Overview
The ADS7887SDBVR is a 10-bit, 1.25-MSPS (mega-samples per second), micro-power, miniature SAR (Successive Approximation Register) analog-to-digital converter (ADC) produced by Texas Instruments. This device is part of the ADS788x family, which includes both 10-bit (ADS7887) and 8-bit (ADS7888) resolutions. The ADS7887SDBVR is known for its high-speed conversion, low power consumption, and compact packaging, making it suitable for a variety of applications, including battery-powered systems, medical instrumentation, and high-speed data acquisition systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 10-bit | |
| Sample Rate | 1.25 MSPS | |
| Supply Voltage Range | 2.35 V to 5.25 V | V |
| Power Dissipation at 1.25 MSPS | 3.8 mW at 3 V, 8 mW at 5 V | mW |
| INL (Integral Non-Linearity) | ±0.35 LSB | LSB |
| DNL (Differential Non-Linearity) | ±0.15 LSB | LSB |
| SINAD (Signal-to-Noise and Distortion) | 61 dB | dB |
| THD (Total Harmonic Distortion) | -84 dB | dB |
| Input Range | 0 V to VDD | V |
| Power-Down Current | 1 µA | µA |
| Input Bandwidth | 15 MHz at 3 dB | MHz |
| Package | 6-Pin SOT-23 or SC70 | |
| Operating Temperature Range | -40°C to 125°C | °C |
Key Features
- High-speed conversion rate of 1.25 MSPS
- Zero latency
- 25-MHz serial interface for fast data transfer
- Wide supply voltage range from 2.35 V to 5.25 V
- Low power consumption: 3.8 mW at 3 V and 8 mW at 5 V
- High accuracy with ±0.35 LSB INL and ±0.15 LSB DNL
- Excellent signal quality with 61 dB SINAD and -84 dB THD
- Unipolar input range from 0 V to VDD
- Power-down feature with 1 µA current
- Compact 6-pin SOT-23 and SC70 packages
- Wide operating temperature range from -40°C to 125°C
Applications
- Base band converters in radio communication
- Motor current and 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 ADS7887SDBVR?
The ADS7887SDBVR has a resolution of 10 bits.
- What is the sample rate of the ADS7887SDBVR?
The sample rate is 1.25 MSPS.
- What is the supply voltage range for the ADS7887SDBVR?
The supply voltage range is from 2.35 V to 5.25 V.
- How much power does the ADS7887SDBVR consume at 1.25 MSPS?
It consumes 3.8 mW at 3 V and 8 mW at 5 V.
- What is the input range of the ADS7887SDBVR?
The input range is from 0 V to VDD.
- What is the power-down current of the ADS7887SDBVR?
The power-down current is 1 µA.
- What is the operating temperature range of the ADS7887SDBVR?
The operating temperature range is from -40°C to 125°C.
- What are the package options for the ADS7887SDBVR?
The device is available in 6-pin SOT-23 and SC70 packages.
- What are some typical applications of the ADS7887SDBVR?
Typical applications include base band converters, motor current sensors, optical networking, optical sensors, battery-powered systems, medical instrumentation, and high-speed data acquisition systems.
- What is the signal-to-noise and distortion (SINAD) of the ADS7887SDBVR?
The SINAD is 61 dB.
- What is the total harmonic distortion (THD) of the ADS7887SDBVR?
The THD is -84 dB.
