Overview
The AD7887BR, produced by Analog Devices Inc., is a high-speed, low-power 12-bit analog-to-digital converter (ADC) designed for a wide range of applications. It operates from a single 2.7 V to 5.25 V power supply and is capable of a throughput rate of 125 kSPS. The ADC features a single-ended sampling scheme and can be configured for either single-channel or dual-channel operation. It is housed in an 8-lead narrow SOIC or MSOP package, making it one of the smallest 12-bit dual-/single-channel ADCs available.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | 125 kSPS |
| Number of Inputs | 1 or 2 (single-channel or dual-channel) |
| Input Type | Single-ended |
| Data Interface | SPI, QSPI, MICROWIRE, DSP compatible |
| Reference Type | Internal or External |
| Supply Voltage | 2.7 V to 5.25 V |
| Operating Temperature | -40°C to +125°C |
| Package | 8-lead SOIC or MSOP |
Key Features
- High-speed operation with a throughput rate of 125 kSPS.
- Low power consumption: typically 2 mW in normal operation and 3 μW in power-down mode.
- Flexible power management options, including automatic power-down after conversion.
- Read-only ADC capability.
- Analog input range from 0 V to VREF (internal or external reference).
- Versatile serial input/output port compatible with SPI, QSPI, MICROWIRE, and DSP.
- CMOS construction for low power dissipation.
Applications
- Battery-powered systems (personal digital assistants, medical instruments, mobile communications).
- Instrumentation and control systems.
- High-speed modems.
- Automotive applications.
Q & A
- What is the AD7887BR's sampling rate? The AD7887BR has a sampling rate of 125 kSPS.
- How many input channels does the AD7887BR support? The AD7887BR can be configured for either single-channel or dual-channel operation.
- What is the power supply range for the AD7887BR? The AD7887BR operates from a single 2.7 V to 5.25 V power supply.
- What are the package options for the AD7887BR? The AD7887BR is available in 8-lead narrow SOIC and MSOP packages.
- What is the operating temperature range of the AD7887BR? The operating temperature range is -40°C to +125°C.
- Can the AD7887BR be used in automotive applications? Yes, the AD7887BR is qualified for automotive applications.
- What type of data interface does the AD7887BR support? The AD7887BR supports SPI, QSPI, MICROWIRE, and DSP compatible interfaces.
- How does the AD7887BR manage power? The AD7887BR has flexible power management options, including automatic power-down after conversion.
- What is the typical power consumption of the AD7887BR in normal operation? The typical power consumption is 2 mW in normal operation and 3 μW in power-down mode.
- Can the AD7887BR be configured as a read-only ADC? Yes, the AD7887BR can be configured as a read-only ADC.
