MAXIM MAX4028 MAX4029 Triple Quad, 2 1 Video Multiplexer-Amplifiers with Input Clamps

19-3240; Rev 0; 3/04

EVALUATION KIT AVAILABLE

Triple/Quad, 2:1 Video

Multiplexer-Amplifiers with Input Clamps General Description Features

The MAX4028/MAX4029 are 5V, triple/quad, 2:1 voltage- Single +5V Operation

feedback multiplexer-amplifiers with input clamps and a Independently Selectable Sync-Tip or fixed gain of +2V/V (6d B). Channel 1 (IN1A and IN1B) Key-Clamp Inputs inputs are clamped to the video sync tip of the input sig-

Adjustable Key-Clamp Voltage

nal, while the remaining inputs can be clamped to either

130MHz Large-Signal -3d B Bandwidth

the video sync tip or the video sync of channel 1 (IN1_).

The latter is referred to as a key clamp and is pin selec- 210MHz Small-Signal -3d B Bandwidth

table. Selectable clamp/key-clamp inputs and fixed-gain 300V/µs Slew Rate video output buffers make the MAX4028/MAX4029 ideal

20ns Switching Time

for video-source switching applications such as automo-

Ultra-Low ±10m VP-P Switching Transient

tive entertainment systems, video projectors, and dis-

plays/TVs. Both devices have 20ns channel switching 0.2% Differential Gain/0.4° Phase Error

times and low ±10m VP-P switching transients, making Low-Power, High-Impedance Disable Mode them ideal for high-speed video switching applications such as on-screen display (OSD) insertion.

Ordering Information

The MAX4028/MAX4029 have a -3d B large-signal (2VP-P) bandwidth of 130MHz, a -3d B small-signal bandwidth of

PART TEMP RANGE PIN-PACKAGE

210MHz, and a 300V/µs slew rate. Low differential gain

and phase errors of 0.2% and 0.4°, respectively, make MAX4028EUE -40°C to +85°C 16 TSSOP

these devices ideal for broadcast video applications. MAX4028EWE -40°C to +85°C 16 Wide SO

The MAX4028/MAX4029 are specified over the -40°C to MAX4029EUP -40°C to +85°C 20 TSSOP

+85°C extended temperature range and are offered in

MAX4029EWP -40°C to +85°C 20 Wide SO

16-pin and 20-pin TSSOP/SO packages.

Typical Operating Circuit

Applications

In-Car Navigation/Entertainment

Blade Servers

75Ω CABLE 0.1µF VCC

Security Systems IN1A

MAX4028 0.01µF0.1µF MAX4029

Video Projectors CLAMP

Displays and Digital Televisions 75Ω CABLE

CIN 75Ω

75Ω CABLE 0.1µF Broadcast and Graphics Video IN1B

Set-Top Boxes CLAMP

Notebook Computers CIN

75Ω CABLE 0.1µF Video Crosspoint Switching IN2A

CLAMP

75Ω CABLE

75Ω OUT2

CIN 75Ω CABLE 0.1µF

Selector Guide IN2B

CLAMP

NO. OF 2:1 75Ω

PART GAIN 1kΩ

MUX-AMPS DISABLE

KEYREF

MAX4028 2V/V

MAX4029 2V/V RKEYREF KEY/CLAMP

6kΩ CLAMP/KEY_2

CONTROL

Pin Configurations appear at end of data sheet.

Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.