MAX7430EUB+T Maxim Integrated Products, MAX7430EUB+T Datasheet - Page 6

• Manufacturer Part Number: MAX7430EUB+T
• Description: IC FILTER VIDEO SD 10-UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX7430EUB+T

• Filter Type: Low Pass
• Frequency - Cutoff Or Center: 5MHz
• Number Of Filters: 2
• Max-order: 6th
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP Exposed Pad, 10-HMSOP, 10-eMSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX7428/MAX7430/MAX7432A filter and buffer the
outputs of DAC encoder chipsets that process digital
video information in applications such as set-top boxes,
hard-disk recorders, DVD players, recorders, and digi-
tal VCRs. These devices also filter and “clean-up” ana-
log video signals. Each channel in the MAX7428/
MAX7430/MAX7432A includes an input mux to select
the input channel, a 6th-order Sallen-Key filter with four
adjustable high-frequency boost levels, an output
buffer with a 6dB gain, a sync detector and clamp, and
an external resistor to set internal bias levels. Output
disable adds additional multiplexing in a wired-OR con-
figuration. Filter bypass, in conjunction with the two
inputs, can be used to provide filtered and unfiltered
video signal processing. Maxim’s Single Pin Bus
Standard Definition Video Reconstruction
Filters and Buffers
6
Figure 1. MAX7428 Typical Application Circuit
MAX7432A
_______________________________________________________________________________________
13
14
—
—
—
—
MAX7430
ENCODER
D/A
D/A
PIN
10
—
—
—
—
9
Detailed Description
0.1μF
0.1μF
MAX7428
*1MΩ
*1MΩ
—
2
1
3
5
8
SYNCIO
INA
INB
GND
NAME
OUT1
OUT
V
INA
INB
CC
MAX7428
V
5V
CC
SYNCIO
Buffer Output 1
+5V Supply Voltage
Video Input A. Use a 0.1µF series input capacitor for proper operation.
Video Input B. Use a 0.1µF series input capacitor for proper operation.
Sync Pulse Input or Output
Buffer Output
DATA
REXT
OUT
(MSPB) interface controls all of the above features. An
external capacitor is used to assign each device a
unique address that allows control of up to 16 devices
on the same bus. Typical application circuits for the
MAX7428/MAX7430/MAX7432A are shown in Figures 1,
2, and 3.
Use a 0.1µF ceramic capacitor to AC-couple the input
to the MAX7428/MAX7430/MAX7432A. This input
capacitor stores a DC level to level-shift the input signal
to an optimal point between V
bit on the Control Register sets which channel (IN_A or
IN_B) is selected (Control Register section). The IN_A
and IN_B inputs have a typical input resistance of
50kΩ.
75Ω
75Ω
10kΩ
***
300kΩ
C1
SYNC PULSE
IN OR OUT
**220μF
**220μF
Pin Description (continued)
5V
SERIAL I/O
FUNCTION
C1 = 1nF TO 1μF (SEE TABLE 3)
*NEEDED ONLY IN FILTER BYPASS MODE
**OPTIONAL CAPACITOR
***ONLY ONE PULLUP RESISTOR NEEDED PER BUS
Z
Z
0
0
=
=
75Ω
75Ω
Input Considerations
CC
and GND. The ABSEL
75Ω
75Ω