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XRD8775AIU Datasheet

  • XRD8775AIU

  • CMOS 8-Bit High Speed Analog-to-Digital Converter

  • 15頁

  • EXAR   EXAR

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CMOS 8-Bit High Speed
Analog-to-Digital Converter
April 2002-4
XRD8775
FEATURES
路 8-Bit Resolution
路 Up to 20MHz Sampling Rate
路 Internal S/H Function
路 Single Supply: 5V
路 V
IN
DC Range: 0V to V
DD
路 V
REF
DC Range: 1V to V
DD
路 Low Power: 75mW typ. (excluding reference)
路 Latch-Up Free
路 ESD Protection: 2000V Minimum
路 3V Version: XRD87L75
路 Small 20-Pin SOIC/SSOP Packages
APPLICATIONS
路 Digital Color Copiers
路 Cellular Telephones
路 CCD-Based Systems
路 Hardware Scanners
路 Video Capture Boards
GENERAL DESCRIPTION
The XRD8775 is an 8-bit Analog-to-Digital Converter in
a small 20-pin SOIC/SSOP package. Designed using
an advanced 5V CMOS process, this part offers excel-
lent performance, low power consumption and latch-up
free operation.
This device uses a two-step flash architecture to
maintain low power consumption at high conversion
rates. The input circuitry of the XRD8775 includes an
on-chip S/H function and allows the user to digitize
analog input signals between AGND and AV
DD
. Careful
design and chip layout have achieved a low analog input
capacitance. This reduces 鈥渒ickback鈥?and eases the
requirements of the buffer/amplifier used to drive the
XRD8775.
The designer can choose the internally generated
reference voltages by connecting V
RB
to V
RBS
and V
RT
to
V
RTS
, or provide external reference voltages to the V
RB
and V
RT
pins. The internal reference generates 0.6V at
V
RB
and 2.6V at V
RT
. Providing external reference
voltages allows easy interface to any input signal range
between GND and V
DD
. This also allows the system to
adjust these voltages to cancel zero scale and full
scale errors, or to change the input range as needed.
The device operates from a single +5V supply. Power
consumption is 75mW at F
S
= 15MHz.
Specified for operation over the commercial / industrial
(-40 to +85擄C) temperature range, the XRD8775 is
available in Surface Mount (SOIC), Shrink Small Out-
line (SSOP) and Plastic Dual-In-line (PDIP) Packages.
SIMPLIFIED BLOCK AND TIMING DIAGRAM
Rev. 4.00
EXAR
Corporation, 48720 Kato Road, Fremont, CA 94538
鈥?/div>
(510) 668-7000
鈥?/div>
FAX (510) 668-7017

XRD8775AIU 產品屬性

  • XRD8775

  • 66

  • 集成電路 (IC)

  • 數據采集 - 模數轉換器

  • -

  • 8

  • 20M

  • 并聯(lián)

  • 1

  • 650mW

  • 模擬和數字

  • -40°C ~ 85°C

  • 表面貼裝

  • 20-SSOP（0.209"，5.30mm 寬）

  • 20-SSOP

  • 管件

  • *

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