MAX4397 MAXIM [Maxim Integrated Products], MAX4397 Datasheet
MAX4397
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MAX4397 Summary of contents
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... The I C interface programs the gain and volume control, and selects the input source for routing. The MAX4397 is available in a compact 48-pin thin QFN package and is specified over the 0°C to +70°C commercial temperature range. Satellite Set-Top Boxes Cable Set-Top Boxes ...
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Audio/Video Switch for Dual SCART Connectors ABSOLUTE MAXIMUM RATINGS V to GNDVID........................................................-0.3V to +6V VID V to GNDAUD .....................................................-0.3V to +14V GNDAUD ....................................................-0.3V to +6V AUD GNDAUD to GNDVID ............................................-0.1V to +0.1V All Video Inputs, ENCIN_FS, VCRIN_FS, ...
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... Gain = 0dB P 20Hz to 20kHz, 0.5V input, RMS ∆A gain = 0dB 0.5V input, frequency where output is RMS BW -3dB referenced to 1kHz V Gain = 0dB IN MAX4397D only input differential signal = 0V AUD = 0°C to +70°C, unless otherwise noted. Typical A MIN TYP MAX 14 1.21 1 > ...
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... T LOAD A CONDITIONS MAX4397D only, over V range CM Single-ended inputs 1kHz, THD < 1% ENC inputs differential level, MAX4397D 1kHz, THD < 1% ENC inputs single-ended, MAX4397S 1kHz, THD < 1% Single ended: VCR_INR, VCR_INL, TV_INR, TV_INL Encoder, MAX4397D: ENC_INL+, ENC_INL-, IN ENC_INR+, ENC_INR- ...
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Audio/Video Switch for Dual SCART Connectors ELECTRICAL CHARACTERISTICS (continued 12V 5V, 0.1µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V 12 VID AUD V to GNDAUD, and V to GNDVID ...
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Audio/Video Switch for Dual SCART Connectors ELECTRICAL CHARACTERISTICS (continued 12V 5V, 0.1µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V 12 VID AUD V to GNDAUD, and V to GNDVID ...
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Audio/Video Switch for Dual SCART Connectors (V = 12V 5V, 0.1µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V 12 VID AUD V to GNDAUD GNDVID no load ...
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Audio/Video Switch for Dual SCART Connectors (V = 12V 5V, 0.1µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V 12 VID AUD V to GNDAUD GNDVID no load ...
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... Audio/Video Switch for Dual SCART Connectors PIN NAME MAX4397D MAX4397S 1 1 SDA 2 2 SCL 3 3 DEV_ADDR 4 — ENC_INL+ — 4 ENC_INL 5 — ENC_INL- — N.C. 6 — ENC_INR+ — 6 ENC_INR 7 — ENC_INR VCR_INR 9 9 VCR_INL 10 10 TV_INR 11 11 TV_INL 12 12 GNDAUD 13 13 ...
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... Only the audio encoder inputs of the MAX4397D are different from the MAX4397S. The MAX4397S has a single-ended audio encoder input while the audio encoder input for the MAX4397D is dif- ferential. The TV output audio path has volume control from -56dB to +6dB in 2dB steps, while the VCR output audio path has volume control from -6dB to +6dB in 6dB steps ...
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... The MAX4397 can be configured through an I DEV_ADDR sets the I The MAX4397 switches video signals between an MPEG decoder, TV SCART, and VCR SCART. The video switch includes reconstruction filters, multiplexed video ampli- fiers, and a Y-C mixer driver for an RF modulator. See Figure 1 for the functional diagram of the video section ...
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... The MPEG decoder and VCR uses the RGB format and fast switching to insert an on-screen display (OSD), usu- ally text, onto the TV. The MAX4397 supports RGB as an input from either the VCR or the MPEG decoder and as an output only to the TV. The Red video signal of the RGB format and the Chroma video signal of the S-VHS format share the same SCART connector pin ...
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... The audio block has three stereo audio inputs from the TV, the VCR, and the MPEG decoder SCART. Each input has a 100kΩ resistor connected to an internally generated voltage equal to 0. encoder input of the MAX4397D, where the DC bias is fixed externally. Fast Switching Y/C Mixer ...
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... ENC_INR- TV_INR VCR_INR MUTE MUTE MUTE MUTE IS AN INTERNAL SIGNAL Figure 3. MAX4397D Audio Section Functional Diagram 14 ______________________________________________________________________________________ Audio Outputs were completely uncorrelated, then a 9.54dB gain block is used. See Figures 3 and 4 for the functional diagram of the audio section. The TV channel incorporates a zero-crossing detect ...
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... TV_INR VCR_INR MUTE MUTE MUTE MUTE IS AN INTERNAL SIGNAL Figure 4. MAX4397S Audio Section Features Singled-Ended Encoder Input To implement the zero-crossing function when switch- ing audio signals, set the ZCD bit by loading register 2 00h through the I C-compatible interface (if the ZCD bit is not already set). Then set the mute bit low by loading register 00h ...
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... Volume Control The two bus lines (SDA and SCL) must be at logic-high when the bus is not in use. The MAX4397 is a slave device and must be controlled by a master device. Pullup resistors from the bus lines to the supply are required when push-pull circuitry is not driving the lines. ...
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... VID can discharge through a signal pin. The equivalent cir- cuit is a 2200pF capacitor charged to 311V connected through less than 0.1Ω signal pin. The MAX4397 is soldered on the PC board when it experiences such a discharge. Therefore, the current spike flows through the ESD protection diodes and is absorbed by the sup- ...
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... For best perfor- AUD mance, use separate ground planes for each of the ground returns and connect all three ground planes together at a single point. Refer to the MAX4397 evalu- ation kit for a proven circuit board layout example. BIT 5 BIT 4 ...
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Audio/Video Switch for Dual SCART Connectors Table 4. Data Format for Read Mode REGISTER ADDRESS BIT 7 (HEXADECIMAL) 0Eh Thermal SHDN Table 5. Register 00h: TV Audio control DESCRIPTION TV Audio Mute TV Volume Control TV Zero-Crossing Detector TV Volume ...
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Audio/Video Switch for Dual SCART Connectors Table 7. Register 06h: TV Video Input Control DESCRIPTION 7 Input Sources for TV Video Input Sources for TV_G_OUT and TV_B_OUT RGB Gain 0 TV_R/C_IN Clamp/Bias 1 20 ______________________________________________________________________________________ BIT ...
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Audio/Video Switch for Dual SCART Connectors Table 8. Register 07h: TV Video Output Control DESCRIPTION 7 Set TV Function Switching TV_R/C_OUT Ground Fast Blank (Fast Switching) TV_Y/CVBS_OUT Switch RF_CVBS_OUT Switch Table 9. Register 08h: VCR Video Input Control DESCRIPTION 7 ...
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Audio/Video Switch for Dual SCART Connectors Table 10. Register 09h: VCR Video Output Control DESCRIPTION 7 6 Set VCR Function Switching VCR_R/C_OUT ground Table 11. Register 0DH: Output Enable DESCRIPTION 7 RF_CVBS_OUT TVOUT_FS TV_Y/CVBS_OUT TV_B_OUT TV_G_OUT TV_R/C_OUT VCR_R/C_OUT 0 VCR_Y/CVBS_OUT ...
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Audio/Video Switch for Dual SCART Connectors Table 12. Register 0Eh Status DESCRIPTION Slow Switch Input VCR Slow Switch Input 0 Power-On Reset 1 0 Thermal Shutdown 1 ______________________________________________________________________________________ BIT ...
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... TV_INL 3.3kΩ 3.3kΩ TV_INL_SC 12 GNDAUD 10µF ALL CAPACITORS ARE 0.1µF AND ALL RESISTORS ARE 75Ω, UNLESS OTHERWISE NOTED. 24 ______________________________________________________________________________________ Typical Application Circuits MAX4397D 10µF 10µF 10µF 10µF 10µF 10µF 10µ 10µF ...
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... TV_INL_SC GNDAUD 12 47µF ALL CAPACITORS ARE 0.1µF AND ALL RESISTORS ARE 75Ω, UNLESS OTHERWISE NOTED. ______________________________________________________________________________________ Typical Application Circuits (continued MAX4397S TV_INL 10µF 10µF 10µF 10µF 10µF 10µF 10µ ...
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... RGB, Y-C, CVBS (DIFFERENTIAL OR SE) ENCODER FAST SWITCHING VCR RGB, Y-C, CVBS SCART CONNECTOR FAST SWITCHING SLOW SWITCHING 26 ______________________________________________________________________________________ VID 12 AUD L/R AUDIO MAX4397 ADDRESS SDA SCL Y-C, CVBS L/R AUDIO EP GNDAUD GNDVID System Block Diagram CVBS RF MODULATOR MONO AUDIO RGB, Y-C, CVBS R/L AUDIO TV SCART Y-C, CVBS ...
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... DEV_ADDR ENC_INL+ ENC_INL- ENC_INR+ ENC_INR- VCR_INR VCR_INL TV_INR TV_INL GNDAUD ______________________________________________________________________________________ SDA 1 SCL MAX4397D THIN QFN Pin Configurations 36 V VID 35 VCR_R/C_OUT 34 VCR_Y/CVBS_OUT 33 TV_B_OUT 32 TV_G_OUT ...
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... ENC_INL N.C. ENC_INR N.C. VCR_INR VCR_INL TV_INR TV_INL GNDAUD 28 ______________________________________________________________________________________ Pin Configurations (continued MAX4397S THIN QFN TRANSISTOR COUNT: 13,265 PROCESS: BiCMOS 36 V VID 35 VCR_R/C_OUT 34 VCR_Y/CVBS_OUT 33 ...
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Audio/Video Switch for Dual SCART Connectors (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) D D/2 ______________________________________________________________________________________ k E/2 (NE- DETAIL A ...
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Audio/Video Switch for Dual SCART Connectors (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than ...