolar analog operation is specified around ±2.5 V rails.
What interface is used for digital communication?
The ADS112C04 uses an I2C-compatible interface with speeds up to 1 Mbps. It supports 16 pin-configurable I2C addresses using the A0 and A1 address pins.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.