ADC083000_08 Datasheet, PDF (1/40 Pages) National Semiconductor (TI) – 8-Bit, 3 GSPS, High Performance, Low Power A/D Converter

October 6, 2008
ADC083000
8-Bit, 3 GSPS, High Performance, Low Power A/D
Converter
General Description
The ADC083000 is a single, low power, high performance
CMOS analog-to-digital converter that digitizes signals to 8
bits resolution at sampling rates up to 3.4 GSPS. Consuming
a typical 1.9 Watts at 3 GSPS from a single 1.9 Volt supply,
this device is guaranteed to have no missing codes over the
full operating temperature range. The unique folding and in-
terpolating architecture, the fully differential comparator de-
sign, the innovative design of the internal sample-and-hold
amplifier and the self-calibration scheme enable an excellent
response of all dynamic parameters up to Nyquist, producing
a high 7.0 Effective Number Of Bits, (ENOB) with a 748 MHz
input signal and a 3 GHz sample rate while providing a 10^-18
Word Error Rate. The ADC083000 achieves a 3 GSPS sam-
pling rate by utilizing both the rising and falling edge of a 1.5
GHz input clock. Output formatting is offset binary and the
LVDS digital outputs are compatible with IEEE 1596.3-1996,
with the exception of an adjustable common mode voltage
between 0.8V and 1.15V.
The ADC has a 1:4 demultiplexer that feeds four LVDS buses
and reduces the output data rate on each bus to a quarter of
the sampling rate.
The converter typically consumes less than 25 mW in the
Power Down Mode and is available in a 128-lead, thermally
enhanced exposed pad LQFP and operates over the Indus-
trial (-40°C ≤ T_A ≤ +85°C) temperature range.
Features
■ ^{Single +1.9V ±0.1V Operation}
■ ^{Choice of SDR or DDR output clocking}
■ ^{Serial Interface for Extended Control}
■ ^{Adjustment of Input Full-Scale Range and Offset}
■ ^{Duty Cycle Corrected Sample Clock}
■ ^{Test pattern}
Key Specifications
■ ^Resolution
■ ^{Max Conversion Rate}
■ ^{Error Rate}
■ ^{ENOB @ 748 MHz Input}
■ ^{SNR @ 748 MHz}
■ ^{Full Power Bandwidth}
■ ^{Power Consumption}
— Operating
— Power Down Mode
8 Bits
3 GSPS (min)
10^-18 (typ)
7.0 Bits (typ)
44.5 dB (typ)
3 GHz (typ)
1.9 W (typ)
25 mW (typ)
Applications
■ ^{Direct RF Down Conversion}
■ ^{Digital Oscilloscopes}
■ ^{Satellite Set-top boxes}
■ ^{Communications Systems}
■ ^{Test Instrumentation}
Ordering Information
Industrial Temperature Range
(-40°C < T_A < +85°C)
ADC083000CIYB
ADC083000DEV
NS Package
128-Pin Exposed Pad LQFP
Development System
© 2008 National Semiconductor Corporation 201932
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