300 MHz, 32 × 16 Buffered

Analog Crosspoint Switch

ADV3202/ADV3203

Rev. 0

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FEATURES

Large, 32 × 16, nonblocking switch array

G = +1 (ADV3202) or G = +2 (ADV3203) operation

32 × 32 pin-compatible version available (ADV3200/ADV3201)

Single +5 V, dual ±2.5 V, or dual ±3.3 V supply (G = +2)

Serial programming of switch array

2:1 OSD insertion mux per output

Input sync-tip clamp

High impedance output disable allows connection of

multiple devices with minimal output bus load

Excellent video performance

60 MHz 0.1 dB gain flatness

Excellent ac performance

Bandwidth: >300 MHz

Slew rate: >400 V/μs

Low power: 1 W

Low all hostile crosstalk: −48 dB @ 5 MHz

Reset pin allows disabling of all outputs

Connected through a capacitor to ground, provides

power-on reset capability

176-lead exposed pad LQFP package (24 mm × 24 mm)

APPLICATIONS

CCTV surveillance

Routing of high speed signals, including

Composite video (NTSC, PAL, S, SECAM)

RGB and component video routing

Compressed video (MPEG, wavelet)

Video conferencing

FUNCTIONAL BLOCK DIAGRAM

V

VNEG

DGND

DVCC

POS

DATA

OUT

ENABLE/

DISABLE

193-BIT SHIFT REGISTER

PARALLEL LATCH

16 × 5:32

DECODERS

ADV3202

(ADV3203)

OUTPUT

BUFFER

G = +1

(G = +2)

ENABLE/

BYPASS

16

97

96

512

SYNC-TIP

CLAMP

SWITCH

MATRIX

OSD

MUX

16

OUTPUTS

32

INPUTS

..

.

..

.

..

.

..

.

16

16

REFERENCE

CLK

DATA IN

VCLAMP

VREF

OSD

INPUTS

OSD

SWITCHES

UPDATE

CS

RESET

96

Figure 1.

GENERAL DESCRIPTION

The ADV3202/ADV3203 are 32 × 16 analog crosspoint switch

matrices. They feature a selectable sync-tip clamp input for

ac-coupled applications and a 2:1 on-screen display (OSD)

insertion mux. With −48 dB of crosstalk and −80 dB isolation

at 5 MHz, the ADV3202/ADV3203 are useful in many high

density routing applications. The 0.1 dB flatness out to 60 MHz

makes the ADV3202/ADV3203 ideal for both composite and

component video switching.

The 16 independent output buffers of the ADV3202/ADV3203

can be placed into a high impedance state for paralleling cross-

point outputs so that off-channels present minimal loading to

an output bus if building a larger array. The ADV3202 has a

gain of +1 while the ADV3203 has a gain of +2 for ease of use in

back-terminated load applications. A single +5 V supply, dual

±2.5 V supplies, or dual ±3.3 V supplies (G = +2) can be used

while consuming only 195 mA of idle current with all outputs

enabled. The channel switching is performed via a double

buffered, serial digital control that can accommodate daisy

chaining of several devices.

The ADV3202/ADV3203 are packaged in a 176-lead exposed

pad LQFP package (24 mm× 24 mm) and are available over the

extended industrial temperature range of −40°C to +85°C.