Overview
The ADS7042IRUGR, produced by Texas Instruments, is a 12-bit, 1-MSPS (mega-samples per second) analog-to-digital converter (ADC) known for its ultra-low power consumption and ultra-small size. This device is part of the SAR (Successive Approximation Register) ADC family and features a capacitor-based architecture with an inherent sample-and-hold circuit. It supports a wide analog input voltage range of 1.65 V to 3.6 V and operates over a temperature range of –40°C to 125°C, making it suitable for a variety of applications, especially in space-constrained and battery-powered devices.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 Bits | |
| Sampling Rate | Up to 1 MSPS | |
| Analog Input Voltage Range | 0 V to AVDD (1.65 V to 3.6 V) | V |
| Power Consumption | 234 µW at 1 MSPS with 1.8-V AVDD, 690 µW at 1 MSPS with 3-V AVDD | µW |
| Digital Supply Voltage Range | 1.65 V to 3.6 V | V |
| Temperature Range | –40°C to 125°C | °C |
| Package Type | X2QFN-8 (1.5 mm x 1.5 mm) | |
| SNR (Signal-to-Noise Ratio) | 70 dB with 3-V AVDD | dB |
| THD (Total Harmonic Distortion) | –80 dB with 3-V AVDD | dB |
| Integral Nonlinearity (INL) | ±1 LSB (Max) | LSB |
| Differential Nonlinearity (DNL) | ±1 LSB (Max) | LSB |
Key Features
- Industry’s first SAR ADC with nanowatt power consumption, making it highly energy-efficient.
- Ultra-small size in an X2QFN-8 package (1.5 mm x 1.5 mm), ideal for space-constrained applications.
- Wide operating range: AVDD from 1.65 V to 3.6 V and DVDD from 1.65 V to 3.6 V, independent of AVDD.
- Integrated offset calibration for improved accuracy.
- SPI™-compatible serial interface with a maximum clock speed of 16 MHz.
- No missing codes (NMC) and excellent linearity with ±1-LSB (Max) DNL and INL.
- High performance metrics including 70-dB SNR and –80-dB THD with 3-V AVDD.
Applications
- Low-power data acquisition systems.
- Battery-powered handheld equipment.
- Level sensors and ultrasonic flow meters.
- Motor control systems.
- Wearable fitness and portable medical equipment.
- Hard drives and other storage devices.
- Glucose meters and other medical diagnostic tools.
Q & A
- What is the resolution of the ADS7042IRUGR ADC?
The ADS7042IRUGR has a 12-bit resolution.
- What is the maximum sampling rate of the ADS7042IRUGR?
The maximum sampling rate is 1 MSPS.
- What is the power consumption of the ADS7042IRUGR at 1 MSPS with 1.8-V AVDD?
The power consumption is 234 µW at 1 MSPS with 1.8-V AVDD.
- What is the temperature range for the ADS7042IRUGR?
The device operates over a temperature range of –40°C to 125°C.
- What type of package does the ADS7042IRUGR come in?
The device is available in an X2QFN-8 package (1.5 mm x 1.5 mm).
- What is the SNR of the ADS7042IRUGR with 3-V AVDD?
The SNR is 70 dB with 3-V AVDD.
- Does the ADS7042IRUGR have integrated offset calibration?
Yes, the device includes integrated offset calibration.
- What type of serial interface does the ADS7042IRUGR use?
The device uses an SPI™-compatible serial interface.
- What are some typical applications of the ADS7042IRUGR?
Typical applications include low-power data acquisition, battery-powered handheld equipment, level sensors, ultrasonic flow meters, motor control, wearable fitness devices, and portable medical equipment.
- Is the ADS7042IRUGR suitable for use in harsh environments?
Yes, the device is specified for operation from –40°C to 125°C, making it suitable for use in harsh environments.
