Overview
The ADS7049-Q1, produced by Texas Instruments, is an automotive Q100-qualified, 12-bit, 2-MSPS (Mega Samples Per Second) analog-to-digital converter (ADC). This device is designed for space-constrained and fast-scanning applications, particularly in the automotive sector. It features a capacitor-based, successive-approximation register (SAR) ADC with an inherent sample-and-hold circuit. The ADS7049-Q1 supports a wide analog input voltage range of 2.35 V to 3.6 V and operates over a temperature range of –40°C to +125°C. Its ultra-low power consumption and miniature 8-pin VSSOP package make it ideal for various automotive and industrial applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12-bit | |
| Sampling Rate | 2 MSPS | |
| Analog Input Voltage Range | 2.35 V to 3.6 V | V |
| Digital Supply Voltage Range | 1.65 V to 3.6 V | V |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package Type | 8-pin VSSOP | |
| Power Consumption (max at 2 MSPS with 3-V AVDD) | 1.38 mW | mW |
| Signal-to-Noise Ratio (SNR) at 3-V AVDD | 70 dB | dB |
| Total Harmonic Distortion (THD) at 3-V AVDD | –80 dB | dB |
Key Features
- Ultra-low power consumption: Less than 1 µW at 1 kSPS with 3-V AVDD.
- Miniature footprint: 8-pin VSSOP package with dimensions of 2.30 mm × 2.00 mm.
- Wide operating range: Supports both analog and digital supply voltages from 2.35 V to 3.6 V and 1.65 V to 3.6 V, respectively.
- Integrated offset calibration: Can be initiated by the user either on power-up or during operation.
- SPI-compatible serial interface: Controlled by CS and SCLK signals, with a maximum clock frequency of 32 MHz.
- Compliance with JESD8-7A standard for digital I/O.
- AEC-Q100 qualified with temperature grade 1: –40°C to +125°C ambient operating temperature range.
Applications
- Automotive Infotainment
- Automotive Sensors
- Level Sensors
- Ultrasonic Flow Meters
- Motor Control
- Portable Medical Equipment
Q & A
- What is the resolution of the ADS7049-Q1 ADC?
The ADS7049-Q1 has a 12-bit resolution.
- What is the maximum sampling rate of the ADS7049-Q1?
The maximum sampling rate is 2 MSPS.
- What is the operating temperature range of the ADS7049-Q1?
The device operates from –40°C to +125°C.
- What is the package type and size of the ADS7049-Q1?
The device is available in an 8-pin VSSOP package with dimensions of 2.30 mm × 2.00 mm.
- How much power does the ADS7049-Q1 consume at 2 MSPS with 3-V AVDD?
The maximum power consumption is 1.38 mW at 2 MSPS with 3-V AVDD.
- Is the ADS7049-Q1 compliant with any specific digital I/O standard?
Yes, it complies with the JESD8-7A standard for digital I/O.
- What is the significance of AEC-Q100 qualification for the ADS7049-Q1?
The AEC-Q100 qualification ensures the device meets stringent automotive standards, including temperature grade 1: –40°C to +125°C ambient operating temperature range.
- How does the SPI-compatible serial interface work on the ADS7049-Q1?
The SPI-compatible serial interface is controlled by the CS and SCLK signals, with the input signal sampled on the CS falling edge and SCLK used for conversion and serial data output.
- Can the offset calibration of the ADS7049-Q1 be initiated by the user?
Yes, the offset calibration can be initiated by the user either on power-up or during operation.
- What are some typical applications of the ADS7049-Q1?
Typical applications include automotive infotainment, automotive sensors, level sensors, ultrasonic flow meters, motor control, and portable medical equipment.
