Overview
The ADS7885SDBVR is an 8-bit, 3-MSPS (mega-samples per second) analog-to-digital converter (ADC) produced by Texas Instruments. This device is part of the ADS7885 series, which includes a capacitor-based successive approximation register (SAR) A/D converter with an inherent sample and hold function. The ADS7885 is designed for low power consumption and high-speed data acquisition, making it suitable for a variety of applications, including battery-powered systems and high-speed closed-loop systems.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 8 bits |
| Sample Rate | 3 MSPS |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Power Consumption | 6.8 mW at 3 V, 15 mW at 5 V |
| Input Range | 0 V to VDD |
| Integral Nonlinearity (INL) | ±0.15 LSB |
| Differential Nonlinearity (DNL) | ±0.1 LSB |
| SINAD | 49.8 dB |
| THD | -68 dB |
| Operating Temperature Range | -40°C to 125°C |
| Package | 6-pin SOT-23 |
| Powerdown Current | 1 µA |
| Input Bandwidth | 30 MHz at 3 dB |
Key Features
- 3-MHz sample rate with serial interface controlled by CS and SCLK signals.
- Zero latency for real-time data acquisition.
- Low power consumption: 6.8 mW at 3 V and 15 mW at 5 V.
- Wide supply voltage range: 2.7 V to 5.5 V.
- High input bandwidth: 30 MHz at 3 dB.
- Powerdown feature for low power consumption during idle periods.
- High digital input tolerance: digital inputs can go up to 5.5 V even when the device supply is 2.7 V.
Applications
- Base band converters in radio communication.
- Motor current/bus voltage sensors in digital drives.
- Optical networking (DWDM, MEMS-based switching).
- Optical sensors.
- Battery-powered systems.
- Medical instrumentation.
- High-speed data acquisition systems.
- High-speed closed-loop systems.
Q & A
- What is the resolution of the ADS7885SDBVR?
The ADS7885SDBVR has an 8-bit resolution. - What is the sample rate of the ADS7885SDBVR?
The sample rate is 3 MSPS. - What is the supply voltage range for the ADS7885SDBVR?
The supply voltage range is from 2.7 V to 5.5 V. - How much power does the ADS7885SDBVR consume?
The power consumption is 6.8 mW at 3 V and 15 mW at 5 V. - What is the input range of the ADS7885SDBVR?
The input range is from 0 V to VDD. - What is the operating temperature range of the ADS7885SDBVR?
The operating temperature range is from -40°C to 125°C. - In what package is the ADS7885SDBVR available?
The ADS7885SDBVR is available in a 6-pin SOT-23 package. - What is the powerdown current of the ADS7885SDBVR?
The powerdown current is 1 µA. - What are some typical applications of the ADS7885SDBVR?
Typical applications include base band converters, motor current/bus voltage sensors, optical networking, optical sensors, battery-powered systems, medical instrumentation, and high-speed data acquisition systems. - Does the ADS7885SDBVR support high digital input tolerance?
Yes, the digital inputs can go up to 5.5 V even when the device supply is 2.7 V.
