Overview
The AD7657BSTZ-REEL is a high-performance analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD7656/AD7657/AD7658 family and is designed for high-speed data acquisition applications. It features six 14-bit ADCs, each capable of sampling at 250 kSPS, making it suitable for a wide range of industrial, medical, and automotive applications. The device includes track-and-hold amplifiers that can handle input frequencies up to 12 MHz and supports both parallel and high-speed serial interfaces.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Number of ADCs | 6 | - | - |
| Resolution | 14-bit | - | - |
| Sampling Rate | 250 kSPS | - | - |
| Input Range | ±4 × VREF, ±2 × VREF | - | True bipolar input signals |
| Reference Voltage | 2.5 V | - | On-chip reference |
| Conversion Time | 3.1 µs | - | Max |
| Track-and-Hold Acquisition Time | 550 ns | - | Max |
| Interface | Parallel and high-speed serial | - | Daisy-chain feature in serial mode |
| Package | 64-Lead Low Profile Quad Flat Package (LQFP) | - | - |
| Operating Temperature | −40°C to +85°C | - | - |
Key Features
- Six true bipolar, high impedance analog inputs.
- High-speed parallel and serial interfaces with daisy-chain capability in serial mode.
- On-chip 2.5 V reference voltage.
- Independent, simultaneous sampling of the three ADC pairs using three CONVST pins.
- Track-and-hold amplifiers capable of handling input frequencies up to 12 MHz.
- ROHS3 compliant.
Applications
The AD7657BSTZ-REEL is versatile and can be used in various applications, including:
- Industrial automation and control systems.
- Medical devices such as patient monitoring systems and diagnostic equipment.
- Automotive systems, including engine control units and safety systems.
- Data acquisition systems in scientific and research environments.
- Aerospace and defense applications requiring high reliability and precision.
Q & A
- What is the resolution of the AD7657BSTZ-REEL ADC?
The AD7657BSTZ-REEL has a resolution of 14 bits. - What is the maximum sampling rate of the AD7657BSTZ-REEL?
The maximum sampling rate is 250 kSPS. - What types of interfaces does the AD7657BSTZ-REEL support?
The device supports both high-speed parallel and serial interfaces. - Can the AD7657BSTZ-REEL handle bipolar input signals?
Yes, it can handle true bipolar input signals in the ±4 × VREF and ±2 × VREF ranges. - What is the operating temperature range of the AD7657BSTZ-REEL?
The operating temperature range is −40°C to +85°C. - Does the AD7657BSTZ-REEL have an on-chip reference voltage?
Yes, it includes an on-chip 2.5 V reference voltage. - How many ADCs are integrated into the AD7657BSTZ-REEL?
The device includes six 14-bit ADCs. - What is the package type of the AD7657BSTZ-REEL?
The package type is a 64-Lead Low Profile Quad Flat Package (LQFP). - Is the AD7657BSTZ-REEL ROHS compliant?
Yes, it is ROHS3 compliant. - Can multiple AD7657BSTZ-REEL devices be connected in a daisy-chain configuration?
Yes, in serial interface mode, the parts have a daisy-chain feature that allows multiple ADCs to connect to a single serial interface.
