AD9480_15 Datasheet, PDF (1/28 Pages) Analog Devices – 8-Bit, 250 MSPS 3.3 V A/D Converter

FEATURES
DNL = ± 0.25 LSB
INL = ± 0.26 LSB
Single 3.3 V supply operation (3.0 V to 3.6 V)
Power dissipation of 590 mW at 250 MSPS
1 V p-p analog input range
Internal 1.0 V reference
Single-ended or differential analog inputs
LVDS outputs (ANSI 644 levels)
Power-down mode
Clock duty-cycle stabilizer
APPLICATIONS
Digital oscilloscopes
Instrumentation and measurement
Communications
Point-to-point radios
Predistortion loops
GENERAL DESCRIPTION
The AD9480 is an 8-bit, monolithic analog-to-digital converter
(ADC) optimized for high speed and low power consumption.
Small in size and easy to use, the product operates at a
250 MSPS conversion rate, with excellent linearity and dynamic
performance over its full operating range.
To minimize system cost and power dissipation, the AD9480
includes an internal reference and track-and-hold circuit. The
user only provides a 3.3 V power supply and a differential
encode clock. No external reference or driver components are
required for many applications.
The digital outputs are LVDS (ANSI 644) compatible with an
option of twos complement or binary output format. The
output data bits are provided in parallel fashion along with an
LVDS output clock, which simplifies data capture.
Fabricated on an advanced BiCMOS process, the AD9480 is
available in a 44-lead surface-mount package (TQFP) specified
over the industrial temperature range −40°C to +85°C.
8-Bit, 250 MSPS
3.3 V A/D Converter
AD9480
FUNCTIONAL BLOCK DIAGRAM
VREF SENSE
AGND DrGND DRVDD AVDD
REFERENCE
AD9480
VIN+
VIN–
T&H
8-BIT
ADC
8
PIPELINE
CORE
16
LVDS
D7–D0
(LVDS)
CLK+
CLK–
CLOCK
MGMT
LOGIC
DCO+
DCO-
(LVDS)
PDWN
S1
LVDSBIAS
Figure 1.
PRODUCT HIGHLIGHTS
1. Superior linearity. A DNL of ±0.25 makes the AD9480
suitable for instrumentation and measurement
applications.
2. Power-down mode. A power-down function may be
exercised to bring total consumption down to 15 mW.
3. LVDS outputs (ANSI-644). LVDS outputs simplify timing
and improve noise performance
Rev. A
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