Overview
The AD7685ARMZRL7 is a 16-bit, successive approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the PulSAR® family and is known for its high speed, low power consumption, and versatile serial interface. It operates from a single power supply ranging from 2.3 V to 5.5 V and is compatible with various digital logic families from 1.8 V to 5 V. The AD7685 features an on-chip track-and-hold circuit, internal conversion clock, and no pipeline delay, making it ideal for multiple multiplexed channel applications.
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 Type | 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.
- Low power consumption with power dissipation scaling linearly with throughput.
- On-chip track-and-hold circuit with short aperture delay.
- Internal conversion clock and no pipeline delay.
- Versatile SPI-compatible serial interface with daisy-chain capability and BUSY indicator.
- Pin-for-pin compatibility with other PulSAR® ADCs like AD7686, AD7687, and AD7688.
Applications
The AD7685 is ideal for multiple multiplexed channel applications due to its on-chip track-and-hold circuit and lack of pipeline delay. It is suitable for use in various systems requiring high-speed, low-power ADCs, such as industrial control systems, medical devices, and data acquisition systems.
Q & A
- What is the resolution of the AD7685ARMZRL7 ADC? The AD7685ARMZRL7 has a 16-bit resolution.
- What is the maximum throughput of the AD7685ARMZRL7? The maximum throughput is up to 250 kSPS.
- What is the typical INL of the AD7685ARMZRL7? The typical INL is ±0.6 LSB.
- What is the SINAD of the AD7685ARMZRL7 at 20 kHz? The SINAD is 93.5 dB at 20 kHz.
- What is the power supply range for the AD7685ARMZRL7? The power supply range is from 2.3 V to 5.5 V.
- What are the package options for the AD7685ARMZRL7? The package options are 10-Lead MSOP and 10-Lead LFCSP (3mm x 3mm).
- What is the operating temperature range of the AD7685ARMZRL7? The operating temperature range is from −40°C to +85°C.
- Can the AD7685ARMZRL7 be daisy-chained with other ADCs? Yes, the AD7685ARMZRL7 can be daisy-chained using its SPI-compatible serial interface.
- What is the standby current of the AD7685ARMZRL7? The standby current is 1 nA.
- Is the AD7685ARMZRL7 compatible with different logic voltage levels? Yes, it is compatible with logic voltage levels from 1.8 V to 5 V.
