Overview
The AD7688BCPZRL is a high-performance, 16-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates from a single 5 V power supply and is designed for low power consumption and high-speed sampling. It features a successive approximation architecture with no missing codes, an internal conversion clock, and a versatile serial interface. The AD7688 is available in 10-lead MSOP and 3 mm × 3 mm LFCSP packages, making it suitable for space-constrained applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Throughput | Up to 500 kSPS |
| Integral Nonlinearity (INL) | ±0.4 LSB typ, ±1.5 LSB max |
| Dynamic Range | 96.5 dB |
| Signal-to-Noise Ratio (SNR) | 95.5 dB at 20 kHz |
| Total Harmonic Distortion (THD) | −118 dB at 20 kHz |
| Analog Input Range | ±VREF (0 V to VREF) |
| Power Supply | Single 5 V |
| Logic Interface Voltage | 1.8 V, 2.5 V, 3 V, or 5 V |
| Power Dissipation | 3.75 mW at 5 V/100 kSPS, 3.75 µW at 5 V/100 SPS |
| Standby Current | 1 nA |
| Package | 10-lead MSOP, 10-lead LFCSP |
Key Features
- No missing codes and high accuracy with ±0.4 LSB typical and ±1.5 LSB maximum INL.
- True differential analog input range from 0 V to VREF.
- No pipeline delay and low noise, wide bandwidth track-and-hold circuit.
- Versatile serial interface compatible with SPI, QSPI, MICROWIRE, and DSP.
- Daisy-chain capability for multiple ADCs on a single 3-wire bus.
- Optional BUSY indicator.
- Low power consumption with power scaling linearly with throughput.
- Pin-for-pin compatibility with AD7685, AD7686, and AD7687.
Applications
The AD7688BCPZRL is suitable for a variety of applications requiring high precision and low power consumption, such as:
- Medical devices and diagnostic equipment.
- Industrial control and automation systems.
- Aerospace and defense systems.
- High-performance data acquisition systems.
- Audio and video processing systems.
Q & A
- What is the resolution of the AD7688BCPZRL? The AD7688BCPZRL has a 16-bit resolution.
- What is the maximum throughput of the AD7688BCPZRL? The maximum throughput is up to 500 kSPS.
- What is the typical INL of the AD7688BCPZRL? The typical INL is ±0.4 LSB.
- What is the dynamic range of the AD7688BCPZRL? The dynamic range is 96.5 dB.
- What is the SNR of the AD7688BCPZRL at 20 kHz? The SNR at 20 kHz is 95.5 dB.
- What is the THD of the AD7688BCPZRL at 20 kHz? The THD at 20 kHz is −118 dB.
- What are the available package options for the AD7688BCPZRL? The available packages are 10-lead MSOP and 10-lead LFCSP.
- Is the AD7688BCPZRL compatible with different logic interface voltages? Yes, it is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic interface voltages.
- How does the power consumption of the AD7688BCPZRL scale? The power consumption scales linearly with throughput.
- Can multiple AD7688BCPZRL ADCs be daisy-chained? Yes, multiple ADCs can be daisy-chained on a single 3-wire bus.
