EVAL-AD7386-4FMCZ中文資料亞德諾數(shù)據手冊PDF規(guī)格書

GENERAL DESCRIPTION

The AD7386-4/AD7387-4/AD7388-4 are 16-bit, 14-bit, and 12-bit

compatible, quad, simultaneous sampling, high-speed, successive

approximation register (SAR), analog-to-digital converters (ADCs)

operating from a 3.0 V to 3.3 V power supply with throughput rates

up to 4 MSPS. The single-ended analog input accepts voltage from

0 V to VREF, and is sampled and converted on the falling edge of

CS.

The AD7386-4/AD7387-4/AD7388-4 have on-chip oversampling

blocks to improve dynamic range and reduce noise at lower

bandwidths. The oversampling can boost up to two bits of added

resolution. The REFIO pin can have a reference voltage (VREF) of

2.5 V to 3.3 V.

The conversion process and data acquisition use standard control

inputs, allowing easy interfacing to microprocessors or digital signal

processors (DSPs). The conversion result can clock out simultaneously

via 4-wire mode for faster throughput or via 1-wire serial

mode when slower throughput is allowed. The device is compatible

with 1.8 V, 2.5 V, and 3.3 V interfaces using the separate logic supply.

FEATURES

? 16-bit, 14-bit, and 12-bit ADC family

? Quad simultaneous sampling

? Single-ended analog inputs

? High throughput rate: 4 MSPS

? SNR (typical)

? 84.7 dB (AD7386-4) at VREF = 3.3 V

? 82.4 dB (AD7387-4) at VREF = 3.3 V

? 73.7 dB (AD7388-4)

? 92 dB with OSR = 8, VREF = 3.3 V (AD7386-4)

? On-chip oversampling function

? 2-bit resolution boost

? Out of range indicator (ALERT)

? INL (typical)

? ±4 LSB (AD7386-4)

? ±1 LSB (AD7387-4)

? ±0.2 LSB (AD7388-4)

? High-speed serial interface

? Temperature range: ?40°C to +125°C

? 2.5 V internal reference at 10 ppm/°C (maximum)

? 24-lead LFCSP

APPLICATIONS

? Motor control position feedback

? Motor control current sense

? Data acquisition systems

? Erbium doped fiber amplifier (EDFA) applications

? Traveling wave fault detection

? In-phase and quadrature demodulation

PRODUCT HIGHLIGHTS

1. Quad simultaneous sampling and conversion.

2. Pin-compatible product family.

3. High throughput rate, 4 MSPS at 16-bit, 14-bit, and 12-bit.

4. Space-saving, 24-lead LFCSP.

5. Integrated oversampling block to increase dynamic range, reduce

noise, and reduce SCLK speed requirements.

6. Differential analog inputs with wide common-mode range.

7. Small sampling capacitor reduces amplifier drive burden.