MAX9598CTL+ Maxim Integrated Products, MAX9598CTL+ Datasheet
MAX9598CTL+
Specifications of MAX9598CTL+
Related parts for MAX9598CTL+
MAX9598CTL+ Summary of contents
Page 1
... Video Load Detection ♦ Video Reconstruction Filter with 10MHz Passband and 52dB Attenuation at 27MHz full-scale RMS ♦ 3.3V and 12V Supply Voltages Set-Top Boxes TVs DVD Players PART MAX9598CTL+ + Denotes a lead(Pb)-free/RoHS-compliant package Exposed pad. V12 VVID VAUD 12V 3.3V 3.3V MAX9598 ...
Page 2
Low-Power Audio/Video Switch for Dual SCART Connectors ABSOLUTE MAXIMUM RATINGS VVID to GNDVID .......................................…………-0.3V to +4V V12 to EP .................................................…………-0.3V to +14V VAUD to EP ................................................…………-0. GNDVID .........................................…………-0.1V to +0.1V All Video Inputs, VCRIN_FS to GNDVID ...
Page 3
Low-Power Audio/Video Switch for ELECTRICAL CHARACTERISTICS (continued) (V12 = 12V, VVID = VAUD = 3.3V, V GNDVID = +25°C.) (Note 1) PARAMETER SYMBOL Input Clamping Current Maximum Input Source Resistance Bias Voltage V BIAS Input Resistance DC CHARACTERISTICS DC Voltage ...
Page 4
Low-Power Audio/Video Switch for Dual SCART Connectors ELECTRICAL CHARACTERISTICS (continued) (V12 = 12V, VVID = VAUD = 3.3V, V GNDVID = +25°C.) (Note 1) PARAMETER SYMBOL 2T Pulse Response 2T Bar Response Nonlinearity Group Delay Distortion Glitch Impulse Caused by ...
Page 5
Low-Power Audio/Video Switch for ELECTRICAL CHARACTERISTICS (continued) (V12 = 12V, VVID = VAUD = 3.3V, V GNDVID = +25°C.) (Note 1) PARAMETER SYMBOL VIDEO-TO-AUDIO INTERACTION Crosstalk CHARGE PUMP Switching Frequency FAST SWITCHING Input Low Input High Level Input Current Output ...
Page 6
Low-Power Audio/Video Switch for Dual SCART Connectors ELECTRICAL CHARACTERISTICS (continued) (V12 = 12V, VVID = VAUD = 3.3V, V GNDVID = +25°C.) (Note 1) PARAMETER SYMBOL Low Period of the SCL Clock High Period of the SCL Clock Setup Time ...
Page 7
Low-Power Audio/Video Switch for (VVID = VAUD = 3.3V, V12 = 12V, V GNDVID otherwise noted.) VIDEO SMALL-SIGNAL GAIN vs. FREQUENCY 10 NO FILTER 0 -10 -20 FILTER -30 -40 -50 - 100mV OUT P-P -70 100k 1M ...
Page 8
Low-Power Audio/Video Switch for Dual SCART Connectors (VVID = VAUD = 3.3V, V12 = 12V, V GNDVID otherwise noted.) DIFFERENTIAL GAIN AND PHASE 0.2 0 4.43MHz, NO FILTER -0 0.8 ...
Page 9
Low-Power Audio/Video Switch for (VVID = VAUD = 3.3V, V12 = 12V, V GNDVID otherwise noted.) INPUT CLAMP CURRENT vs. INPUT VOLTAGE 0.5 1.0 1.5 2.0 2.5 3.0 3.5 INPUT ...
Page 10
Low-Power Audio/Video Switch for Dual SCART Connectors PIN NAME 1 SDA Bidirectional SCL I C Clock Input 3 DEV_ADDR Device Address Set Input. Connect DEV_ADDR to GNDVID, VVID, SDA or SCL. See Table 3. Interrupt Output. This ...
Page 11
Low-Power Audio/Video Switch for PIN NAME 31 ENC_C_IN Encoder Chroma Video Input 32 ENC_R/C_IN Encoder Red/Chroma Video Input 33 TV_R/C_OUT TV SCART Red/Chroma Video Output 34 VCR_R/C_OUT VCR SCART Red/Chroma Video Output 35 VCR_Y/CVBS_OUT VCR SCART Luma/Composite Video Output 36 ...
Page 12
Low-Power Audio/Video Switch for Dual SCART Connectors The audio circuit is essentially a stereo, 2x2, nonblock- ing, audio crosspoint with output drivers. The encoder (stereo audio DAC) and the VCR are the two input sources, and the two outputs go ...
Page 13
Low-Power Audio/Video Switch for The TV audio channel incorporates a zero-crossing detect (ZCD) circuit that minimizes click noise due to abrupt signal level changes that occur when switching between audio signals at an arbitrary moment. To implement the zero-crossing function ...
Page 14
Low-Power Audio/Video Switch for Dual SCART Connectors TV_Y/CVBS_IN VCR_Y/CVBS_IN ENC_Y/CVBS_IN ENC_Y_IN VCR_R/C_IN ENC_R/C_IN ENC_C_IN VCR_G_IN ENC_G_IN VCR_B_IN ENC_B_IN VCRIN_FS Figure 3. MAX9598 Video Section Functional Diagram 14 ______________________________________________________________________________________ ACTIVITY DETECT ACTIVITY DETECT ACTIVITY DETECT ACTIVITY DETECT ...
Page 15
Low-Power Audio/Video Switch for Whether the incoming video signal is AC-coupled or DC-coupled into the MAX9598 depends upon the ori- gin, format, and voltage range of the video signal. Table 1 below shows the recommended connections. Always AC-couple an external ...
Page 16
Low-Power Audio/Video Switch for Dual SCART Connectors MAX9598 fig04 10μs/div Figure 4. MAX9598 Video Output with CVBS Signal (Multiburst Video Test Signal Shown) If the supply voltage is greater than 3.135V (5% below a 3.3V supply), each amplifier can drive ...
Page 17
Low-Power Audio/Video Switch for The fast-switching signal was originally used to switch between CVBS and RGB signals on a pixel-by-pixel basis so that on-screen display (OSD) information could be inserted. Since modern set-top box decoder chips have integrated OSD circuitry, ...
Page 18
Low-Power Audio/Video Switch for Dual SCART Connectors START and STOP Conditions SDA and SCL idle high when the bus is not in use. A master initiates communication by issuing a START con- dition. A START condition is a high-to-low transition ...
Page 19
Low-Power Audio/Video Switch for A write to the MAX9598 consists of transmitting a START condition, the slave address with the R/W bit set to 0, one data byte to configure the internal register address pointer more data bytes, ...
Page 20
Low-Power Audio/Video Switch for Dual SCART Connectors ACKNOWLEDGE FROM MAX9598 ACKNOWLEDGE FROM MAX9598 S SLAVE ADDRESS 0 A R/W Figure 11. Reading 1 Indexed Byte of Data from the MAX9598 ACKNOWLEDGE FROM MAX9598 ACKNOWLEDGE FROM MAX9598 S SLAVE ADDRESS 0 ...
Page 21
Low-Power Audio/Video Switch for Table 4. Register Settings for Looping VCR Signals to the TV DESCRIPTION REGISTER 00h 01h 06h 07h Loop VCR signals to the TV 08h 09h 0Dh 10h Note 5: TV slow-switch output (bits 1 and 0) ...
Page 22
Low-Power Audio/Video Switch for Dual SCART Connectors Table 6. Average Power Consumption OPERATING MODE Full-power mode WITH input video detection and video load detection active. Full-power mode WITHOUT input video detection and video load detection active (power-on default). Table 7. ...
Page 23
Low-Power Audio/Video Switch for Power Consumption The quiescent power consumption and average power consumption of the MAX9598 are very low because of 3.3V operation and low-power circuit design. Quiescent power consumption is defined when the MAX9598 is operating without loads ...
Page 24
Low-Power Audio/Video Switch for Dual SCART Connectors 0.1μF VCR_R/C_IN BIAS ENC_R/C_IN BIAS ENC_C_IN BIAS MAX9598 Figure 15. VCR_R/C_IN Receives a Chroma Signal from the VCR SCART Connector. Notice that the Pulldown Switch on VCR_R/C_OUT Is Closed and that the Gain-of-2 ...
Page 25
Low-Power Audio/Video Switch for STB CHIP μC VIDEO ENCODER STEREO AUDIO DAC *R1 VALUES DAC = CS4334/5/8/ 4.53kΩ ±1% DAC = PCM1742 5.57kΩ ±1% Figure 17. Application Circuit to Connect Series Resistors and External ESD Protection ...
Page 26
Low-Power Audio/Video Switch for Dual SCART Connectors 311V connected through less than 0.1Ω signal pin. The MAX9598 is soldered on the PCB when it experi- ences such a discharge. Therefore, the current spike flows through both external and ...
Page 27
Low-Power Audio/Video Switch for Table 9. Data Format for Read Mode REGISTER ADDRESS BIT 7 BIT 6 (HEXADECIMAL) Power-on 0Eh Not used reset 0Fh Not used Table 10. Register 00h: Audio Control DESCRIPTION TV Audio Mute Zero-Crossing Detector Table 11. ...
Page 28
Low-Power Audio/Video Switch for Dual SCART Connectors Table 12. Register 06h: TV Video Input Control DESCRIPTION 7 Input Sources for TV Video Input Sources for TV_G_OUT and TV_B_OUT Table 13. Register 07h: TV Video Output Control DESCRIPTION ...
Page 29
Low-Power Audio/Video Switch for Table 14. Register 08h: VCR Video Input Control DESCRIPTION 7 Input Sources for VCR Video ENC_R/C_IN Clamp/Bias 0 VCR_R/C_IN Clamp/Bias 1 Table 15. 09h: VCR Video Output Control DESCRIPTION 7 6 Set VCR Function Switching VCR_R/C_OUT ...
Page 30
Low-Power Audio/Video Switch for Dual SCART Connectors Table 16. Register 0Dh: Output Enable DESCRIPTION TVOUT_FS Enable TV_Y/CVBS_OUT Enable TV_B_OUT Enable TV_G_OUT Enable TV_R/C_OUT Enable VCR_R/C_OUT Enable VCR_Y/CVBS_OUT Enable Table 17. Register 10h: Operating Modes DESCRIPTION ...
Page 31
Low-Power Audio/Video Switch for Table 18. Register 0Eh: Status DESCRIPTION 7 TV Slow-Switching Input Status VCR Slow-Switching Input Status Power-On Reset Table 19. Register 0Fh: Video Activity Status DESCRIPTION TV CVBS Input Video Detection TV CVBS Output Load VCR CVBS ...
Page 32
Low-Power Audio/Video Switch for Dual SCART Connectors STB CHIP μC VIDEO ENCODER 75Ω 75Ω 75Ω 75Ω 75Ω 75Ω STEREO AUDIO DAC 1μF 1μF *R1 VALUES DAC = CS4334/5/8/ 4.53kΩ ±1% DAC = PCM1742 5.57kΩ ±1% 32 ...
Page 33
Low-Power Audio/Video Switch for TOP VIEW ENC_C_IN 31 ENC_R/C_IN 32 33 TV_R/C_OUT VCR_R/C_OUT 34 35 VCR_Y/CVBS_OUT 36 TV_Y/CVBS_OUT 37 VCR_Y/CVBS_IN 38 TV_Y/CVBS_IN + 39 ENC_Y_IN 40 ENC_Y/CVBS_IN (6mm x 6mm) *EP = EXPOSED PAD ...
Page 34
Low-Power Audio/Video Switch for Dual SCART Connectors For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE 40 TQFN-EP 34 ______________________________________________________________________________________ Package Information PACKAGE CODE T4066+3 DOCUMENT NO. 21-0141 ...
Page 35
Low-Power Audio/Video Switch for For the latest package outline information and land patterns www.maxim-ic.com/packages. ______________________________________________________________________________________ Dual SCART Connectors Package Information (continued) 35 ...
Page 36
... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 36 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products ...