AD4685
Info : RECOMMENDED FOR NEW DESIGNS
searchIcon
cartIcon

AD4685

500 kSPS, 4-Channel, 16-Bit Dual, Simultaneous Sampling SAR ADCs

Show More showmore-icon

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $9.75
Features
  • 16-bit dual simultaneous sampling SAR ADC
  • Single-ended analog inputs
  • 4-channel with 2:1 multiplexers
  • Channel sequencer mode
  • Throughput rate
    • 1 MSPS (AD4684)
    • 500 kSPS (AD4685)
  • SNR (typical)
    • 87.5 dB with VREF = 3.3 V external
    • 93 dB with OSR_MODE = 1, OSR = 8, RES = 1, VREF = 2.5 V internal
  • On-chip oversampling functions
  • INL ±1.5 LSB (typical)
  • Resolution boost function
  • 2.5 V internal reference at 10 ppm/°C (maximum)
  • Alert function
  • −40°C to +125°C temperature range
  • 16-lead, 3 mm × 3 mm LFCSP
Additional Details
show more Icon

The AD4684/AD4685 are 16-bit, dual, simultaneous sampling, high speed, successive approximation register (SAR), analog-to-digital converters (ADCs) that operate from a 3.0 V to 3.6 V power supply and feature throughput rates of up to 1 MSPS for the AD4684 and 500 kSPS for the AD4685. The analog input types are single-ended and are sampled and converted on the falling edge of CS.

The AD4684/AD4685 have an on-chip sequencer and integrated on-chip oversampling block to improve dynamic range and reduce noise at lower bandwidths. A buffered internal 2.5 V reference is included. Alternatively, an external reference up to 3.3 V can be used. The conversion process and data acquisition use standard control inputs, allowing interfacing to microprocessors or digital signal processors (DSPs). The AD4684/AD4685 is compatible with 1.8 V, 2.5 V, and 3.3 V interfaces by using the separate logic supply. The AD4684/AD4685 are available in a 16-lead, 3 mm × 3 mm lead frame chip scale package (LFCSP) with operation specified from −40°C to +125°C.

PRODUCT HIGHLIGHTS

  1. 4-channel, dual simultaneous sampling ADC.
  2. Pin-compatible product family.
  3. High throughput rate: 1 MSPS (AD4684) and 500 kSPS (AD4685).
  4. Space-saving, 16-lead, 3 mm × 3 mm LFCSP.
  5. Integrated oversampling block to increase dynamic range and SNR and to reduce SCLK speed requirements.
  6. Single-ended analog inputs.
  7. Small sampling capacitor reduces amplifier drive burden.

 

APPLICATIONS

  • Motor control position feedback
  • Motor control current sense
  • Sonars
  • Power quality
  • Data acquisition systems
  • Erbium doped fiber amplifier (EDFA) applications
  • Inphase and quadrature demodulation
Part Models 2
1ku List Price Starting From $9.75

close icon
Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD4685BCPZ-RL
  • HTML
  • HTML
AD4685BCPZ-RL7
  • HTML
  • HTML
Evaluation Kit

Evaluation Kits 1

reference details image

EVAL-AD7386FMCZ

Evaluating the AD7386 4-Channel 16-Bit, Dual Simultaneous Sampling, SAR ADC

zoom

EVAL-AD7386FMCZ

Evaluating the AD7386 4-Channel 16-Bit, Dual Simultaneous Sampling, SAR ADC

Evaluating the AD7386 4-Channel 16-Bit, Dual Simultaneous Sampling, SAR ADC

Features and Benefits

  • Full featured evaluation board multichannel, simultaneous sampling ADC
  • On-board reference, reference buffer, and ADC driver
  • On-board power supplies
  • Board-compatible high speed system demonstration platform (EVAL-SDP-CH1Z (SDP-H1)) controller
  • PC software for control and data analysis 

Product Detail

The EVAL-AD7386FMCZ is a full featured evaluation board designed to evaluate all the features of the AD7386 analog-to-digital converter (ADC). The evaluation board can be controlled by the EVAL-SDP-CH1Z via the 160-way system demonstration platform connector, P7. The EVAL-SDP-CH1Z board controls the evaluation board through the USB port of the PC using the Analysis Control Evaluation (ACE) software, which is available for download from the ACE software page.

The EVAL-AD7386FMCZ can evaluate the AD7387, AD7388, AD4684, and AD4685 by using the AD738x ACE plugin found on the EVAL-AD7386FMCZ product page. The only difference is the number of SCLKs that clock out the conversion results, which is dependent on the resolution and throughput rate for each generic.

Complete specifications for the AD7386, AD7387, AD7388, AD4684, and AD4685 are provided in the AD7386/AD7387/AD7388 and AD4684/AD4685 data sheets. Consult these specifications in conjunction with the user guide when using the evaluation board. Full details on the EVAL-SDP-CH1Z are available on the SDP-H1 product page. The comprehensive ACE user guide is available on the ACE software page.

Recently Viewed