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Dual 10-Bit, 120Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs

Dual 10-Bit ADC Delivers Excellent Dynamic Performance at Low Power

Product Details

Key Features

Parametric specs for High-Speed ADCs (> 5Msps)
Resolution (bits) 10
# Input Channels 2
Sample Rate (Msps) (max) 120
Data Bus Interface µP/10
SFDR (dBc) (min) 67
SINAD (dB) 57.5
SNR (dB) 58.5
THD (dB) -65
DNL (±LSB) 0.66
INL (±LSB) 3
Package/Pins TQFP/48
Budgetary
Price (See Notes)
27.89
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Simplified Block Diagram

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Parameters

Parametric specs for High-Speed ADCs (> 5Msps)
Resolution (bits) 10
# Input Channels 2
Sample Rate (Msps) (max) 120
Data Bus Interface µP/10
SFDR (dBc) (min) 67
SINAD (dB) 57.5
SNR (dB) 58.5
THD (dB) -65
DNL (±LSB) 0.66
INL (±LSB) 3
Package/Pins TQFP/48
Budgetary
Price (See Notes)
27.89

Key Features

  • Single 3.3V Operation
  • Excellent Dynamic Performance
    • 57dB SINAD at fIN = 60MHz
    • 64dBc SFDR at fIN = 60MHz
  • -71dBc Interchannel Crosstalk at fIN = 60MHz
  • Low Power
    • 492mW (Normal Operation)
    • 10mW (Sleep Mode)
    • 3.3µW (Shutdown Mode)
  • 0.08dB Gain and 0.8° Phase Matching
  • Wide ±1VP-P Differential Analog Input Voltage Range
  • 400MHz -3dB Input Bandwidth
  • On-Chip 2.048V Precision Bandgap Reference
  • User-Selectable Output Format—Two's Complement or Offset Binary
  • Pin-Compatible, Lower-Speed, 10-Bit and 8-Bit Versions Available

Applications/Uses

  • Baseband I/Q Sampling
  • Battery-Powered Instrumentation
  • Multichannel IF Sampling
  • Set-Top Boxes
  • Ultrasound and Medical Imaging
  • VSAT Terminals
  • WLAN, WWAN, WLL, MMDS Modems

Description

The MAX1190 is a 3.3V, dual 10-bit analog-to-digital converter (ADC) featuring fully differential wideband track-and-hold (T/H) inputs, driving two ADCs. The MAX1190 is optimized for low power, small size, and high-dynamic performance for applications in imaging, instrumentation, and digital communications. This ADC operates from a single 3.1V to 3.6V supply, consuming only 492mW while delivering a typical signal-to-noise and distortion (SINAD) of 57dB at an input frequency of 60MHz and a sampling rate of 120Msps. The T/H driven input stages incorporate 400MHz (-3dB) input amplifiers. The converters can also be operated with single-ended inputs. In addition to low operating power, the MAX1190 features a 3mA sleep mode, as well as a 1µA power-down mode to conserve power during idle periods.

An internal 2.048V precision bandgap reference sets the full-scale range of the ADC. A flexible reference structure allows the use of this internal or an externally applied reference, if desired, for applications requiring increased accuracy or a different input voltage range.

The MAX1190 features parallel, CMOS-compatible three-state outputs. The digital output format can be set to two's complement or straight offset binary through a single control pin. The device provides for a separate output power supply of 1.7V to 3.6V for flexible interfacing with various logic families. The MAX1190 is available in a 7mm x 7mm, 48-pin TQFP-EP package, and is specified for the extended industrial (-40°C to +85°C) temperature range.

Pin-compatible lower speed versions of the MAX1190 are also available. Refer to the MAX1180–MAX1184 data sheets for 105Msps/80Msps/65Msps/40Msps. In addition to these speed grades, this family includes two multiplexed output versions (MAX1185/MAX1186 for 20Msps/40Msps), for which digital data is presented time-interleaved and on a single, parallel 10-bit output port.

For lower speed, pin-compatible, 8-bit versions of the MAX1190, refer to the MAX1195–MAX1198 data sheets.

Simplified Block Diagram

MAX1190: Functional Diagram MAX1190: Functional Diagram Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .