Overview
The AD7686CRMZ 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. The ADC also contains a low noise, wide bandwidth, short aperture delay track-and-hold circuit. The AD7686 is available in 10-lead MSOP and 10-lead LFCSP packages and operates over a temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16-bit |
| Throughput | Up to 500 kSPS |
| Integral Nonlinearity (INL) | ±0.6 LSB typical, ±2 LSB maximum |
| 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 (VDD) |
| Logic Interface Voltage | 1.8 V, 2.5 V, 3 V, or 5 V (VIO) |
| Package Types | 10-lead MSOP, 10-lead LFCSP |
| Operating Temperature Range | −40°C to +85°C |
| Standby Current | 1 nA |
| Power Dissipation | 3.75 µW at 5 V/100 SPS, 3.75 mW at 5 V/100 kSPS, 15 mW at 5 V/500 kSPS |
Key Features
- High speed and low power consumption with power dissipation scaling linearly with throughput.
- No missing codes and internal conversion clock.
- Low noise, wide bandwidth, short aperture delay track-and-hold circuit.
- Pseudo differential analog input range from 0 V to VREF (up to VDD).
- SPI-compatible serial interface with daisy-chain capability and optional busy indicator.
- Compatibility with 1.8 V, 2.5 V, 3 V, or 5 V logic using separate supply VIO.
- Low standby current of 1 nA.
Applications
The AD7686CRMZ is suitable for a variety of applications requiring high-speed, low-power analog-to-digital conversion. These include:
- Industrial automation and control systems.
- Medical devices and diagnostic equipment.
- Aerospace and defense systems.
- Automotive systems, especially those requiring high accuracy and reliability.
- Test and measurement instruments.
Q & A
- What is the resolution of the AD7686CRMZ ADC?
The AD7686CRMZ has a 16-bit resolution.
- What is the maximum throughput of the AD7686CRMZ?
The maximum throughput is up to 500 kSPS.
- What is the typical INL of the AD7686CRMZ?
The typical Integral Nonlinearity (INL) is ±0.6 LSB.
- What is the SINAD of the AD7686CRMZ at 20 kHz?
The SINAD at 20 kHz is 92.5 dB.
- What are the package options for the AD7686CRMZ?
The AD7686CRMZ is available in 10-lead MSOP and 10-lead LFCSP packages.
- What is the operating temperature range of the AD7686CRMZ?
The operating temperature range is −40°C to +85°C.
- Is the AD7686CRMZ compatible with different logic voltages?
Yes, it is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using the separate supply VIO.
- What is the standby current of the AD7686CRMZ?
The standby current is 1 nA.
- Can multiple AD7686CRMZ ADCs be daisy-chained?
Yes, multiple ADCs can be daisy-chained on a single 3-wire bus using the SPI-compatible serial interface.
- What is the power dissipation of the AD7686CRMZ at different throughputs?
The power dissipation is 3.75 µW at 5 V/100 SPS, 3.75 mW at 5 V/100 kSPS, and 15 mW at 5 V/500 kSPS.
