Overview
The ADS7883SDBVR is a 12-bit, 3-MSPS (Mega Samples Per Second) analog-to-digital converter (ADC) produced by Texas Instruments. This device is part of the MicroPower Miniature SAR (Successive Approximation Register) Converter Family and is known for its high resolution, low power consumption, and compact design. The ADS7883 operates over a wide supply voltage range from 2.7 V to 5.5 V, making it versatile for various applications, including battery-powered systems and high-speed data acquisition.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 12 | - | - | Bits |
| Sample Rate | 2 | - | 3 | MSPS |
| Supply Voltage | 2.7 | - | 5.5 | V |
| Input Voltage Range | 0 | - | VDD | V |
| Integral Nonlinearity (INL) | -1 | - | ±0.6 | LSB |
| Differential Nonlinearity (DNL) | -1 | - | ±0.5 | LSB |
| Signal-to-Noise and Distortion (SINAD) | 72 | - | - | dB |
| Total Harmonic Distortion (THD) | -84 | - | - | dB |
| Power Consumption (at 3 V, 2 MSPS) | 6.45 | - | - | mW |
| Power Consumption (at 5 V, 3 MSPS) | 13.5 | - | - | mW |
| Operating Temperature Range | -40 | - | 125 | °C |
| Package Type | - | - | - | 6-Pin SOT23 |
Key Features
- High resolution of 12 bits with a sample rate of up to 3 MSPS.
- Low power consumption, making it suitable for battery-powered applications.
- Wide supply voltage range from 2.7 V to 5.5 V.
- High accuracy with ±0.6 LSB INL and ±0.5 LSB DNL.
- High signal-to-noise and distortion ratio (SINAD) of 72 dB and low total harmonic distortion (THD) of -84 dB.
- Power-down feature to reduce power consumption during idle periods.
- Glueless connection with microprocessors and DSPs via CS and SCLK signals.
- Compact 6-pin SOT23 package.
- Operating temperature range from -40°C to 125°C.
Applications
- Base band converters in radio communication systems.
- Motor current and bus voltage sensors in digital systems.
- Optical networking, including DWDM and MEMS-based switching.
- Optical sensors and medical instrumentation.
- High-speed data acquisition and closed-loop systems.
- Battery-powered systems and portable devices.
Q & A
- What is the resolution of the ADS7883SDBVR ADC?
The ADS7883SDBVR has a resolution of 12 bits. - What is the maximum sample rate of the ADS7883SDBVR?
The maximum sample rate is 3 MSPS. - What is the supply voltage range for the ADS7883SDBVR?
The supply voltage range is from 2.7 V to 5.5 V. - What is the typical power consumption of the ADS7883SDBVR at 3 V and 2 MSPS?
The typical power consumption is 6.45 mW. - What is the operating temperature range of the ADS7883SDBVR?
The operating temperature range is from -40°C to 125°C. - What package type is the ADS7883SDBVR available in?
The ADS7883SDBVR is available in a 6-pin SOT23 package. - How does the power-down feature work in the ADS7883SDBVR?
The device enters power-down mode if CS goes high anytime after the 2nd SCLK falling edge to before the 10th SCLK falling edge, stopping the ongoing conversion and reducing power consumption. - What are some common applications of the ADS7883SDBVR?
Common applications include base band converters in radio communication, motor current and bus voltage sensors, optical networking, and high-speed data acquisition systems. - What are the key specifications for the digital input and output of the ADS7883SDBVR?
The digital input voltage can go as high as 5.5 V, and the output levels are governed by VDD, with VOH and VOL specified in the electrical specifications table. - How does the ADS7883SDBVR handle high impedance sources?
For sources with high impedance, using a buffer like the THS4031 can help achieve the rated performance of the converter.
