Overview
The ADS7042IDCUR, produced by Texas Instruments, is a 12-bit, 1-MSPS (mega-samples per second) analog-to-digital converter (ADC) designed for ultra-low power and ultra-small size applications. This device is part of the SAR (Successive Approximation Register) ADC family and is notable for its wide analog input voltage range and low power consumption, making it suitable for space-constrained and battery-powered devices.
The ADS7042 supports a wide analog input voltage range of 1.65 V to 3.6 V and includes an inherent sample-and-hold circuit. It features an SPI-compatible serial interface controlled by the CS and SCLK signals, enabling direct interface to a variety of host controllers. The device is available in 8-pin X2QFN and VSSOP packages and operates over an extended industrial temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Resolution | 12 | - | - | Bits |
| Sampling Rate | - | - | 1 | MSPS |
| Analog Input Voltage Range | 1.65 | - | 3.6 | V |
| Analog Supply Voltage (AVDD) | 1.65 | - | 3.6 | V |
| Digital I/O Supply Voltage (DVDD) | 1.65 | - | 3.6 | V |
| Analog Supply Current (IAVDD) at 1 MSPS, AVDD = 3 V | - | 234 | - | µA |
| Operating Temperature Range | -40 | - | 125 | °C |
| Package Type | - | - | X2QFN, VSSOP | - |
Key Features
- Ultra-Low Power Consumption: Suitable for battery-powered and space-constrained applications.
- Small Form Factor: Available in 8-pin X2QFN and VSSOP packages, smaller than a 0805 SMD component.
- Wide Analog Input Voltage Range: Supports input voltages from 1.65 V to 3.6 V.
- SPI-Compatible Serial Interface: Controlled by CS and SCLK signals for easy integration with host controllers.
- Integrated Offset Calibration: Maintains excellent offset specifications over the entire operating range.
- High-Speed Sampling: 1 MSPS throughput rate.
- Extended Industrial Temperature Range: Operates from –40°C to 125°C.
Applications
- Low-Power Data Acquisition: Ideal for applications requiring high-speed data acquisition with minimal power consumption.
- Battery-Powered Handheld Equipment: Suitable for portable devices that need efficient power management.
- Level Sensors and Ultrasonic Flow Meters: Used in industrial sensing applications.
- Motor Control and Wearable Fitness Devices: Applicable in various control and monitoring systems.
- Portable Medical Equipment and Glucose Meters: Used in medical devices requiring precise and low-power ADCs.
- Hard Drives: Can be used in storage devices for data acquisition.
Q & A
- What is the resolution of the ADS7042 ADC?
The ADS7042 is a 12-bit analog-to-digital converter.
- What is the maximum sampling rate of the ADS7042?
The maximum sampling rate is 1 MSPS (mega-samples per second).
- What is the range of the analog input voltage for the ADS7042?
The analog input voltage range is from 1.65 V to 3.6 V.
- What types of packages are available for the ADS7042?
The device is available in 8-pin X2QFN and VSSOP packages.
- What is the operating temperature range of the ADS7042?
The device operates from –40°C to 125°C.
- Does the ADS7042 support SPI-compatible serial interface?
Yes, it supports an SPI-compatible serial interface controlled by the CS and SCLK signals.
- What is the typical power consumption of the ADS7042 at 1 MSPS?
The typical analog supply current (IAVDD) at 1 MSPS with AVDD = 3 V is approximately 234 µA.
- Is the ADS7042 suitable for battery-powered applications?
Yes, it is designed for ultra-low power consumption, making it suitable for battery-powered and space-constrained applications.
- Does the ADS7042 have integrated offset calibration?
Yes, it includes an integrated offset calibration feature to maintain excellent offset specifications.
- What are some common applications of the ADS7042?
Common applications include low-power data acquisition, battery-powered handheld equipment, level sensors, ultrasonic flow meters, motor control, wearable fitness devices, portable medical equipment, and hard drives.
