Overview
The AD7887AR, produced by Analog Devices Inc., is a high-speed, low-power, 12-bit analog-to-digital converter (ADC) designed for a variety of applications. It operates from a single 2.7 V to 5.25 V power supply and is capable of a 125 kSPS throughput rate. The ADC features a single-ended sampling scheme with an input track-and-hold that acquires a signal in 500 ns. It can be configured for either dual- or single-channel operation via the on-chip control register, making it versatile for different use cases.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12-bit |
| Throughput Rate | 125 kSPS |
| Power Supply Range | 2.7 V to 5.25 V |
| Input Track-and-Hold Acquisition Time | 500 ns |
| Output Coding | Straight Binary |
| Analog Input Range (Single-Channel) | 0 to VREF |
| Analog Input Range (Dual-Channel) | 0 to VDD |
| Power Dissipation (Normal Operation) | Typically 2 mW |
| Power Dissipation (Power-Down Mode) | 3 μW |
| Package Options | 8-lead narrow SOIC, 8-lead MSOP |
Key Features
- Smallest 12-bit dual-/single-channel ADC in an 8-lead MSOP package
- Lowest power 12-bit dual-/single-channel ADC
- Flexible power management options, including automatic power-down after conversion
- Read-only ADC capability
- Analog input range from 0 V to VREF
- Versatile serial input/output port (SPI/QSPI/MICROWIRE/DSP compatible)
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 resolution of the AD7887AR ADC?
The AD7887AR has a 12-bit resolution.
- What is the throughput rate of the AD7887AR?
The throughput rate is 125 kSPS.
- What is the power supply range for the AD7887AR?
The power supply range is from 2.7 V to 5.25 V.
- How long does the input track-and-hold take to acquire a signal?
The input track-and-hold acquires a signal in 500 ns.
- What is the output coding of the AD7887AR?
The output coding is straight binary.
- Can the AD7887AR be configured for dual-channel operation?
Yes, the AD7887AR can be configured for either single- or dual-channel operation.
- What are the package options for the AD7887AR?
The AD7887AR is available in 8-lead narrow SOIC and 8-lead MSOP packages.
- What is the typical power dissipation of the AD7887AR in normal operation?
The typical power dissipation is 2 mW in normal operation.
- What is the power dissipation in power-down mode?
The power dissipation is 3 μW in power-down mode.
- Is the AD7887AR suitable for automotive applications?
Yes, the AD7887AR is qualified for automotive applications.
