Overview
The AD7685CRMZ is a high-performance, 16-bit successive approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This ADC is known for its low power consumption, high speed, and precision, making it suitable for a variety of applications. It operates from a single power supply between 2.3 V and 5.5 V and is compatible with 1.8 V to 5 V digital logic families. The AD7685CRMZ features a pseudo-differential analog input range from 0 V to VREF, with VREF up to VDD, and includes an on-chip track-and-hold circuit with no pipeline delay or latency.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Throughput | Up to 250 kSPS |
| Integral Nonlinearity (INL) | ±0.6 LSB typical, ±2 LSB maximum |
| Signal-to-Noise and Distortion Ratio (SINAD) | 93.5 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 | 2.3 V to 5.5 V |
| Logic Interface Voltage | 1.8 V to 5 V |
| Package | 10-Lead MSOP or 10-Lead LFCSP (3mm x 3mm) |
| Operating Temperature Range | −40°C to +85°C |
| Power Dissipation | 1.4 µW at 2.5 V/100 SPS, 1.35 mW at 2.5 V/100 kSPS, 4 mW at 5 V/100 kSPS |
| Standby Current | 1 nA |
Key Features
- No missing codes and high accuracy with ±0.6 LSB typical INL.
- High-speed operation with throughput up to 250 kSPS.
- Pseudo-differential analog input range from 0 V to VREF (up to VDD).
- Single-supply operation with power supply range from 2.3 V to 5.5 V.
- Compatible with 1.8 V to 5 V digital logic families.
- Low power consumption with power dissipation scaling linearly with throughput.
- On-chip track-and-hold circuit with no pipeline delay or latency.
- SPI-compatible serial interface with daisy-chain capability and optional BUSY indicator.
- Available in 10-lead MSOP and 10-lead LFCSP packages.
Applications
The AD7685CRMZ is ideal for multiple multiplexed channel applications due to its on-chip track-and-hold circuit and the absence of pipeline delay or latency. It is suitable for use in various systems requiring high precision and low power consumption, such as industrial control systems, medical devices, and data acquisition systems.
Q & A
- What is the resolution of the AD7685CRMZ ADC?
The AD7685CRMZ has a 16-bit resolution. - What is the maximum throughput of the AD7685CRMZ?
The maximum throughput is up to 250 kSPS. - What is the typical INL of the AD7685CRMZ?
The typical Integral Nonlinearity (INL) is ±0.6 LSB. - What is the power supply range for the AD7685CRMZ?
The power supply range is from 2.3 V to 5.5 V. - What types of packages are available for the AD7685CRMZ?
The AD7685CRMZ is available in 10-lead MSOP and 10-lead LFCSP (3mm x 3mm) packages. - What is the operating temperature range of the AD7685CRMZ?
The operating temperature range is from −40°C to +85°C. - Does the AD7685CRMZ have a pipeline delay?
No, the AD7685CRMZ does not exhibit any pipeline delay or latency. - How does the power dissipation of the AD7685CRMZ scale?
The power dissipation scales linearly with throughput. - What is the standby current of the AD7685CRMZ?
The standby current is 1 nA. - Is the AD7685CRMZ compatible with different logic voltages?
Yes, it is compatible with 1.8 V to 5 V digital logic families.
