14-Bit, 500MSPS ADC
ISLA214P50
Features
• Automatic Fine Interleave Correction Calibration
• Single Supply 1.8V Operation
• Clock Duty Cycle Stabilizer
The ISLA214P50 is a 14-bit, 500MSPS analog-to-digital converter
designed with Intersil’s proprietary FemtoCharge™ technology on
a standard CMOS process. The ISLA214P50 is part of a
pin-compatible portfolio of 12 to 16-bit A/Ds with maximum
sample rates ranging from 130MSPS to 500MSPS.
• 75fs Clock Jitter
• 700MHz Bandwidth
The device utilizes two time-interleaved 250MSPS unit ADCs 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 correction of offset, gain, and
sample time mismatches between the unit ADCs to optimize
performance.
• Programmable Built-in Test Patterns
• Multi-ADC Support
- SPI Programmable Fine Gain and Offset Control
- Support for Multiple ADC Synchronization
- Optimized Output Timing
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 offline and
continuous calibration commands as well as configure many
dynamic parameters.
• Nap and Sleep Modes
- 200µs Sleep Wake-up Time
• Data Output Clock
• DDR LVDS-Compatible or LVCMOS Outputs
• User-accessible Digital Temperature Monitor
Digital output data is presented in selectable LVDS or CMOS
formats. The ISLA214P50 is available in a 72 Ld QFN package
with an exposed paddle. Operating from a 1.8V supply,
performance is specified over the full industrial temperature
range (-40°C to +85°C).
Applications
• Radar Array Processing
• Software Defined Radios
• Broadband Communications
• High-Performance Data Acquisition
• Communications Test Equipment
Key Specifications
• SNR @ 500MSPS
= 72.7dBFS f = 30MHz
IN
= 70.6dBFS f = 363MHz
IN
• SFDR @ 500MSPS
= 84dBc f = 30MHz
IN
= 76dBc f = 363MHz
IN
• Total Power Consumption = 835mW @ 500MSPS
Pin-Compatible Family
SPEED
(MSPS)
MODEL
RESOLUTION
CLKP
CLKN
CLKOUTP
CLOCK
MANAGEMENT
ISLA216P25
ISLA216P20
ISLA216P13
ISLA214P50
ISLA214P25
ISLA214P20
ISLA214P13
ISLA212P50
ISLA212P25
ISLA212P20
ISLA212P13
16
16
16
14
14
14
14
12
12
12
12
250
200
130
500
250
200
130
500
250
200
130
CLKOUTN
14-BIT
250 MSPS
ADC
D[13:0]P
D[13:0]N
SHA
VREF
ORP
ORN
VINP
VINN
Gain, Offset
and Skew
Adjustments
DIGITAL
ERROR
CORRECTION
I2E
14-BIT
250 MSPS
ADC
SHA
VREF
+
–
VCM
SPI
CONTROL
March 15, 2011
FN7571.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2011. All Rights Reserved
Intersil (and design) and FemtoCharge are trademarks owned by Intersil Corporation or one of its subsidiaries.
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