8-/4-/2-Channel, 14-Bit, Simultaneous-Sampling ADCs with ±10V, ±5V, and 0 to +5V Analog Input Ranges

 

Part Number	Replacement	Explanation

Description

Create a design and simulate using EE-Sim^® tools:

The MAX1316–MAX1318/MAX1320–MAX1322/MAX1324–MAX1326 14-bit, analog-to-digital converters (ADCs) offer two, four, or eight independent input channels. Independent track/hold (T/H) circuitry provides simultaneous sampling for each channel. The MAX1316/MAX1317/MAX1318 have a 0 to +5V input range with ±6.0V fault-tolerant inputs. The MAX1320/MAX1321/MAX1322 have a ±5V input range with ±16.5V fault-tolerant inputs. The MAX1324/MAX1325/MAX1326 have a ±10V input range with ±16.5V fault-tolerant inputs. These ADCs convert two channels in 2µs, and up to eight channels in 3.8µs, and have an 8-channel throughput of 250ksps per channel. Other features include a 10MHz T/H input bandwidth, internal clock, internal (+2.5V) or external (+2.0V to +3.0V) reference, and power-saving modes.

A 16.6MHz, 14-bit, bidirectional, parallel interface provides the conversion results and accepts digital configuration inputs.

These devices operate from a +4.75V to +5.25V analog supply and a separate +2.7V to +5.25V digital supply, and consume less than 50mA total supply current.

These devices come in a 48-pin TQFP package and operate over the extended -40°C to +85°C temperature range.

MAX1316, MAX1317, MAX1318, MAX1320, MAX1321, MAX1322, MAX1324, MAX1325, MAX1326: Functional Diagram Enlarge+

Key Features

• 8-/4-/2-Channel, 14-Bit ADCs
  • ±1.5 LSB INL, ±1 LSB DNL, No Missing Codes
  • 90dBc SFDR, -86dBc THD, 76.5dB SINAD, 77dB SNR at 100kHz Input
• On-Chip T/H Circuit for Each Channel
  • 10ns Aperture Delay
  • 50ps Channel-to-Channel T/H Matching
• Fast Conversion Time
  • One Channel in 1.6µs
  • Two Channels in 1.9µs
  • Four Channels in 2.5µs
  • Eight Channels in 3.7µs
• High Throughput
  • 526ksps/ch for One Channel
  • 455ksps/ch for Two Channels
  • 357ksps/ch for Four Channels
  • 250ksps/ch for Eight Channels
• Flexible Input Ranges
  • 0 to +5V (MAX1316/MAX1317/MAX1318)
  • ±5V (MAX1320/MAX1321/MAX1322)
  • ±10V (MAX1324/MAX1325/MAX1326)
• No Calibration Needed
• 14-Bit, High-Speed, Parallel Interface
• Internal or External Clock
• +2.5V Internal Reference or +2.0V to +3.0V External Reference
• +5V Analog Supply, +3V to +5V Digital Supply
  • 46mA Analog Supply Current (typ)
  • 1.6mA Digital Supply Current (max)
  • Shutdown and Power-Saving Modes
• 48-Pin TQFP Package (7mm x 7mm Footprint)

Applications/Uses

• Multiphase Motor Control
• Power-Factor Monitoring and Correction
• Power-Grid Synchronization
• Vibration and Waveform Analysis