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參數資料
| 型號： | MAX4549EAX+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 1/20頁 |
| 文件大小： | 0K |
| 描述： | IC AUD/VIDCROSSPOINT SWIT 36SSOP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 1,000 |
| 功能： | 音頻/視頻交叉點開關 |
| 電路： | 3 x 3:2 |
| 導通狀態(tài)電阻： | 35 歐姆 |
| 電壓電源： | 單電源 |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 5.5 V |
| 電流 - 電源： | 6µA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 36-BSOP（0.295"，7.50mm 寬） |
| 供應商設備封裝： | 36-SSOP |
| 包裝： | 帶卷 (TR) |
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
General Description
The MAX4548/MAX4549 serial-interface, programmable,
triple 3x2 audio/video crosspoint switches are ideal for
multimedia applications. The devices include three
crosspoint switch matrices, each containing three inputs
and two outputs. To improve off-isolation, each switch
matrix has a shunt input and each output is selectively
programmable for clickless or regular-mode operation. A
selectable set of internal resistive voltage dividers sup-
plies DC bias for each output when using AC-coupled
inputs. To improve crosstalk, the voltage dividers include
four externally accessible bypass points.
The MAX4548/MAX4549 feature 35
max on-resis-
tance, 7
on-resistance matching between channels,
5
on-resistance flatness, and 0.07% total harmonic
distortion (THD). Additionally, they feature off-isolation
of -85dB at 20kHz and -72dB at 10MHz, with crosstalk
of -85dB at 20kHz and -55dB at 10MHz. The MAX4548
uses a 2-wire I2C-compatible serial interface, while
the MAX4549 uses a 3-wire SPI/QSPI/MICROWIRE-
compatible serial interface. These parts are available in
36-pin SSOP packages and are specified for the
extended (-40°C to +85°C) operating range.
Applications
Set-Top Boxes
PC Multimedia Boards
Video Conferencing Systems
High-End Audio Systems
Security Systems
Features
o Selectable Soft-Switching Mode for “Clickless”
Audio Operation
o 22
Typical On-Resistance (+5V Supply)
o 5
Typical On-Resistance Matching Between
Channels
o 2
Typical On-Resistance Flatness
o Audio Performance
-85dB Off-Isolation at 20kHz
-85dB Crosstalk at 20kHz
0.07% THD with 600
Load
o Video Performance
-72dB Off-Isolation at 10MHz
-55dB Crosstalk at 10MHz
o Serial Interface
2-Wire I2C-Compatible (MAX4548)
3-Wire SPI/QSPI/MICROWIRE-Compatible
(MAX4549)
o Single-Supply Operation from +2.7V to +5.5V
MAX4548/MAX4549
Serially Controlled, Triple 3x2 Audio/Video
Crosspoint Switches
________________________________________________________________
Maxim Integrated Products
1
36
35
34
33
32
31
30
29
28
27
26
25
24
23
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CBIASL
COM1C
MID5
COM2C
GND
COM1A
ABIASH
MID1
COM1B
MID2
COM2A
MID3
COM2B
MID4
N03B
N03A
SB
N02B
NO2A
SA
N01B
NO1A
V+
NO3C
SC
NO2C
CBIASH
NO1C
SSOP
TOP VIEW
MAX4548
MAX4549
22
21
20
19
15
16
17
18
A1 (DOUT)
( ) ARE FOR MAX4549
ABIASL
V+
A0 (CS)
SCL (SCLK)
SDA (DIN)
GND
19-1496; Rev 0; 6/99
PART
MAX4548EAX
MAX4549EAX
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
36 SSOP
Pin Configuration
Ordering Information
Functional Diagram appears at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
I2C is a trademark of Philips Corp.
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