STMAV340
Low ON Resistance Quad, SPDT, Wide-Bandwidth Video Switch
Features
Bi-directional operation 4 input/output channels analog video switch Wide bandwidth 300MHz Low 4 switch resistance between two ports Excellent RON matching between channels Minimal propagation delay through the switch Low quiescent current consumption V CC Operating Range: 4.0V to 5.5V Zero bounce in flow-through mode Control inputs compatible with TTL level All input/output pins are on the same side facilitates PCB routing Data and control inputs provide the undershoot clamp diode Guaranteed break-before-make timing High ESD rating: > 2kV HBM 40C to 85C operating temperature range Suitable for both RGB and Composite-Video Switching Available in a small TSSOP16 package
TSSOP16
Description
The STMAV340 is a bidirectional quad (4 channel), high speed single pole/double throw (SPDT), low power CMOS TTL-compatible analog video switch designed for advanced video applications which demand superior image quality. The low ON Resistance (R ON) of the sw itch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. STMAV340 is designed for very low cross-talk, low bit-to-bit skew, high channel-to-channel noise isolation, and low I/O capacitance. The switch offers very little or practically no attenuation of the high speed signals at the outputs, thus preserving the signal integrity enough to pass stringent requirements. The STMAV340 is able to simplify the PCB routing on inputs and outputs as well as reduce the overall BOM costs by eliminating the need for more costly input-output controllers.
Applications
Advanced TVs Front projectors LCD Monitors Notebook PCs DVD Players
Order Codes
Part Number STMAV340 Temperature Range 40C to +85C Package TSSO P16 Comments STMAV340TTR
September 2005
Rev. 1 1/21
www.st .com 21
STMAV340
Contents
1 Summary Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1 .1 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 3
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Application Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 .1 Power Supply Sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 5 6 7 8
Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Test Circuit and Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Package Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
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STMAV340
1 Summary Description
1
1.1
Summary Description
Functional Description
The STMAV340 is a high bandwidth, analog video switch. It is low ON-resistance and low I/O capacitance result in a very small propagation delay. When OE_N is set to LOW, the select (S) pin connects port A to the selected port B or port C output. When OE_N is set to HIGH, the switch is OPEN and a high-impedance state exists between the A port and B/C ports. Low differential gain and phase make this switch ideal for component and RGB video applications. This device has high bandwith and low crosstalk, making it ideal for high frequency applications as well.
Figure 1.
1A
Functional Diagram
1B 1C 2B 2C 3B 3C 4B 4C
2A
3A
4A
Fl ow Cont r ol OE_N S
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2 Pin Configuration
STMAV340
2
Figure 2.
Pin Configuration
Pin Configuration (Top View )
1B 1C 2B 2C 3B 3C 4B 4C
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
VCC OE_N S 1A 2A 3A 4A GND
Table 1.
Pin Description
Type IN IN IN/OUT IN/OUT IN/OUT Name and Functions Bus Switch Enable Note: 1 Select Input Port A; Analog Video I/Os Bus B; Analog Video I/Os Bus C; Analog Video I/Os Power supply G round
S y mb o l OE_N S 1A ,2A ,3A ,4A 1B ,2B ,3B ,4B 1C, 2C, 3C, 4C VCC GN D
Note: 1 Tie to VCC through a pull-up resistor. The minimum value of the resistor is determined by the current-sinking capability of the driver. Table 2. Truth Table
S 0 1 X 1B,2B,3B,4B 1C,2C,3C,4C Disabled ON Switch
OE _ N 0 0 1
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STMAV340
3 Application Diagrams
3
Figure 3.
Application Diagrams
STMAV340 2-to-1 Analog Video Switch Used in an LCD TV
Figure 4.
STMAV340 1-to-2 Analog Video Switch Used in a PC
3.1
Power Supply Sequencing
Proper power-supply sequencing is advised for all CMOS devices. Applying VCC before sending any signals to the input/output or control pins is recommended.
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4 Maximum Ratings
STMAV340
4
Maximum Ratings
Stressing the device above the rating listed in the "Absolute Maximum Ratings" table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents.
Table 3.
Absolute Maximum Ratings TA = 25C, GND= 0V
S y mb o l VCC VS VIN IIK IOUT ICC/IGND TSTG
Parameter Supply Voltage to Ground DC Switch Voltage DC Input Voltage DC Input Diode Current DC Output Sink Current DC V CC/GND Current Storage Temperature Range
Value -0.5 to + 7.0 -0.5 to + 7.0 -0.5 to + 7.0 -50 128 100 -65 to 150
Unit V V V mA mA mA C
Not e:
Absolute maximum ratings are those values above which damage to the device may occur. Functional operation under these conditions is not implied. All voltages are referenced to GND.
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STMAV340
5 Electrical Characteristics
5
Table 4.
Electrical Characteristics
Recommended Operating Conditions TA = -20 to +70C
S y mb o l VCC VI N VOUT tr, tf TA VESD
Parameter (Note: 1) Power Supply Voltage Input Voltage O utput Voltage Input Rise and Fall Time Free Air Operating Temperature ESD-Human Body Model (HMB) Note: 1
Test Conditions
Min. 4.0 0 0
Typ.
M ax. 5.5 5.5 5.5 5 DC +85 +2
Unit V V V ns/V ns/V C kV
Switch Control Input Switch I/O
0 0 -40 -2
Note: 1 U nused control inputs must be held HIGH or LOW. They should not float. 2 In accordance with IEC61000-4-2, level 4 Table 5. DC Electrical Characteristics TA = -40C to +85C
S y mb o l Parameter Analog Signal Range VIK VIH VI L II IOFF RON Clamp Diode Voltage HIGH Level Input Voltage LOW Level Input Voltage Input Leakage Current OFF-STATE Leakage Current Switch ON resistance (1) 0 VIN 5.5V 0 A, B VCC , C V CC VIN = 1.0V, ION = 13mA VIN = 2.0V, ION = 26mA I CC Quiescent Supply Current VIN = VCC or GND, IOUT = 0 Increase in ICC per Input O ne input at 3.4V O ther inputs at VCC or GND IIN = -18mA Test Conditions VCC(V) 5 4.5 4.0-5.5 4.0-5.5 5.5 5.5 4.5 4.5 5.5 5.5 3 7 2.0 0.8 10 10 7 10 3 2.5 M in. 0 Typ. Ma x . 2.0 -1.2 Unit V V V V A A A mA
ICC
Note: 1 Measured by the voltage drop between pin A and B/C pins at the indicated current through the switch. ON Resistance is determined by the lower of the voltages on the two (A or B/C) pins.
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5 Electrical Characteristics
STMAV340
Table 6.
AC Electrical Characteristics TA = -40C to +85C, CL = 20pF, RU = RD = 75
S y mb o l
Parameter
Test conditions VI = 7V for tPZL VI = OPEN for tPHZ VI = 7V for tPLZ VI = OPEN for tPHZ RL = 150 TA = 25C RIN = 10 RL = 150, 10 MHz RL = 150 f = 3.58 MHz RL = 150 f = 3.58 MHz RL = 150 10 MHz
VCC = 4.5 - 5.5V M in. Typ. Ma x . 5. 2 5. 1 5. 2 5. 5 300 -58 0.64 0.1 -60
VCC = 4.0V Min. M ax. 5.7 5.6 5.5 5.5
Unit ns ns ns ns MH z dB % Deg. dB
tPZH, tPZL Output Enable Time, Select to Bus B/C Output Enable Time, OE_N to Bus A, B/C tPHZ, tPLZ Output Disable Time, Select to Bus B/C Output Disable Time, Output Enable time OE_N to Bus A, B/C -3dB Bandwidth BW XTALK DG DP PIRR Crosstalk Differential Gain Differential Phase Off Isolation
Table 7.
S y mb o l CIN CI/O CO N
Capacitance
Parameter Control Pin Input Capacitance Input/Output Capacitance A Port Input/Output Capacitance B/C Port Switch On Capacitance Test Conditions VCC = 5.0V VCC OE_N = 5.0V VCC = 5.0V, OE_N = 0.0V Min. Typ. 3 7 5 12 Ma x . Unit pF pF pF pF
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STMAV340
6 Test Circuit and Diagrams
6
Not e:
Test Circuit and Diagrams
C L includes probe and jig capacitance. All input pulses are supplied by generators having the following characteristics: PRR = 10MHz, ZO = 50, tr,tf = 2.5ns.
Figure 5.
AC Test Circuit
V I
R U F O O TP T RM U U U D RTE T NE S 20 pF C L R 75 D
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6 Test Circuit and Diagrams
STMAV340
Figure 6.
AC Waveforms
t f = 2. 5n s 90% ENABLE INPUT 1. 5V 10% 10% 90% 1. 5V GND t r = 2. 5n s 3. 0V
t PZL
t PLZ
OUTPUT
1. 5 V VOL + 0. 3V VOL
t PZH
t PHZ
VOH OUT PUT 1. 5 V VOH 0. 3 V
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STMAV340
Figure 7. ON Resistance Test Circuit
6 Test Circuit and Diagrams
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6 Test Circuit and Diagrams
STMAV340
Table 8.
Test tON tOFF
Test Circuit
VCC 4.75V 0.75V 4.75V 0.75V 4.75V 0.75V 4.75V 0.75V RL 75 75 75 75 CL 20 20 20 20 V2B GND VCC GND VCC V2C VCC GND VCC GND
Figure 8.
Turn-on/Turn-off Test Circuit and Timing Diagram
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STMAV340
6 Test Circuit and Diagrams
D ifferential gain and phase are measured at the output of the ON channel. For example, when VSEL = 0, VOE_N = 0 and 1A is the input, the output is measured at 1B. Figure 9. Differential Gain/Phase Measurement Test Circuit
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6 Test Circuit and Diagrams
STMAV340
Frequency response is measured at the output of the ON channel. For example, when VSEL = 0, VOE_N = 0 and 1A is the input, the output is measured at 1B. All unused analog I/O ports are left open. Figure 10. Frequency Response (BW) Test Circuit
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STMAV340
6 Test Circuit and Diagrams
A 50 termination resistor is needed for the network analyzer. Crosstalk is measured at the output of the non-adjacent ON channel. For example, VSEL = 0, VOE_N = 0, and 1A is the input, the output is measured at 1C. All unused analog input ports are connected to GND through IOports and the output ports are connected to GND through the 50 pull down resistors. Figure 11. Crosstalk Test Circuit
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6 Test Circuit and Diagrams
STMAV340
A 50 termination resistor is needed for the network analyzer. Off-isolation is measured at the output of the OFF channel. For example, when VSEL = VCC, VOE_N = 0 and 1A is the input, the output is measured at 1B. All unsued analog input ports are left open, and the output ports are connected to GND through the 50 pulldown resistors. Figure 12. Off-Isolation Test Circuit
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STMAV340
Figure 13. I/O Pin (Input Side) ESD Protection Circuit
6 Test Circuit and Diagrams
Figure 14. I/O Pin (Output Side) ESD Protection Circuit
Figure 15. S and OE_N Input ESD Protection Circuit
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7 Package Mechanical Data
STMAV340
7
Package Mechanical Data
In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a Lead-free second level interconnect . The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
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STMAV340
Figure 16. TSSOP16 Mechanical Data
7 Package Mechanical Data
TSSOP16 MECHANICAL DATA
mm MIN. A A1 A2 b c D E E1 e K L 0o 0.50 0.05 0.85 0.19 0.09 4.9 6.25 4.3 5 6.4 4.4 0.65 BSC 4o 0.60 8o 0.70 0o 0.020 0.10 0.9 TYP. MAX. 1.1 0.15 0.95 0.30 0.20 5.1 6.5 4.48 0.002 0.335 0.0075 0.0035 0.193 0.246 0.169 0.197 0.252 0.173 0.0256 BSC 4o 0.024 8o 0.028 0.004 0.354 MIN. inch TYP. MAX. 0.433 0.006 0.374 0.0118 0.0079 0.201 0.256 0.176
DIM.
A
A2 A1 b e K c L E
D
E1
PIN 1 IDENTIFICATION
1
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8 Revision History
STMAV340
8
Revision History
Date 09-Sep-2005 Revision 1 First issue Description of Change
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STMAV340
8 Revision History
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners 2005 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com
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