ST STMAV340 User Manual

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 4Ω swit ch resistance betw een two ports

■ Excellent R

■ Minimal propagation delay through the switch

■ Low quiescent current consumption

■ V

■ Zero bounce in flow-through mode

■ Control inputs compatible with TTL level

■ All input/output pins are on the same side

Operating Range: 4.0V to 5.5V

CC

facilitates PCB routing

■ Data and control inputs provide the

undershoot clamp diode

■ Guaranteed break-before-make timing

■ High ESD rating: > 2kV HBM

■ –40°C to 85°C operating temperature range

■ Suitable for both RGB and Composite-Video

Switching

■ Available in a small TSSOP16 package

Applications

■ Advanced TVs

■ Front projectors

■ LCD Monitors

■ Notebook PCs

■ DVD Players

matching between channels

ON

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
switch 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 practi cally 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.

ON

) of the

Order Codes

Part Number Temperature Range Package Comments

STMAV340 –40°C to +85°C TSSOP16 STMAV340TTR

Rev . 1

September 2005 1/21

www.st.com

21

STMAV340

Contents

1 Summary Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Application Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.1 Power Supply Sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4 Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6 Test Circuit and Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

7 Package Mechanical D ata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

8 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2/21

STMAV340 1 Summary Description

1

2

3

4

N

1

2

3

4

N

1 Summary Description

1.1 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, th e 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. Functional Diagr am

1B

A

A

1B

1C

1C

2B

A

A

A

A

A

A

Flow Control

Flow Control

2B

2C

2C

3B

3B

3C

3C

4B

4B

4C

4C

OE_

OE_
S

S

3/21

2 Pin Configuration STMAV340

1
1

2
2
3
3
4
4

N

1
1

2
2
3
3
4
4

N

2 Pin Configuration

Figure 2. Pin Config uration (Top View )

1

B

B
C

C
B

B
C

C
B

B
C

C
B

B
C

C

1
2

2
3

3
4

4
5

5
6

6
7

7
8

8

16

16
15

15
14

14
13

13
12

12
11

11
10

10

9

9

Table 1. Pin Description

Symbol Type Name and Functions

OE_N IN Bus Switch Enable Note: 1

S IN Select Input
1A ,2A ,3A ,4A IN/OUT Port A; Analog Video I/Os
1B ,2B ,3B ,4B IN/OUT Bus B; Analog Video I/Os

1C, 2C, 3C, 4C IN/OUT Bus C; Analog Vide o I/Os

V

V

CC

CC

OE_

OE_
S

S
1A

1A
2A

2A
3A

3A
4A

4A
GND

GND

V

CC

GND Ground

Note: 1 Tie to V

through a pull-up resistor. The minimum value of the resistor is determined by the

CC

Power supply

current-sinking capability of the driver.

Table 2. Truth Table

OE_N S ON Switch

0 0 1B,2B,3B,4B
0 1 1C,2C,3C,4C
1 X Disabled

4/21

STMAV340 3 Application Diagrams

3 Application Diagrams

Figure 3. 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.

5/21

4 Maximum Ratings STMAV340

4 Maximum Ratings

Stressing the device above the rating listed in the “A bsolu te Max imum 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

T

= 25°C, GND= 0V

A

Symbol Parameter Value Unit

V

I

ICC/I

T

CC

V

S

V

IN

I

IK

OUT

STG

GND

Supply Voltage to Ground -0.5 to + 7.0 V
DC Switch Vo lt age -0.5 to + 7.0 V
DC Input Voltage -0.5 to + 7.0 V
DC Input Diode Current -50 mA
DC Output Sink Current 128 mA
DC VCC/GND Current
St orage Temper ature Range -65 to 150 °C

±100 mA

Note: 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.

6/21

STMAV340 5 Electrical Char acteristics

5 Electrical Characteristics

Table 4. Recommended Operating Conditions

= -20 to +70°C

T

A

Symbol Parameter (Note: 1) T est Conditions M in. T yp. Max. Unit

V

V

V

t

Power Supply Vol tage

CC

Input Voltage

IN

Output Voltage

OUT

Input Rise and Fall Ti m e Switch Control Inpu t 0 5 ns/V

r, tf

4.0 5.5 V

05.5V

05.5V

Switch I/O 0 DC ns/V

Free Air Operating Temperature

V

T

A

ESD-Human Body Model (HMB) Note: 1

ESD

-40 +85 °C

-2 +2 kV

Note: 1 Unused 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

= -40°C to +85°C

T

A

V

Symbol Parameter Test Conditions

Analog Signal Range 5 0 2.0 V

V
V

V

I

OFF

Clamp Diode Voltage IIN = -18mA 4.5 -1.2 V

IK

HIGH Level Input Voltage 4.0-5.5 2.0 V

IH

LOW Level Input Voltage 4.0-5.5 0.8 V

IL

Input Leakage Curr ent 0 ≤ V

I

I

OFF-STATE Leakage

≤ 5.5V 5.5 ±10 μA

IN

0 ≤ A, B ≤ VCC, C ≤ V

CC

Current

VIN = 1.0V, ION = 13mA 4.5 3 7 Ω

= 2.0V, ION = 26mA 4.5 7 10 Ω

V

IN
IN = VCC

Other inputs at V

or GND, I

CC

OUT

or GN D

ΔI

R

ON

Switch ON resist ance (1)

I

Quiescent Supply Current V

CC

CC

Increase in I

CC

per Input One input at 3.4V

= 0 5.5 3 μA

(V)

CC

Min. Typ. Max. Unit

5.5 ±10 μA

5.5 2.5 mA

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.

7/21

5 Electrical Characteristi cs STMAV340

Table 6. AC Electrical Characteristics

= -40°C to +85°C, CL = 20pF, RU = RD = 75Ω

T

A

V

= 4.5 - 5.5V VCC = 4.0V

Symbol Parameter T est conditions

, t

t

PZH

t

PHZ

B

X

Output Enable Time, Selec t to Bus B/C VI = 7V for t

PZL

B/C

, t

Output Disable Time, Select to Bus B/C VI = 7V for t

PLZ

time OE_N to Bus A, B/C

-3dB B andwidth RL = 150Ω

W

Crosstalk RIN = 10Ω

TALK

D

Differenti al Gai n RL = 150Ω

G

PZL

VI = OPEN for t

PLZ

VI = OPEN for t

= 25°C

T

A

= 150Ω, 10 MHz

R

L

PHZ

PHZ

f = 3.58 MHz

D

Differenti al Phase RL = 150Ω

P

f = 3.58 MHz

P

Off Isolation RL = 150Ω

IRR

10 MHz

CC

Unit

Min. Typ. Max. Min. M ax.

5.2 5.7 ns

5.1 5.6

nsOutput Enable Time, OE_N to Bus A,

5.2 5.5 ns

5.5 5.5

nsOutput Disable T ime, Output Enable

300 MHz

-58 dB

0.64 %

0.1 Deg.

-60 dB

Table 7. Capacitance

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

C

C

Control Pin Input Cap acitance

IN

Input/Output Capacitance A Port V

I/O

Input/Output Capacitance B/C Port 5 pF

C

Switch On Capacitance V

ON

= 5.0V

CC
CC

OE_N = 5.0V

= 5.0V,

CC

OE_N = 0.0V

3pF
7pF

12 pF

8/21

STMAV340 6 Test Circuit and Diagrams

Ω

F

Ω

F

6 Test Circuit and Diag rams

Note: C L includes probe and jig capacitance.

All input pulses are supplied by generators having the following characteristics: PRR = 10MHz,
ZO = 50

Figure 5. AC Test Circuit

Ω

, tr,tf = 2.5ns .

ROM OUTPUT

ROM OUTPUT

UNDE R TES T

UNDE R TES T

20 pF

20 pF

V

V

I

I

RU

RU

RD 75

RD 75

C

C

L

L

9/21

6 Test Circuit and Diagrams STMAV340

t

V

V

t

V

V

Figure 6. AC Waveforms

= 2. 5ns

= 2. 5ns

f

f

ENABLE

ENABLE
INPUT

INPUT

90%

90%

t

t

PZL

PZL

t

t

PZH

PZH

1.5V

1.5V

OUTPUT

OUTPUT

10%

10%

OUTPUT

OUTPUT

1.5 V

1.5 V

1. 5 V

1. 5 V

10%

10%

90%

90%

1.5V

1.5V

= 2. 5n s

= 2. 5n s

t

t

r

r

GND

GND

t

t

PLZ

PLZ

t

t

PHZ

PHZ

3.0V

3.0V

VOL+ 0.3

VOL+ 0.3
V

V

OL

OL

V

V

OH

OH

VOH–0.3

VOH–0.3

10/21

STMAV340 6 Test Circuit and Diagrams

Figure 7. ON Resistance Test Circuit

11/21

6 Test Circuit and Diagrams STMAV340

Table 8. Test Circuit

t

ON

t

OFF

Test

V

CC

4.75V ± 0.75V

4.75V ± 0.75V

4.75V ± 0.75V

4.75V ± 0.75V

R

75
75

75
75

L

C

L

20
20

20
20

Figure 8. Turn-on/Turn -off Test Circuit an d Timing Diagram

V

2B

GND

V

CC

GND

V

CC

V

2C

V

CC

GND

V

CC

GND

12/21

STMAV340 6 Test Circuit and Diagrams

Differential gain and phase are measured at the output of the ON channel. For example, when
V

= 0, V

SEL

Figure 9. Differential Gain/Phase Measurement Test Circuit

= 0 and 1A is the input, the output is measured at 1B.

OE_N

13/21

6 Test Circuit and Diagrams STMAV340

Frequency response is measured at the output of the ON channel. For example, when V
0, V

= 0 and 1A is the input, the output is measured at 1B. All unused analog I/O ports are

OE_N

left open.

Figure 10. Frequency Response (BW) Test Circuit

SEL

=

14/21

STMAV340 6 Test Circuit and Diagrams

A 50Ω termination resistor is needed for the network analyzer. Crosstalk is measured at the
output of the non-adjacent ON channel. For example, V
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 50Ω pull down resistors.

Figure 11. Crosstalk Test Circuit

SEL

= 0, V

= 0, and 1A is the input,

OE_N

15/21

6 Test Circuit and Diagrams STMAV340

A 50Ω termination resistor is needed for the network analyzer. Off-isolation is measured at the
output of the OFF channel. For example, when V

= VCC, V

SEL

= 0 and 1A is the input, the

OE_N

output is measured at 1B. All unsued analog input ports are left open, and the output ports are
connected to GND through the 50Ω pulldown resistors.

Figure 12. Off-Iso lation Test Circuit

16/21

STMAV340 6 Test Circuit and Diagrams

Figure 13. I/O Pin (Input Si de) E SD P rot ection Circ ui t

Figure 14. I/O Pin (Outp ut Side) ESD Pro tection Circuit

Figure 15. S and OE_N Input ESD Protection Circuit

17/21

7 Package Mechani cal Data STMAV340

7 Package M echanical Da ta

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.

18/21

STMAV340 7 Package Mechanical Data

Figure 16. TSSOP16 Me chan ic al Data

TSSOP16 MECHANICAL DATA

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

A1.10.433

A1 0.05 0.10 0.15 0.002 0.004 0.006

A2 0.85 0.9 0.95 0.335 0.354 0.374

b 0.19 0.30 0.0075 0.0118

c 0.09 0.20 0.0035 0.0079

D 4.9 5 5.1 0.193 0.197 0.201

E 6.25 6.4 6.5 0.246 0.252 0.256

E1 4.3 4.4 4.48 0.169 0.173 0.176

e 0.65 BSC 0.0256 BSC

K0

L 0.50 0.60 0.70 0.020 0.024 0.028

o

mm inch

o

4

o

8

o

0

o

4

o

8

A2

A

A1

PIN 1 IDENTIFICATION

b

e

c

K

L

E

D

E1

1

19/21

8 Revision Hist ory STMAV340

8 Revision History

Date Revision Description of Change

09-Sep-2005 1 Fi rst issue

20/21

STMAV340 8 Revision History

I

s

o

d

b

ct

t

ot

a

nformation furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequence

f 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 grante
y implic ation or otherwise under any patent or patent ri ghts of STM i croelectr onics. Specifications menti oned in thi s publicati on are subje

o change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are n

uthoriz ed for use as critical compo nents in life support devic es or systems without express writt en approval of STMicroel ectronics.

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