MAX7428_06 Datasheet, PDF (1/21 Pages) Maxim Integrated Products – Standard Definition Video Reconstruction Filters and Buffers

xx-xxxx; Rev 0; 2/06
Standard Definition Video Reconstruction
Filters and Buffers
General Description
The MAX7428/MAX7430/MAX7432A filters are low-cost,
high-performance replacements for standard discrete fil-
ter and buffer solutions. The MAX7428/MAX7430/
MAX7432A are ideal for anti-aliasing and DAC smooth-
ing video applications, when analog video is reconstruct-
ed from a digital data stream. These devices require a
single +5V supply and the filters have a cutoff frequency
optimized for NTSC, PAL, and standard definition digital
TV (SDTV) video signals. The MAX7428/MAX7430/
MAX7432A feature Maxim’s single-pin bus (MSPB™)
interface to digitally control channel selection (IN_A or
IN_B), adjust high-frequency boost, bypass the filter,
configure luma vs. chroma operation, and control the
output disable. The MAX7428 single-channel filter is
ideal for composite (CVBS) video signals. The MAX7430
dual filter is optimized for S-Video (Y/C) applications. The
MAX7432A triple filter is optimized for component (YP_bP_r
or embedded synchronous RGB) video signals. The
MAX7428 is available in a tiny 8-pin SOT23 package, the
MAX7430 is available in a miniature 10-pin µMAX^® pack-
age, and the MAX7432A is available in a 14-pin TSSOP
package. The MAX7428/MAX7430/MAX7432A are fully
specified over the -40°C to +85°C extended temperature
range.
Applications
Set-Top Boxes
DVD Players
Hard-Disk Recorders
Camcorders
Features
♦ Ideal for CVBS, Y/C (S-Video), and RGB (Y P_b P_r)
Outputs for NTSC, PAL, and SDTV
♦ 6th-Order Lowpass Filter
♦ Drives Two 150Ω Video Loads
♦ Four Levels of Passband High-Frequency
Boost Control
♦ Input 2 to 1 Multiplexer
♦ Output Disable
♦ Filter Bypassing
♦ +5V Single-Supply Voltage
♦ Tiny 8-Pin SOT23 Package (MAX7428), 10-Pin
µMAX Package (MAX7430), and 14-Pin TSSOP
Package (MAX7432A)
Ordering Information
PART
TEMP
RANGE
MAX7428EKA-T -40°C to +85°C
MAX7430EUB -40°C to +85°C
MAX7432AEUD -40°C to +85°C
PIN-
PACKAGE
8 SOT23-8
10 µMAX
14 TSSOP
TOP
MARK
AAIU
—
—
MSPB is a trademark of Maxim Integrated Products, Inc.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Pin Configurations appear at end of data sheet.
Functional Diagrams
V_CC
SYNCIO
SYNC
MAX7428
SERIAL INTERFACE
AND CONTROL
DATA
C_IN
D/A
INA
6TH-ORDER
FILTER
75Ω _*
+6dB
OUT
75Ω
ENCODER
C_IN
LEVEL SHIFT
BIAS GENERATOR
INB
AUX INPUT
GND
REXT
*
*OPTIONAL
Functional Diagrams continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.