MAXIM MAX11503 Technical data

General Description

The MAX11503 is a low-power video amplifier with a
Y/C summer and chroma mute. The device accepts an
S-video or Y/C input and sums the luma (Y) and chroma
(C) signals into a composite CVBS signal which can be
connected directly to a TV monitor. The MAX11503 drives
two terminated 75Ω video coax cables.

The MAX11503 features include chroma mute, power
save, and SAG correction. Chroma mute disables the
chroma buffer. If the device is used to combine Y and
C signals in a camera application, the chroma mute
may be used in low-light situations. This removes all
chroma including burst which causes a downstream
composite video decoder to interpret the video signal
as luminance only, thus improving image quality. SAG
correction allows small output capacitors to be used in
AC-coupled output applications.

The MAX11503 operates from a single 2.7V to 5.25V
supply, is specified over the extended -40°C to +85°C
temperature range, and is available in a small 8-pin
µMAX

®

package.

Applications

Security Cameras

CCD Cameras

Digital Cameras

Portable Media Players

Features

♦ Low Operating Voltage

♦ Internal Y/C Summer with Chroma Mute Capability

♦ AC- or DC-Coupled Inputs

♦ AC- or DC-Coupled Outputs

♦ Output Buffer Drives Two Terminated 75Ω Video

Coax Cables

♦ SAG Correction Allows for Small Output

Capacitors

♦ Low-Power Standby, 0.5µA at 3.0V

MAX11503

Video Y/C Summer with

Driver and Chroma Mute

________________________________________________________________

Maxim Integrated Products

1

Functional Diagram

19-4031; Rev 0; 2/08

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

Pin Configuration appears at end of data sheet.

Ordering Information

+

Denotes lead-free package.

*

EP = Exposed pad.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

PART TEMP RANGE

MAX11503EUA+ -40°C to +85°C 8 µMAX-EP* U8E+2

PIN­PACKAGE

PKG

CODE

V

CC

0.1µF

0.1µF*

PSAVE

YIN

CIN

CMUTE

TRANSPARENT

CLAMP

AC-COUPLING

AND BIAS

*REMOVE AND SHORT FOR DC-COUPLED OPERATION

BUFFER

BUFFER

SYSTEM

ON A
CHIP

Y

(SOC)

C

GND

1µF

Σ

MAX11503

+6dB

OUT

SAG

68µF*

33µF*

75Ω

75Ω

MAX11503

Video Y/C Summer with
Driver and Chroma Mute

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= 3.0V, V

PSAVE

= VCC, V

CMUTE

= 0V, RL= 150Ω, AC-coupled, TA= +25°C, unless otherwise noted.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

Any Pin to GND .....................................................-0.3V to +5.5V

Maximum Current into Any Pin Except V

CC

and GND....±-50mA

Continuous Power Dissipation (T

A

= +70°C)
8-Pin µMAX-EP
Single-Layer Board (derate 10.3mW/°C

above +70°C)...........................................................824mW

Multilayer Board (derate 12.9 mW/°C

above +70°C).........................................................1030mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Lead temperature (soldering, 10s) ..................................+300°C

Junction Temperature......................................................+150°C

ESD Protection (Human Body Model)..................................±2kV

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Operating Current I

Supply Voltage Range V

Operating Temperature
Range

Operating Current
(Power-Save Mode)

Maximum Output
Voltage

Frequency
Characteristic

Differential Phase dφ

Input AC-coupled to ground, no output load,
V

= 2.7V

CC

CC

CC

T -40 +85

I

CCS

V

OM

∆A

Input AC-coupled to ground, no output load,
V

= 3.0V

CC

Input AC-coupled to ground, no output load,

= 5.25V

V

CC

PSAVE = 0, VCC = 2.7V 0.5
PSAVE = 0, VCC = 3.0V 0.5
PSAVE = 0, VCC = 5.25V 0.5

VCC = 2.7V 2.0

VCC = 3.0V 2.2

VCC = 5.25V 2.4

VCC = 2.7V 6

VCC = 3.0V 6Voltage Gain A

V

VCC = 5.25V 6

YIN = 100kHz to 5.5MHz, VCC = 2.7V 0

YIN = 100kHz to 5.5MHz, VCC = 3.0V -1 0 +1

V

YIN = 100kHz to 5.5MHz, VCC = 5.25V 0

VCC = 2.7V 0.5

VCC = 3.0V 0.1Differential Gain dG

= 5.25V 0.12

V

CC

VCC = 2.7V 0.3

VCC = 3.0V 0.3

= 5.25V 0.3

V

CC

8

8 14.0

8

2.70 5.25 V

mA

o

C

µA

V

P-P

dB

dB

%

Degrees

MAX11503

Video Y/C Summer with

Driver and Chroma Mute

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= 3.0V, V

PSAVE

= VCC, V

CMUTE

= 0V, RL= 150Ω, AC-coupled, TA= +25°C, unless otherwise noted.)

Typical Operating Characteristics

(VCC= 3.0V, V

PSAVE

= VCC, V

CMUTE

= 0V, RL= 150Ω, AC-coupled, TA= +25°C, unless otherwise noted.)

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX11503 toc01

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

5.04.54.03.53.0

7

8

9

10

6

2.5 5.5

VIDEO OUTPUT WAVEFORM

(CMUTE = 0)

MAX11503 toc02

4µs/div

YIN
500mV/div

CIN
500mV/div

OUT
500mV/div

VIDEO OUTPUT WAVEFORM

(CMUTE = 1)

MAX11503 toc03

4µs/div

YIN
500mV/div

CIN
500mV/div

OUT
500mV/div

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Signal-to-Noise Ratio SNR

Second Harmonic
Distortion

Chroma Input
Resistance

Logic-Input Voltage
Low

Logic-Input Voltage
High

Weighted, VCC = 2.7V -65

Weighted, VCC = 3.0V -62

Weighted, V

= 5.25V -65

CC

3.58MHz, VCC = 2.7V -48

2HD

R

CIN

V

V

3.58MHz, VCC = 3.0V -48

3.58MHz, V

IL

IH

= 5.25V -48

CC

0.7 x
V

CC

800 kΩ

dB

dB

0.6 V

V