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AD4684BCPZ: 1 MSPS, 4-channel 16-bit dual-channel synchronous sampling SAR ADC

This device has the following main characteristics:

16-bit dual-channel synchronous sampling SAR ADC

Single-ended analog input

4 channels, using a 2:1 multiplexer

Channel timing controller mode

Throughput rate: 1 MSPS

SNR (Typical Value)

87.5 dB, VREF = 3.3 V (external)

93 dB, OSR_MODE = 1, OSR = 8, RES = 1, VREF = 2.5 V (internal)

On-chip oversampling function

INL ±1.5 LSB (typical value)

Resolution enhancement function

The internal reference voltage source is 2.5V (maximum value) at 10 ppm/°C

Alarm function

Temperature range: -40 °C to +125°C

16 pins 3 mm × 3 mm LFCSP

Explanation

The AD4684BCPZ is a 16-bit, pin-compatible dual-synchronous sampling, high-speed, low-power, successive approximation register (SAR) and analog-to-digital converter (ADC), with an operating power supply voltage ranging from 3.0V to 3.6V and a throughput of 1 MSPS. The analog input type is single-ended input and sampling and transformation are performed at the falling edge of CS.

The AD4684BCPZ features an on-chip timing controller and an integrated on-chip oversampling module, which can enhance the dynamic range at low bandwidths and reduce noise. It contains a buffered internal 2.5V reference voltage source. Alternatively, an external reference voltage source up to 3.3V can be used. The conversion process and data acquisition use standard control inputs, and thus can be connected to a microprocessor or digital signal processor (DSP). The AD4684BCPZ uses a separate logic power supply and is compatible with 1.8V, 2.5V and 3.3V interfaces.

Basic information

Model: AD4684BCPZ

Type: Analog-to-Digital Converter - ADC

Number of digits: 16

Sampling rate (per second) : 1M

Input number: 4

Input type: Single-ended

Data interface: Serial

Configuration: MUX-ADC

Ratio -S /H:ADC: 0:2

Number of A/D converters: 2

Architecture: SAR

Reference types: External, Internal

Voltage - Power supply, simulation: 3V to 3.6V

Voltage - Power supply, digital: 3V to 3.6V

Feature: Synchronous sampling

Operating temperature: -40°C to 125°C

Package/Shell: 16-LFCSP

Installation type: Surface mount type

These specifications make the AD4684BCPZ suitable for applications that require high precision and high speed conversion, such as data acquisition systems, motor control, sonar systems, etc. ‌. Its high sampling rate and low power consumption characteristics give it an advantage in demanding industrial and scientific research applications.

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