Rainbow Electronics ADC08351 - Manual

ADC08351
8-Bit, 42 MSPS, 40 mW A/D Converter
General Description
The ADC08351 is an easy to use low power, low cost, small
size, 42 MSPS analog-to-digital converter that digitizes sig-
nals to 8 bits. The ADC08351 uses an unique architecture
that achieves 7.2 Effective Bits with a 4.4 MHz input and
42 MHz clock frequency and 6.8 Effective Bits with a 21 MHz
input and 42 MHz clock frequency. Output formatting is
straight binary coding.
To minimize system cost and power consumption, the
ADC08351 requires minimal external components and in-
cludes input biasing to allow optional a.c. input signal cou-
pling. The user need only provide a +3V supply and a clock.
Many applications require no separate reference or driver
components.
The excellent dc and ac characteristics of this device, to-
gether with its low power consumption and +3V single supply
operation, make it ideally suited for many video and imaging
applications, including use in portable equipment. Total
power consumption is reduced to less than 7 mW in the
power-down mode. Furthermore, the ADC08351 is resistant
to latch-up and the outputs are short-circuit proof.
Fabricated on a 0.35 micron CMOS process, the ADC08351
is offered in TSSOP and LLP (a molded lead frame-based
chip-scale package), and is designed to operate over the
industrial temperature range of −40˚C to +85˚C.
Features
n Low Input Capacitance
n Internal Sample-and-Hold Function
n Single +3V Operation
n Power Down Feature
n TRI-STATE Outputs
Key Specifications
j Resolution 8 Bits
j Maximum Sampling Frequency 42 MSPS (min)
j ENOB @ f
CLK
= 42 MHz, f
IN
= 4.4 MHz 7.2 Bits (typ)
j Guaranteed No Missing Codes
j Power Consumption 40 mW (typ); 48 mW (max)
(Excluding Reference Current)
Applications
n Video Digitization
n Digital Still Cameras
n Set Top Boxes
n Digital Camcorders
n Communications
n Medical Imaging
n Personal Computer Video
n CCD Imaging
n Electro-Optics
Pin Configuration
20-Pin TSSOP 24-Pin LLP (CSP)
10089501
Top View
10089534
Bottom View
November 2003
ADC08351
8-Bit,
42
MSPS,
40
mW
A/D
Converter
© 2003 National Semiconductor Corporation DS100895 www.national.com