max9546esat Maxim Integrated Products, Inc., max9546esat Datasheet

max9546esat

Manufacturer Part Number

max9546esat

Description

Differential Video Interface Chipset

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.MAX9546ESAT.pdf (16 pages)

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The MAX9546/MAX9547 differential interface chipset

converts single-ended voltages to differential voltages for

transport and then converts back to single-ended volt-

ages. These devices eliminate costly, bulky, single-

ended coaxial cables with inexpensive, readily available,

differential shielded (ScTP) or unshielded (UTP) twisted

pairs. The fault detection of the MAX9546 and loss-of-sig-

nal detection of the MAX9547 allow proactive and

speedy diagnosis, such as identifying failures in the man-

ufacturing stage and troubleshooting equipment at repair

facilities. The MAX9546/MAX9547 are low-cost, conve-

nient solutions for transporting CVBS/FBAS analog video

signals (PAL or NTSC) through hostile environments.

The MAX9546 driver converts the single-ended input into

a differential output with a 6dB fixed gain to drive a back-

terminated, DC-coupled differential video output to unity

gain. This DC connection allows the detection of a short-

circuit condition at the differential outputs. The FAULT

output indicates a short-circuit condition including a short

to a high battery condition (V

The MAX9547 receiver converts the differential signal

from the MAX9546 into a single-ended signal. Like the

MAX9546 output, the MAX9547 input survives a short to

a high battery condition or ground. The MAX9547 receiv-

er loss-of-signal output (LOS) operates by detecting the

H-Sync and thus can support both monochrome and

color video signals. The MAX9547 gain is set with an

external impedance between ZT+ and ZT-.

The MAX9546/MAX9547 operate from a 7.5V to 10V

single supply. Both devices include ±15kV ESD Human

Body Model (HBM) protection. The MAX9546/MAX9547

are offered in a thermally enhanced 8-pin SO package

and specified over the -40°C to +85°C extended tem-

perature range.

19-3873; Rev 3; 10/07

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.

Automotive Video

Security/CCTV Video

Avionics/In-Flight Entertainment

Car Navigation

In-Car Entertainment

Collision Avoidance/Rearview Cameras

________________________________________________________________ Maxim Integrated Products

General Description

BAT

Differential Video Interface Chipset

= +16V) or ground.

Applications

♦ Fault Detection (MAX9546)

♦ Loss-of-Signal Detection (MAX9547)

♦ Tolerate ±2V Ground-Level Shift between Source

♦ ±15kV ESD Protection (Human Body Model)

♦ ±8kV—IEC 1000-4-2 Contact Discharge

♦ ±15kV—IEC 1000-4-2 Air-Gap Discharge

♦ Preset 6dB Gain (MAX9546)

♦ Variable Receiver Gain (MAX9547)

♦ 7.5V to 10V Single-Supply Operation

Note: These devices are specified for -40°C to +85°C temper-

ature range.

+Denotes a lead-free package.

*EP = Exposed paddle.

Pin Configuration appears at end of data sheet.

MAX9546ESA+

MAX9547ESA+

and Load

PART

CLAMP

MAX9546

FAULT

OUT+

OUT-

Typical Operating Circuit

PIN-

PACKAGE

8 SO-EP*

Ordering Information

PKG CODE DESCRIPTION

S8E-14

ZT+

ZT-

IN+

IN-

Features

Driver

Receiver

MAX9547

IOUT

LOS

OUT

Related parts for max9546esat

max9546esat Summary of contents

Page 1

Rev 3; 10/07 Differential Video Interface Chipset General Description The MAX9546/MAX9547 differential interface chipset converts single-ended voltages to differential voltages for transport and then converts back to single-ended volt- ages. These devices eliminate costly, bulky, single- ended coaxial cables ...

Page 2

Differential Video Interface Chipset ABSOLUTE MAXIMUM RATINGS (Voltages are referenced GND GND ............................................................-0.3V to +11V CC IN and FAULT (MAX9546)......................... -0. OUT+, OUT- (MAX9546) (Note 1) .............................-2V to +16V FAULT Short-Circuit Duration GND ...

Page 3

Differential Video Interface Chipset AC ELECTRICAL CHARACTERISTICS—MAX9546 (V = +8.5V 220Ω across OUT+ and OUT (Note 3) PARAMETER SYMBOL Large-Signal Bandwidth Large-Signal Flatness Slew Rate Settling Time (0.1%) t Power-Supply Rejection Ratio Common-Mode Balance (Note ...

Page 4

Differential Video Interface Chipset DC ELECTRICAL CHARACTERISTICS—MAX9547 (continued +8.5V, GND = 0V 75Ω PARAMETER SYMBOL LOS Logic Level LOS Leakage Current Input Fault Current AC ELECTRICAL CHARACTERISTICS—MAX9547 (V = +8.5V, GND = ...

Page 5

Differential Video Interface Chipset AC ELECTRICAL CHARACTERISTICS—MAX9546 Driving MAX9547 (V = +8.5V 220Ω across OUT+ and OUT +25°C, unless otherwise noted.) (Note 3) PARAMETER SYMBOL Differential Gain Differential Phase Signal-to-Noise Ratio 2T Pulse-to-Bar Rating 2T ...

Page 6

Differential Video Interface Chipset (V = +8.5V 220Ω between OUT+ and OUT GAIN vs. FREQUENCY 20 MAX9546 10 0 MAX9547 -10 -20 -30 0.001 0.01 0 FREQUENCY (MHz) MAX9547 COMMON-MODE REJECTION RATIO vs. ...

Page 7

Differential Video Interface Chipset (V = +8.5V 220Ω between OUT+ and OUT POWER-SUPPLY REJECTION RATIO vs. FREQUENCY 100mV RIPPLE P-P -10 -20 MAX9547 -30 -40 -50 MAX9546 -60 -70 -80 0.0001 0.001 ...

Page 8

Differential Video Interface Chipset PIN NAME Power Supply. Connect together and bypass with a 0.1µF in parallel with a 4.7µF capacitor GND Video Input Fault Indicator. Active-low, open-drain output. FAULT = low when ...

Page 9

Differential Video Interface Chipset Common-Mode Balance A driver is typically specified as having a property called common-mode balance (CMB), longitudinal balance, or simply line imbalance. Although balance is associated with the source, it assumes a perfectly balanced, cor- rectly terminated, ...

Page 10

Differential Video Interface Chipset Applications Information Differential Interface The impedances of the differential interface are made up of the two source resistors on the driver (MAX9546) shown as R and the load resistors on the receiver S (MAX9547) shown as ...

Page 11

Differential Video Interface Chipset 0V OFFSET TO A DEVICE OTHER THAN A MAX9546 USING CAT5, ETC. 0V OFFSET 3.2V LOW-NOISE REFERENCE Figure 3. Suggested MAX9547 Configuration When Using Other Devices ______________________________________________________________________________________ 75Ω OPTIONAL EQ NETWORK Z FOR LONG CABLE RUNS ...

Page 12

Differential Video Interface Chipset 0V OFFSET TO A DEVICE OTHER THAN A MAX9546 USING CAT5, ETC. 0V OFFSET 3.2V LOW-NOISE REFERENCE Figure 4. Alternate MAX9547 Configuration for Use with Other Devices 12 ______________________________________________________________________________________ 75Ω OPTIONAL EQ NETWORK Z FOR LONG ...

Page 13

Differential Video Interface Chipset ±15kV ESD Protection As with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against electro- static discharges encountered during handling and assembly. The driver outputs and receiver inputs have extra protection against ...

Page 14

Differential Video Interface Chipset The IEC 1000-4-2 standard covers ESD testing and performance of finished equipment; it does not specifi- cally refer to integrated circuits (Figure 7). The major difference between tests done using the Human Body Model and IEC ...

Page 15

Differential Video Interface Chipset 7.5V TO 10V 0.1µF 4.7µF GND1 V CC MAX9546 C IN 0.33µF 75Ω IN 75Ω AC GND GND1 GND1 GND1 NOTE: TYPICAL APPLICATION CIRCUIT FOR 110Ω UNSHIELDED (UTP) CABLE WITH AN OVERALL UNITY GAIN IN A ...

Page 16

... Maxim reserves the right to change the circuitry and specifications without notice at any time. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products Package Information PACKAGE OUTLINE 8L SOIC, .150" EXPOSED PAD 21-0111 is a registered trademark of Maxim Integrated Products, Inc ...

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