Specifications
| Type | Description |
|---|---|
| Part Number | ADS7042 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | X2QFN-8 1.50 mm x 1.50 mm; VSSOP-8 2.30 mm x 2.00 mm |
| Resolution | 12 bits |
| Analog Input Type | Single-ended |
| Throughput Rate | 1 MSPS |
| Analog Supply Voltage Range | 1.65-3.6 V |
| Digital Supply Voltage Range | 1.65-3.6 V |
| Operating Free-Air Temperature | -40 to 125 °C |
| Absolute Maximum AVDD to GND | -0.3 to 3.9 V |
| Absolute Maximum DVDD to GND | -0.3 to 3.9 V |
| Absolute Maximum AINP to GND | -0.3 to AVDD + 0.3 V |
| Absolute Maximum AINM to GND | -0.3 to 0.3 V |
| Absolute Maximum Digital Input Voltage to GND | -0.3 to DVDD + 0.3 V |
| Storage Temperature | -60 to 150 °C |
| ESD Rating, Human Body Model | ±2000 V |
| ESD Rating, Charged Device Model | ±1000 V |
| Junction-to-Ambient Thermal Resistance, RUG X2QFN | 177.5 °C/W |
| Junction-to-Ambient Thermal Resistance, DCU VSSOP | 235.8 °C/W |
| Full-Scale Input Voltage Span | 0 to AVDD V |
| Absolute Input Voltage Range, AINP | -0.1 to AVDD + 0.1 V |
| Absolute Input Voltage Range, AINM | -0.1 to 0.1 V |
| Sampling Capacitance | 15 pF |
| No Missing Codes | 12 bits |
| Integral Nonlinearity, AVDD=3 V | min -1 LSB, typ ±0.7 LSB, max 1 LSB |
| Integral Nonlinearity, AVDD=1.8 V | min -2 LSB, typ ±1 LSB, max 2 LSB |
| Differential Nonlinearity, AVDD=3 V | min -0.99 LSB, typ ±0.5 LSB, max 1 LSB |
| Differential Nonlinearity, AVDD=1.8 V | min -0.99 LSB, typ ±0.7 LSB, max 2 LSB |
| Offset Error, Uncalibrated | typ ±12 LSB |
| Offset Error, Calibrated, AVDD=3 V | min -3 LSB, typ ±0.5 LSB, max 3 LSB |
| Offset Error, Calibrated, AVDD=1.8 V | min -4 LSB, typ ±1 LSB, max 4 LSB |
| Offset Error Drift | 5 ppm/°C |
| Gain Error, AVDD=3 V | min -0.1 %FS, typ ±0.05 %FS, max 0.1 %FS |
| Gain Error, AVDD=1.8 V | min -0.2 %FS, typ ±0.1 %FS, max 0.2 %FS |
| Gain Error Drift | 2 ppm/°C |
| Acquisition Time | 200 ns |
| Maximum Throughput Rate | 1 MHz |
| Signal-to-Noise Ratio, AVDD=3 V | min 69 dB, typ 70 dB |
| Signal-to-Noise Ratio, AVDD=1.8 V | typ 68 dB |
| Total Harmonic Distortion | typ -80 dB |
| Signal-to-Noise and Distortion, AVDD=3 V | min 68 dB, typ 69.5 dB |
| Signal-to-Noise and Distortion, AVDD=1.8 V | typ 67.5 dB |
| Spurious-Free Dynamic Range | typ 80 dB |
| Full-Power Bandwidth | typ 25 MHz |
| Serial Interface | SPI-compatible, 16 MHz |
| Input Range | 0 V to AVDD |
| Power Consumption, 1 MSPS, AVDD=1.8 V | 234 µW |
| Power Consumption, 1 MSPS, AVDD=3 V | 690 µW |
| Power Consumption, 100 kSPS, AVDD=3 V | 69 µW |
| Power Consumption, 1 kSPS, AVDD=3 V | less than 1 µW |
| Datasheet Status | request_only |
Product Overview
The ADS7042 is a Texas Instruments 12-bit SAR ADC in the Signal_Chain category. It uses a single-ended analog input and supports 1 MSPS throughput, with a maximum throughput rate of 1 MHz when used with a 16 MHz SCLK. The serial interface is SPI-compatible and specified for 16 MHz operation.
The device supports 1.65 V to 3.6 V analog and digital supplies and operates over a -40 to 125 °C free-air temperature range. Its full-scale input voltage span is 0 to AVDD V, with an AINP absolute input voltage range of -0.1 V to AVDD + 0.1 V and AINM range of -0.1 V to 0.1 V. The sampling capacitance is 15 pF and acquisition time is 200 ns.
Package options include X2QFN-8 at 1.50 mm x 1.50 mm and VSSOP-8 at 2.30 mm x 2.00 mm. Thermal resistance is specified as 177.5 °C/W for the RUG X2QFN package and 235.8 °C/W for the DCU VSSOP package. Applications can use the device where compact 12-bit single-ended sampling, SPI-compatible output, and low-voltage operation are required.
Key Features
- 12-bit SAR ADC resolution
- Single-ended analog input architecture
- 1 MSPS throughput rate
- 1.65 V to 3.6 V analog supply
- 1.65 V to 3.6 V digital supply
- 0 V to AVDD unipolar input range
- SPI-compatible 16 MHz serial interface
- 15 pF sampling capacitance
- 200 ns acquisition time
- 12-bit no-missing-codes performance
- -40 to 125 °C operating temperature
- Low-power operation down to less than 1 µW
Typical Applications
- Single-ended analog signal digitization
- Low-voltage data acquisition
- SPI-connected sensor measurement
- Compact Signal_Chain designs
- Battery-powered sampling systems
- 1 MSPS monitoring circuits
- Unipolar input measurement
Procurement Notes
When requesting a quote for ADS7042, 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 type of converter is the ADS7042?
The ADS7042 is a Texas Instruments 12-bit SAR ADC in the Signal_Chain category. It uses a single-ended analog input and supports a 1 MSPS throughput rate with an SPI-compatible 16 MHz serial interface.
What supply voltage range does ADS7042 support?
The ADS7042 recommended operating conditions specify both analog supply voltage and digital supply voltage ranges of 1.65 V to 3.6 V. The operating free-air temperature range is -40 to 125 °C.
Which package options are specified for ADS7042?
The extracted package information lists X2QFN-8 at 1.50 mm x 1.50 mm and VSSOP-8 at 2.30 mm x 2.00 mm. Thermal resistance is specified as 177.5 °C/W for RUG X2QFN and 235.8 °C/W for DCU VSSOP.
What input voltage range is supported by ADS7042?
ADS7042 has a unipolar input range from 0 V to AVDD. The full-scale input voltage span is specified as 0 to AVDD V, excluding gain and offset error.
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.