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参数资料
| 型号： | MAX7428EKA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 18/21页 |
| 文件大小： | 0K |
| 描述： | IC FILTER BUFFER VID SOT23-8 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 视频滤波器 |
| 应用： | 录音机，机顶盒 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-8 |
| 供应商设备封装： | SOT-23-8 |
| 包装： | 带卷 (TR) |
D/A
0.1
μF
0.1
μF
INA
INB
GND
ENCODER
75
Ω
75
Ω
75
Ω
**220
μF
75
Ω
C1
300k
Ω
SERIAL I/O
SYNC PULSE
IN OR OUT
OUT
VCC
5V
REXT
DATA
SYNCIO
**220
μF
*1M
Ω
*1M
Ω
MAX7428
Z0 = 75
Ω
Z0 = 75
Ω
5V
10k
Ω
***
C1 = 1nF TO 1
μF (SEE TABLE 3)
*NEEDED ONLY IN FILTER BYPASS MODE
**OPTIONAL CAPACITOR
***ONLY ONE PULLUP RESISTOR NEEDED PER BUS
Figure 1. MAX7428 Typical Application Circuit
MAX7428/MAX7430/MAX7432A
Detailed Description
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
(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.
Input Considerations
Use a 0.1F 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 VCC and GND. The ABSEL
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
50k
Ω.
Standard Definition Video Reconstruction
Filters and Buffers
6
_______________________________________________________________________________________
Pin Description (continued)
PIN
MAX7432A
MAX7430
MAX7428
NAME
FUNCTION
13
9
—
OUT1
Buffer Output 1
14
10
2
VCC
+5V Supply Voltage
—
1
INA
Video Input A. Use a 0.1F series input capacitor for proper operation.
—
3
INB
Video Input B. Use a 0.1F series input capacitor for proper operation.
——
5
SYNCIO
Sync Pulse Input or Output
—
8
OUT
Buffer Output
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| MAX7428EVC16 | 功能描述:有源滤波器 Programmers, Development Systems RoHS:否 制造商:Maxim Integrated 通道数量:1 截止频率:150 KHz 电源电压-最大:11 V 电源电压-最小:4.74 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP N 封装:Tube |
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| MAX742C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX742CPP | 功能描述:直流/直流开关调节器 Switch-Mode Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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