MAX1420:12-Bit, 60Msps, +3.3V, Low-Power ADC with Internal Reference

The MAX1420, 3.3V, 12-bit analog-to-digital converter (ADC) features a fully-differential input, pipelined, 12-stage ADC architecture with wideband track-and-hold (T/H) and digital error correction, incorporating a fully-differential signal path. The MAX1420 is optimized for low-power, high dynamic performance applications in imaging and digital communications. The converter operates from a single 3.3V supply, and consumes only 221mW. The fully-differential input stage has a small signal -3dB bandwidth of 400MHz and may be operated with single-ended inputs. An internal 2.048V precision bandgap reference sets the full-scale range of the ADC. A flexible reference structure accommodates an internal reference, or externally applied buffered or unbuffered reference for applications that require increased accuracy and a different input voltage range. In addition to low operating power, the MAX1420 features two power-down modes: reference power-down and shutdown mode. In reference power-down, the internal bandgap reference is deactivated, which results in a typical 2mA supply current reduction. A full shutdown mode is available to maximize power savings during idle periods. The MAX1420 provides parallel, offset binary, CMOS-compatible three-state outputs. The MAX1420 is available in a 7mm x 7mm x 1.4mm, 48-pin TQFP package, and is specified over the commercial (0°C to +70°C) and the extended industrial (-40°C to +85°C) temperature range. Pin-compatible lower speed versions of the MAX1420 are also available. Please refer to the MAX1421 data sheet for 40Msps and the MAX1422 data sheet for 20Msps.

Key Features
  • 3.3V Single Power Supply
  • 67dB SNR at fIN = 5MHz
  • 66dB SNR at fIN = 15MHz
  • Internal 2.048V Precision Bandgap Reference
  • Differential, Wideband Input T/H Amplifier
  • Power-Down Modes
    • 218mW (Reference Shutdown Mode)
    • 10µW (Shutdown Mode)
  • Space-Saving 48-Pin TQFP Package
MAX1420: Functional Diagram
MAX1420: Functional Diagram
Applications/Uses
  • CCD Pixel Processing
  • IF and Baseband Digitization
  • IR Focal Plane Arrays
  • Medical Ultrasound Imaging
  • Radar
DataSheet
titleDownload file
MAX1420 Data SheetMAX1420.pdf
Parametrics
Part NumberInput Chan.Resolution
(bits)
Sample Rate
(Msps)
AC Specs
(MHz)
SFDR
(dBc)
ENOB
(bits)
SINAD
(dB)
SNR
(dB)
THD
(dB)
DNL
(±LSB)
INL
(±LSB)
Full Pwr. BW
(MHz)
ICC
(mA)
Data Bus InterfacePackage/Pins
max ≥@ fINminminmintyp
MAX142011260157210.26366-691215075µP/12LQFP/48
Design kits & evaluation modules
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1420CCM+DNo Longer AvailableLQFP;48 pin0°C to +70°CSee data sheet
MAX1420CCM+TDNo Longer AvailableLQFP;48 pin0°C to +70°CSee data sheet
MAX1420CCM-DNo Longer AvailableMAX1420ECM+LQFP,;48 pin;82.8 mm²0°C to +70°CNo
MAX1420CCM-TDNo Longer AvailableMAX1420ECM+LQFP;48 pin0°C to +70°CSee data sheet
MAX1420ECM+ActiveLQFP,;48 pin;82.8 mm²-40°C to +85°CLead Free
MAX1420ECM+DNo Longer AvailableMAX1420ECM+LQFP,;48 pin;82.8 mm²-40°C to +85°CLead Free
MAX1420ECM+TNo Longer AvailableLQFP,;48 pin;82.8 mm²-40°C to +85°CLead Free
MAX1420ECM+TDNo Longer AvailableMAX1420ECM+LQFP;48 pin-40°C to +85°CSee data sheet
MAX1420ECM-DNo Longer AvailableMAX1420ECM+LQFP,;48 pin;82.8 mm²-40°C to +85°CNo
MAX1420ECM-TDNo Longer AvailableMAX1420ECM+TLQFP,;48 pin;82.8 mm²-40°C to +85°CNo
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MAX1420.pdf MAX1420
MAX1420.pdf MAX1420
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