Features and Benefits
- Single 2.7V to 3.6V Operation
- Excellent Dynamic Performance
- 48.1dB/47.6dB SINAD at fIN = 50MHz/200MHz
- 66dBc/61.5dBc SFDR at fIN = 50MHz/200MHz
- -72dB Interchannel Crosstalk at fIN = 50MHz
- Low Power
- 264mW (Normal Operation)
- 10.6mW (Sleep Mode)
- 0.5µW (Shutdown Mode)
- 0.05dB Gain and ±0.1° 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 8-Bit and 10-Bit Upgrades Available
The MAX1198 is a 3.3V, dual, 8-bit analog-to-digital converter (ADC) featuring fully differential wideband track-and-hold (T/H) inputs, driving two ADCs. The MAX1198 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 2.7V to 3.6V supply, consuming only 264mW, while delivering a typical signal-to-noise and distortion (SINAD) of 48.1dB at an input frequency of 50MHz and a sampling rate of 100Msps. The T/H-driven input stages incorporate 400MHz (-3dB) input amplifiers. The converters may also be operated with single-ended inputs. In addition to low operating power, the MAX1198 features a 3.2mA sleep mode, as well as a 0.15µA 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 MAX1198 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 MAX1198 is available in a 7mm x 7mm, 48-pin TQFP package, and is specified for the extended industrial (-40°C to +85°C) temperature range.
For a 10-bit, pin-compatible upgrade, refer to the MAX1180 data sheet. With the N.C. pins of the MAX1198 internally pulled down to ground, this ADC becomes a drop-in replacement for the MAX1180.
- Baseband I/Q Sampling
- Battery-Powered Applications
- MMDS Modems
- Multichannel IF Sampling
- Set-Top Boxes
- Ultrasound and Medical Imaging
- VSAT Terminals
- WLAN, WWAN, WLL,
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
Coherent Sampling Calculator (CSC)6/25/2004
Differential Gain and Phase—Why Measure It, if You Cannot See It? \r\n5/23/2011
Selecting the Optimum Test Tones and Test Equipment for Successful High-Speed ADC Sinewave Testing12/18/2002
Dynamic Testing of High-Speed ADCs, Part 27/22/2002
Reference Voltage for Multiple ADCs7/4/2002
Coherent Sampling vs. Window Sampling3/29/2002
Defining and Testing Dynamic Parameters in High-Speed ADCs, Part 111/19/2001
Tools & Simulations
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
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