ISLA112P50

12-Bit, 500MSPS A/D Converter

Product Status: Mass Production

OVERVIEW

The ISLA112P50 is a low-power, high-performance, 500MSPS analog-to-digital converter designed with Intersil's proprietary FemtoCharge ™ technology on a standard CMOS process. The ISLA112P50 is part of a pin-compatible portfolio of 8, 10 and 12-bit A/Ds. This device an upgrade of the KAD551XP-50 product family and is pin similar.

The device utilizes two time-interleaved 250MSPS unit A/Ds to achieve the ultimate sample rate of 500MSPS. A single 500MHz conversion clock is presented to the converter, and all interleave clocking is managed internally. The proprietary Intersil Interleave Engine (I2E) performs automatic fine correction of offset, gain, and sample time skew mismatches between the unit A/Ds to optimize performance. No external interleaving algorithm is required.

A serial peripheral interface (SPI) port allows for extensive configurability of the A/D. The SPI also controls the interleave correction circuitry, allowing the system to issue continuous calibration commands as well as configure many dynamic parameters.

Digital output data is presented in selectable LVDS or CMOS formats. The ISLA112P50 is available in a 72 Ld QFN package with an exposed paddle. Performance is specified over the full industrial temperature range (-40°C to +85°C).

KEY FEATURES

  • 1.15GHz Analog Input Bandwidth
  • 90fs Clock Jitter
  • Automatic Fine Interleave Correction Calibration
  • Multiple Chip Time Alignment Support via the Synchronous Clock Divider Reset
  • Programmable Gain, Offset and Skew Control
  • Over-Range Indicator
  • Clock Phase Selection
  • Nap and Sleep Modes
  • Two's Complement, Gray Code or Binary Data Format
  • DDR LVDS-Compatible or LVCMOS Outputs
  • Programmable Test Patterns and Internal Temperature Sensor

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISLA112P50
Basic Information
Production Status
Mass Production
# of Devices/ Channels
1
Resolution Bits
12
Max Conversion Rate MSPS
500
SNR (dbFS)
65.9
SFDR (dB)
84
Power Consumption (mW)
455
Input BW
1150 MHz
Input VIN (Range) (VPP, differential)
1.45
Output Interface
LVDS/LVCMOS
Integral NonLinearity LSB
0.8
Differential NonLinearity LSB
0.3
Analog Supply Voltage V
1.8
Digital Supply Voltage V
1.8
Qualification Level
Standard
Temperature Range
-40 to +85

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