參數(shù)資料
型號(hào)： MAX9670CTL+
廠(chǎng)商： Maxim Integrated Products
文件頁(yè)數(shù)： 1/44頁(yè)
文件大?。?/td> 0K
描述： IC AUDIO/VIDEO SWIT DUAL 40TQFN
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 50
功能： 音頻/視頻切換
電路： 2 x SCART
電壓電源： 單電源
電壓 - 電源，單路/雙路(±)： 3.3 V ~ 12 V
工作溫度： 0°C ~ 70°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 40-WFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 40-TQFN-EP（6x6）
包裝： 管件
配用： MAX9670EVKIT+-ND - EVALUATION KIT FOR MAX9670
General Description
The MAX9670/MAX9671 dual SCART matrices route
audio and video signals between a set-top box
decoder chip and two external SCART connectors
under I2C control. Operating from a 3.3V supply and a
12V supply, the MAX9670/MAX9671 consume 66mW
during quiescent operation and 300mW during average
operation when driving typical signals into typical
loads. Video input detection, video load detection, and
a 2.8mW standby mode facilitate the design of intelli-
gent, low-power set-top boxes.
The MAX9670/MAX9671 audio section contains a
buffered crosspoint to route audio inputs to audio out-
puts and programmable volume control from -62dB to
0dB in 2dB steps. The DirectDrive output amplifiers
create a 2VRMS full-scale audio signal biased around
ground, eliminating the need for bulky output capaci-
tors and reducing click-and-pop noise. The zero-cross
detection circuitry also further reduces clicks and pops
by enabling audio sources to switch only during a zero-
crossing. The MAX9671 offers TV left and right audio
inputs.
The MAX9670/MAX9671 video section contains a
buffered crosspoint to route video inputs to video out-
puts. The standard-definition video signals from the set-
top box decoder chip are lowpass filtered to remove
out-of-band artifacts.
The MAX9670/MAX9671 also support slow-switching
and fast-switching signals. An interrupt signal from the
MAX9670/MAX9671 informs the microcontroller when
the system status has changed.
Applications
Set-Top Boxes
TVs
DVD Players
Features
o 66mW Quiescent Power Consumption
o 2.8mW Standby Mode Consumption
o Programmable Audio Gain Control of -62dB to
0dB (TV Audio Outputs)
o Clickless, Popless, DirectDrive Audio
o Video Input and Video Load Detection
o Video Reconstruction Filter with 10MHz Passband
and 52dB Attenuation at 27MHz
o 3.3V and 12V Supply Voltages
MAX9670/MAX9671
Low-Power Audio/Video Switch with Audio
Volume Control for Dual SCART Connectors
________________________________________________________________
Maxim Integrated Products
1
19-4653; Rev 2; 12/10
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
EVALUATION
KIT
AVAILABLE
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
TV R+L
AUDIO
INPUTS
MAX9670CTL+
0°C to +70°C
40 TQFN-EP*
No
MAX9671CTH+
0°C to +70°C
44 TQFN-EP*
Yes
+
Denotes a lead(Pb)-free/RoHS-compliant package.
*
EP = Exposed pad.
DirectDrive is a registered trademark of Maxim Integrated
Products, Inc.
Typical Application Circuit appears at end of data sheet.
I2C INTERFACE
REGISTERS AND
ACTIVITY
MONITOR
VIDEO FILTERS AND
CROSSPOINT
AUDIO CROSSPOINT
WITH DIRECTDRIVE
OUTPUTS, VOLUME
CONTROL
SLOW SWITCHING
FAST SWITCHING
CHARGE PUMP
V12
VAUD
VVID
12V
3.3V
EP
GNDVID
C
VIDEO
ENCODER
STEREO
AUDIO
DAC
I2C
INTERRUPT
OUTPUT
RGB, Y/C, CVBS
SINGLE-ENDED R/L
STEREO AUDIO
RGB, Y/C, CVBS
CVBS
L/R AUDIO
(MAX9671 ONLY)
SLOW SWITCHING
Y/C, CVBS
RGB, Y/C, CVBS
L/R AUDIO
SLOW SWITCHING
STB CHIP
TV
SCART
VCR
SCART
FAST SWITCHING
L/R AUDIO
(MAX9670 ONLY)
MAX9670/MAX9671
System Block Diagram
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX9670CTL+ 功能描述:視頻開(kāi)關(guān) IC Low-Power A/V Switch w/Audio Volume Cntrl RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:4 開(kāi)啟電阻（最大值）:12 Ohms 傳播延遲時(shí)間: 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel
MAX9670CTL+T 功能描述:視頻開(kāi)關(guān) IC Low-Power A/V Switch w/Audio Volume Cntrl RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:4 開(kāi)啟電阻（最大值）:12 Ohms 傳播延遲時(shí)間: 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel
MAX9670EVKIT+ 功能描述:交換機(jī) IC 開(kāi)發(fā)工具 Low-Power A/V Switch w/Audio Volume Cntrl RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:USB Power Switches 工具用于評(píng)估:MAX4984E 工作電源電壓:2.8 V to 5.5 V
MAX9671CTH+ 功能描述:視頻開(kāi)關(guān) IC Low-Power A/V Switch w/Audio Volume Cntrl RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:4 開(kāi)啟電阻（最大值）:12 Ohms 傳播延遲時(shí)間: 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel
MAX9671CTH+T 功能描述:視頻開(kāi)關(guān) IC Low-Power A/V Switch w/Audio Volume Cntrl RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:4 開(kāi)啟電阻（最大值）:12 Ohms 傳播延遲時(shí)間: 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel
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