Overview
The AD7687BRMZ is a 16-bit, charge redistribution, successive approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This device operates from a single power supply, VDD, ranging from 2.3 V to 5.5 V. It features a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The ADC also includes a low noise, wide bandwidth, short aperture delay track-and-hold circuit. The device is available in 10-lead MSOP or 10-lead LFCSP packages and is specified to operate from −40°C to +85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Integral Nonlinearity (INL) | ±1.5 LSB |
| Sampling Rate | 250 kSPS |
| Power Supply Range | 2.3 V to 5.5 V |
| Operating Temperature Range | −40°C to +85°C |
| Package Type | 10-Lead MSOP or 10-Lead LFCSP |
| Serial Interface | SPI-compatible, 3-wire bus |
| Logic Compatibility | 1.8 V, 2.5 V, 3 V, or 5 V |
Key Features
- Low power consumption that scales linearly with throughput.
- Internal conversion clock and no missing codes.
- Low noise, wide bandwidth, short aperture delay track-and-hold circuit.
- External reference voltage (VREF) up to the supply voltage.
- SPI-compatible serial interface with daisy-chain capability and optional BUSY indicator.
- Compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using separate supply VIO.
Applications
The AD7687BRMZ is suitable for various applications requiring high precision and low power consumption, such as industrial automation, medical devices, and aerospace. It is particularly useful in systems that require accurate analog-to-digital conversion with minimal power usage and high speed.
Q & A
- What is the resolution of the AD7687BRMZ ADC?
The AD7687BRMZ has a resolution of 16 bits. - What is the sampling rate of the AD7687BRMZ?
The sampling rate is 250 kSPS. - What is the power supply range for the AD7687BRMZ?
The power supply range is from 2.3 V to 5.5 V. - What are the available package types for the AD7687BRMZ?
The device is available in 10-lead MSOP or 10-lead LFCSP packages. - What is the operating temperature range of the AD7687BRMZ?
The operating temperature range is from −40°C to +85°C. - Is the AD7687BRMZ compatible with different logic levels?
Yes, it is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using a separate supply VIO. - Can the AD7687BRMZ be daisy-chained?
Yes, the SPI-compatible serial interface allows for daisy-chaining several ADCs on a single 3-wire bus. - What type of serial interface does the AD7687BRMZ use?
The device uses an SPI-compatible serial interface. - Does the AD7687BRMZ have an internal conversion clock?
Yes, it has an internal conversion clock. - What is the significance of the track-and-hold circuit in the AD7687BRMZ?
The track-and-hold circuit is low noise, wide bandwidth, and has a short aperture delay.
