Overview
The AD7686BRMZ is a 16-bit, charge redistribution, successive approximation, analog-to-digital converter (ADC) produced by Analog Devices Inc. This device operates from a single 5 V power supply and features a low power, high speed, 16-bit sampling ADC with no missing codes. It includes an internal conversion clock and a versatile serial interface port compatible with SPI, QSPI, MICROWIRE, and DSP interfaces. The ADC also incorporates a low noise, wide bandwidth, short aperture delay track-and-hold circuit, enabling precise analog input sampling.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16-bit | |
| Throughput | Up to 500 kSPS | |
| Integral Nonlinearity (INL) | ±0.6 LSB (typ), ±2 LSB (max) | |
| Signal-to-Noise and Distortion Ratio (SINAD) | 92.5 dB at 20 kHz | |
| Total Harmonic Distortion (THD) | -110 dB at 20 kHz | |
| Analog Input Range | 0 V to VREF (up to VDD) | |
| Power Supply | Single 5 V | |
| Logic Interface Voltage | 1.8 V, 2.5 V, 3 V, or 5 V | |
| Package Type | 10-Lead MSOP or 10-Lead LFCSP | |
| Operating Temperature Range | -40°C to +85°C | |
| Power Dissipation | 3.75 µW at 5 V/100 SPS, 3.75 mW at 5 V/100 kSPS, 15-21.5 mW at 5 V/500 kSPS | |
| Standby Current | 1 nA |
Key Features
- Low power, high speed 16-bit ADC with no missing codes.
- Internal conversion clock and versatile serial interface port (SPI, QSPI, MICROWIRE, DSP compatible).
- Low noise, wide bandwidth, short aperture delay track-and-hold circuit.
- Pseudo differential analog input range from 0 V to VREF (up to VDD).
- No pipeline delay.
- Daisy-chain capability for multiple ADCs on a single 3-wire bus and optional busy indicator.
- Compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using separate supply VIO.
Applications
The AD7686BRMZ is suitable for a variety of applications requiring high precision and low power consumption, such as:
- Industrial automation and control systems.
- Medical devices and diagnostic equipment.
- Aerospace and defense systems.
- High-performance data acquisition systems.
- Automotive systems requiring precise analog-to-digital conversion.
Q & A
- What is the resolution of the AD7686BRMZ ADC?
The AD7686BRMZ has a 16-bit resolution.
- What is the maximum throughput of the AD7686BRMZ?
The maximum throughput is up to 500 kSPS.
- What is the typical integral nonlinearity (INL) of the AD7686BRMZ?
The typical INL is ±0.6 LSB, with a maximum of ±2 LSB.
- What is the signal-to-noise and distortion ratio (SINAD) of the AD7686BRMZ at 20 kHz?
The SINAD at 20 kHz is 92.5 dB.
- What is the total harmonic distortion (THD) of the AD7686BRMZ at 20 kHz?
The THD at 20 kHz is -110 dB.
- What is the analog input range of the AD7686BRMZ?
The analog input range is from 0 V to VREF (up to VDD).
- What are the package options for the AD7686BRMZ?
The AD7686BRMZ is available in 10-Lead MSOP and 10-Lead LFCSP packages.
- What is the operating temperature range of the AD7686BRMZ?
The operating temperature range is -40°C to +85°C.
- How does the power dissipation of the AD7686BRMZ scale?
Power dissipation scales linearly with throughput.
- Can multiple AD7686BRMZ ADCs be daisy-chained?
Yes, multiple ADCs can be daisy-chained on a single 3-wire bus.
