MAXIM MAX9652, MAX9653, MAX9654 Technical data

General Description

The MAX9652/MAX9653/MAX9654 are 3.3V, triple­channel, high-definition (HD) video-filter amplifiers.
Specially designed for YPbPr component video signals,
these devices are ideal for a wide range of set-top box
and portable applications. The inputs to the MAX9652/
MAX9653/MAX9654 are AC-coupled. YIN has a sync­tip clamp while PBIN and PRIN have keyed clamps.
The output buffer has gain of 2V/V and drives a stan­dard back-terminated 75Ω video load.

The passband of the MAX9654 is logic selectable
between standard definition (SD) and high definition. The
MAX9652/MAX9653 have a fixed passband for HD video.
The MAX9654 SD lowpass filter has ±1dB passband out
to 8.5MHz and 57dB attenuation at 27MHz. The
MAX9652/MAX9653/MAX9654 HD lowpass filter have
±1dB passband out to 42MHz and 50dB attenuation at
109MHz.

The devices consume only 9.5mA per channel and
operate from a 3.3V supply. The MAX9653/MAX9654
feature a low-power, 12µA shutdown mode. The
MAX9652/MAX9653/MAX9654 are specified over the

-40°C to +125°C automotive temperature range.

Applications

Features

♦ 9.5mA/Channel Supply Current

♦ Selectable Lowpass Filter for High-Definition or

Standard-Definition Video Signals (MAX9654)

♦ 8.5MHz Standard-Definition Passband with 57dB

Attenuation at 27MHz

♦ 42MHz High-Definition Passband with 50dB

Attenuation at 109MHz

♦ 2V/V Gain

♦ 3.135V to 3.465V Single-Supply Operation

♦ 12µA Shutdown Mode (MAX9653/MAX9654)

MAX9652/MAX9653/MAX9654

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

________________________________________________________________

Maxim Integrated Products

1

19-4236; Rev 0; 8/08

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.

EVALUATION KIT

AVAILABLE

Typical Application Circuit

Ordering Information

Note: All devices are specified over the -40°C to +125°C oper­ating temperature range.

+

Denotes a lead-free/RoHS-compliant package.

T = Tape and reel.

Set-Top Boxes

DVD Players

HDTV

PVR

DVC

PART PIN-PACKAGE FILTER SHUTDOWN

MAX9652ASA+T 8 SO HD No

MAX9653AUB+T 10 µMAX HD Yes

MAX9654AUB+T 10 µMAX SD/HD Yes

+3.3V

0.1μF

V

SD/HD

SD/HD

SD/HD

DD

MAX9652
MAX9653
MAX9654

75Ω

3

3

3

2V/V

2V/V

2V/V

GND

YOUT

PBOUT

PROUT

75Ω

75Ω

2

SHDN

1

SD/HD

MPEG DECODER

0.1μF

0.1μF

0.1μF

PBIN

PRIN

YIN

CLAMP

KEYED
CLAMP

KEYED

CLAMP

CURRENT

DAC

CURRENT

DAC

CURRENT

DAC

1 MAX9654 ONLY.
2 MAX9653 AND MAX9654 ONLY.
3 FOR THE MAX9654, THE PASSBAND IS SELECTABLE BETWEEN SD AND HD. FOR THE MAX9652/MAX9653, THE PASSBAND IS HD.

MAX9652/MAX9653/MAX9654

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDD= 3.3V, V

SHDN

= VDD, V

GND

= 0, no load, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

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.

VDDto GND..............................................................-0.3V to +4V

YIN, PRIN, PBIN to GND ............................-0.3V to (V

DD

+ 0.3V)

SHDN, SD/HD to GND..............................................-0.3V to +4V

Maximum Current into Any Input Pin ................................±20mA

Output Short-Circuit Current Duration

to V

DD

or GND .......................................................Continuous

Continuous Power Dissipation (T

A

= +70°C)

8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW

10-Pin µMAX (derate 5.6mW/°C above +70°C) .............444mW

Operating Temperature Range .........................-40°C to +125°C

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

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

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DC CHARACTERISTICS

Supply Voltage Range V

Quiescent Supply Current I
Shutdown Supply Current SHDN = GND for MAX9653/MAX9654 12 20 µA

Input Voltage SHDN = GND for MAX9653/MAX9654

Input Resistance (YIN, PBIN,
PRIN)

INPUT

Input Voltage Swing V

YIN Sync Tip Clamp Level V

YIN Input Clamping Current I

YIN Sync Crush

PBIN, PRIN Input Bias Level V

PBIN, PRIN Input Resistance Normal operation, V

OUTPUT

Voltage Gain (Note 2) A

Gain Matching Guaranteed by output voltage swing -2 0 +2 %

Output Level

SWING

DD

DD

CLP

CLP

BIAS

V

Guaranteed by PSRR 3.135 3.3 3.465 V

No load 28.9 45 mA

SHDN = GND for MAX9653/MAX9654 105 210 310 kΩ

Guaranteed by
output voltage swing

V

= V

YIN

CLP

YIN sync-tip clamp
% reduction in sync
pulse from 0.3V;
R

SOURCE

Guaranteed by output voltage swing 1.95 2 2.04 V/V

Sync-tip clamp, YIN = unconnected,
measured at YOUT

PBIN = PRIN = unconnected, measured at
PBOUT, PROUT

= 75Ω

0.3 x
V

Y input 1.3

PB input, PR input 1

0.28 0.34 0.4 V

+ 0.5V 0.62 2.2 µA

Standard definition 0.3

High definition 0.7

0.84 0.915 1 V

= V

SHDN

DD

0.21 0.31 0.41 V

VDD/3

DD

1.1 1.32 1.5 V

0.36 x
V

DD

20 kΩ

V

V

P-P

%

MAX9652/MAX9653/MAX9654

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VDD= 3.3V, V

SHDN

= VDD, V

GND

= 0, no load, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Voltage Swing (Note 2)

Output Resistance

Output Leakage

Power-Supply Rejection Ratio 3.135V ≤ VDD ≤ 3.465V 40 57 dB

LOGIC INPUTS

Logic-Low Threshold V

Logic-High Threshold V

Logic-Input Current IIL/I

HIGH DEFINITION

High-Definition Reconstruction
Filter

K2T

Nonlinearity 5-step staircase 0.71 %

Interchannel Time Error

Group Delay Distortion 100kHz ≤ f ≤ 30MHz, VIN = 1V

3.135V ≤ V

3.465V, measured at
output:

= V

V

YIN

+1.3V),
V

PBIN

(V

BIAS

(V

BIAS

V

= 1.3V

YIN

V

PRIN

1.0V

P-P

Normal operation; V
MAX9653/MAX9654

Shutdown; V
MAX9654; T

TA = +25°C

IL

TA = +25°C

IH

VIN = GND to VDD; TA = +25°C 0.01 10 µA

IH

≤

DD

YOUT, RL = 150Ω to

/2

V

VDD

2.535 2.6 2.652

to (V

CLP

CLP

YOUT, RL = 150Ω to
GND

= V

= V

PRIN

- 0.35V) to

+ 0.65V),

P-P

PRIN

SHDN

= +25°C

A

=

PBOUT, PROUT, R
= 150Ω to V

,

=

PBOUT, PROUT, R
= 150Ω to GND

= V

SHDN

DD

= GND for MAX9653/

for

VDD

L

/2

1.95 2.0 2.04

L

0.5 Ω

0.1 10 µA

0.3 x
V

DD

±1dB passband flatness 42 MHz

= 1V

V

IN

P-P

,
reference frequency
is 1MHz

Taken with Tektronix VM5000HD using a
standard matrix signal

f = 30MHz 0.4

f = 50MHz -3

f = 109MHz -50

0.62 %

Difference in time between the 50% point of
the output signals; V

= 0.5V

IN

, Y to Pb

P-P

1ns

and Y to Pr

P-P

7ns

0.7 x
V

DD

V

P-P

V

V

dB

MAX9652/MAX9653/MAX9654

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VDD= 3.3V, V

SHDN

= VDD, V

GND

= 0, no load, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

Note 1: All devices are 100% production tested at TA= +25°C. Specifications over temperature limits are guaranteed by design.
Note 2: Voltage gain (A

V

) is a two-point measurement in which the output voltage swing is divided by the input voltage swing.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Interchannel Group Delay
Distortion Error

Peak Signal to RMS Noise 100kHz ≤ f ≤ 30MHz 62 dB

Power-Supply Rejection Ratio f = 1MHz, 200mV

Output Impedance f = 30MHz 16 Ω

Crosstalk from Any Active Video
Output to Any Quiet Video Output

STANDARD DEFINITION (MAX9654 Only)

Standard-Definition
Reconstruction Filter

2T Pulse-to-Bar K Rating

2T Pulse Response 2T = 200ns 0.2 K%

2T Bar Response

Nonlinearity 5-step staircase 0.36 %

Interchannel Time Error

Group Delay Distortion 100kHz ≤ f ≤ 5.5MHz +8.7 ns

Interchannel Group Delay
Distortion Error

Peak Signal to RMS Noise 100kHz ≤ f ≤ 5MHz 72 dB

Power-Supply Rejection Ratio f = 1MHz, 200mV

Output Impedance f = 5MHz 3 Ω

Crosstalk from Any Active Video
Output to Any Quiet Video Output

V

= 1V

IN

PBOUT and YOUT to
PROUT

f = 30MHz, video input = 1V

±1dB passband flatness 8.5 MHz

V

= 1V

IN

reference frequency
is 100kHz

2T = 200ns, bar time is 18µs; the beginning

2.5% and the ending 2.5% of the bar time is
ignored

2T = 200ns, bar time is 18µs; the beginning

2.5% and the ending 2.5% of the bar time is
ignored

Difference in time between the 50% point of
the output signals; VIN = 0.5V
and Y to Pr

V

= 1V

IN

PBOUT and YOUT to
PROUT

f = 4.43MHz, video input = 1V

P-P;

P-P

P-P;

,

YOUT to

YOUT to

f = 1MHz 1

f = 10MHz 1

f = 30MHz 1

Y channel 40

P-P

Pb, Pr channels 30

P-P

f = 5.5MHz -0.15

f = 9.6MHz -3

f = 27MHz -57

Y to Pb

P-P;

f = 1MHz 1

f = 3.58MHz 1

f = 4.43MHz 1

Y channel 30

P-P

Pb, Pr channels 25

P-P

-65 dB

0.15 K%

0.15 K%

1ns

-75 dB

ns

dB

dB

ns

dB

MAX9652/MAX9653/MAX9654

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

_______________________________________________________________________________________ 5

Typical Operating Characteristics

(VDD= +3.3V, video outputs have RL= 150Ω connected to GND unless otherwise stated, V

SHDN

= VDDfor MAX9653/MAX9654.)

SMALL-SIGNAL GAIN

vs. FREQUENCY

20

NORMALIZED TO 0dB

0

-20

-40

GAIN (dB)

-60

-80

-100

SD
(MAX9654)

VIN = 0.1V

P-P

0.1 1000
FREQUENCY (MHz)

LARGE-SIGNAL GAIN FLATNESS

vs. FREQUENCY

3

NORMALIZED TO 0dB

2

1

0

-1

GAIN (dB)

-2

-3

-4

-5

0.1 1000

VIN = 1V
RL = 150Ω

SD
(MAX9654)

P-P

FREQUENCY (MHz)

HD

MAX9652 toc01

GAIN (dB)

100101

HD

100101

MAX9652 toc04

DELAY (ns)

SMALL-SIGNAL GAIN FLATNESS

vs. FREQUENCY

3

NORMALIZED TO 0dB

2

1

0

-1

-2

-3

-4

-5

SD
(MAX9654)

VIN = 0.1V

P-P

0.1 1000
FREQUENCY (MHz)

HD

100101

GROUP DELAY

vs. FREQUENCY

110

100

90

SD

80

(MAX9654)

70

60

50

40

30

20

10

0

0.1 1000

HD

FREQUENCY (MHz)

VIN = 0.1V

100101

MAX9652 toc02

P-P

MAX9652 toc05

LARGE-SIGNAL GAIN

vs. FREQUENCY

20

NORMALIZED TO 0dB

0

-20

-40

GAIN (dB)

-60

-80

VIN = 1V

-100

0.1 1000

SD
(MAX9654)

P-P

FREQUENCY (MHz)

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

20

0

-20

-40

GAIN (dB)

-60

STANDARD DEFINITION

-80

-100

= 3.3V + 200mV

V

DD

MAX9654

0.1 1000

P-P

FREQUENCY (MHz)

HD

MAX9652 toc03

100101

MAX9652 toc06

100101

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

20

0

-20

-40

GAIN (dB)

-60

-80
HIGH DEFINITION

= 3.3V + 200mV

V

DD

-100

0.1 1000

P-P

FREQUENCY (MHz)

SUPPLY CURRENT

30.5

vs. TEMPERATURE

30.0

MAX9652 toc07

29.5

29.0

28.5

28.0

27.5

27.0

SUPPLY CURRENT (mA)

26.5

26.0

100101

25.5

-40 125
TEMPERATURE (°C)

925926-7

MAX9652 toc08

VOLTAGE GAIN vs. TEMPERATURE

2.5

2.3

2.1

GAIN (V/V)

1.9

1.7

1.5

-40 125
TEMPERATURE (°C)

MAX9652 toc09

925926-7

MAX9652/MAX9653/MAX9654

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VDD= +3.3V, video outputs have RL= 150Ω connected to GND unless otherwise stated, V

SHDN

= VDDfor MAX9653/MAX9654.)

100ns/div

2T PULSE RESPONSE (SD)

Y INPUT
200mV/div

Y OUTPUT
400mV/div

MAX9652 toc10

O

O

20ns/div

2T PULSE RESPONSE (HD)

Y INPUT
200mV/div

Y INPUT
400mV/div

MAX9652 toc11

O

O

4

μs/div

2T BAR RESPONSE (SD)

Y INPUT
200mV/div

Y OUTPUT
400mV/div

MAX9652 toc12

O

O

OUTPUT IMPEDANCE

2T BAR RESPONSE (HD)

μs/div

2

MAX9652 toc13

Y INPUT
200mV/div

O

Y INPUT
400mV/div

O

80

72

64

56

48

40

32

24

OUTPUT IMPEDANCE (Ω)

16

8

0

0 100

vs. FREQUENCY

FREQUENCY (MHz)

CROSSTALK

20

vs. FREQUENCY

STANDARD DEFINITION NONHOSTILE

= 1V + 1V

V

IN-ACTIVE

0

V

= 0.9V

IN-INACTIVE

-20

-40

GAIN (dB)

-60

-80

-100

-120

0.1 1000

P-P

FREQUENCY (MHz)

MAX9652 toc16

100101

ENABLE TIME Y CHANNEL

40ms/div

80604020

MAX9652 toc17

MAX9652 toc14

SHDN
2V/div

O

Y INPUT
500mV/div

O

CROSSTALK

vs. FREQUENCY

20

HIGH DEFINITION NONHOSTILE

= 1V + 1V

V

0

IN-ACTIVE

V

IN-INACTIVE

-20

-40

GAIN (dB)

-60

-80

-100

-120

0.1 1000

P-P

= 0.9V

FREQUENCY (MHz)

ENABLE TIME Pb CHANNEL

40ms/div

100101

MAX9652 toc18

MAX9652 toc15

SHDN
2V/div

O

PB OUTPUT
500mV/div

O

MAX9652/MAX9653/MAX9654

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

_______________________________________________________________________________________ 7

Typical Operating Characteristics (continued)

(VDD= +3.3V, video outputs have RL= 150Ω connected to GND unless otherwise stated, V

SHDN

= VDDfor MAX9653/MAX9654.)

ENABLE TIME Pr CHANNEL

40ms/div

DISABLE TIME Pb CHANNEL

MAX9652 toc19

MAX9652 toc21

SHDN
2V/div

O

PR OUTPUT
500mV/div

O

SHDN
2V/div

O

DISABLE TIME Y CHANNEL

20ns/div

DISABLE TIME Pr CHANNEL

MAX9652 toc20

SHDN
2V/div

O

Y OUTPUT
200mV/div

O

MAX9652 toc22

SHDN
2V/div

O

PR OUTPUT
1V/div

O

20ns/div

PB OUTPUT
1V/div

O

20ns/div

MAX9652/MAX9653/MAX9654

Detailed Description

The MAX9652/MAX9653/MAX9654 are HD video-filter
amplifiers that operate from a 3.3V supply. They can be
used to lowpass filter the signal after a video digital-to­analog converter (DAC) or before a video analog-to­digital converter (ADC). The inputs to the parts must be
AC-coupled; the outputs can be AC- or DC-coupled.
The average power consumption of the parts is signifi­cantly less than the average power consumption of the
5V generation of HD video filter amplifiers. The quies­cent power consumption of the MAX9654 is 95mW, and
the average power consumption, which is defined when
the parts drive a 150Ω load to ground with color bars, is
200mW.

The MAX9652 is the simplest member of the family, with
neither selectable SD/HD filters nor shutdown capabili­ty. This device is best suited for line-powered equip­ment such as set-top boxes, DVD players, and A/V
receivers.

The MAX9653 has shutdown capability and is a natural
fit in portable equipment and line-powered equipment
in which standby power consumption is a concern. The
MAX9653 is also an option in SCART set-top boxes with
analog high-definition video outputs. In those designs,
the same triple DAC typically generates both the stan­dard-definition RGB signals that are routed through the
SCART device (refer to the MAX9598 data sheet) and
the high-definition YPbPr signals that are routed
through the MAX9653. Only one signal set is output at
any given time, and so the device connected to the
unused outputs must be shut down.

The MAX9654 has both selectable SD/HD filters and
shutdown capability. The applications of the MAX9654
are similar to those of the MAX9653, but the MAX9654
provides the additional capability to switch between
standard-definition and high-definition formats. The
MAX9654 has a passband (±1dB) of 42MHz for high­definition signals and a passband of 8.5MHz for stan­dard-definition signals.

Inputs

Video signals must be AC-coupled into the MAX9652/
MAX9653/MAX9654 using 0.1µF capacitors. An input
sync tip clamp sets the DC level for the luma signal at
YIN. Keyed clamps on PBIN and PRIN set the DC bias
of the color difference signals at PBIN and PRIN. When
the input sync tip clamp detects a sync pulse on the
luma signal, it generates a signal that activates the
keyed clamps on PBIN and PRIN.

In shutdown mode, the inputs to the MAX9653 and the
MAX9654 do not distort the video signal in case the
outputs of the video DAC are also connected to another
video circuit such as a dual SCART device. See the

SCART Set-Top Box with Analog HD Outputs

section.

The inputs in shutdown mode are biased at V

DD

/3,
which is sufficiently above ground so that the ESD
diodes never forward bias as the video signal changes.
The input resistance in shutdown is 220kΩ which pre­sents negligible loading on the video current DAC.

HD Video Filter

The MAX9652/MAX9653/MAX9654 have a six-pole,
Butterworth filter with a typical passband (±1dB) of

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

8 _______________________________________________________________________________________

Pin Description

PIN

MAX9652 MAX9653 MAX9654

1 1 1 YIN Y Input

23 3V

3 4 4 PBIN Pb Input

4 5 5 PRIN Pr Input

5 6 6 PROUT Pr Output

6 7 7 PBOUT Pb Output

7 8, 9 8 GND Ground

8 10 10 YOUT Y Output

—2 2SHDN

— — 9 SD/HD

NAME FUNCTION

DD

Power Supply. Bypass VDD to GND with a 0.1µF capacitor.

Active-Low Shutdown. Connect SHDN to V
operation and to GND for low power consumption.

Standard-Definition/Active-Low High-Definition Passband
Select (MAX9654)

for normal

DD

42MHz, which is well beyond the 30MHz specification
for high-definition video signals. The typical attenuation
is 30dB at 74.25MHz, which is the sample clock rate for
the first generation of high-definition video DACs. The
typical attenuation is 50dB at 109MHz, which is also a
popular sample clock rate.

SD Video Filter

The MAX9654 has a six-pole Butterworth filter with a
typical passband (±1dB) of 8.5MHz, which makes the
device suitable for standard-definition video signals
from all sources (e.g., broadcast and DVD). Broadcast
video signals are channel limited: NTSC signals have

4.2MHz bandwidth and PAL signals have 5MHz band­width. Video signals from a DVD player, however, are
not channel limited, so the bandwidth of DVD video sig­nals can approach the Nyquist limit of 6.75MHz.
Recommendation ITU-R BT.601-5 specifies 13.5MHz as
the sampling rate for standard-definition video.
Therefore, the maximum bandwidth of the signal is

6.75MHz. To ease the filtering requirements, most mod­ern video systems oversample by two times, clocking
the video current DAC at 27MHz. The typical attenua­tion is 57dB at 27MHz.

Video Amplifier

The output amplifiers have a fixed gain of 2V/V, and
their rail-to-rail output stages are capable of driving

back-terminated 75Ω loads. The output load can be
either DC-coupled or AC-coupled, in which case, use
an AC-coupling capacitor of at least 220µF.

The luma signal at YOUT swings between 0.3V and

2.3V approximately. The color difference signals are
centered around 1.32V.

Short-Circuit Protection

The back-termination resistor in a typical application
limits the short-circuit current if an external short is
applied to the system. Additionally, the output ampli­fiers have built-in short-circuit protection to prevent
accidental damage when the outputs are directly short­ed to either supply or ground for short times.

Digital Control

The MAX9654 passband is selectable between SD and
HD. Pulling SD/HD low results in an HD passband, and
pulling SD/HD high results in a SD passband. The
MAX9652/MAX9653 have a fixed HD passband.

The MAX9653/MAX9654 feature a shutdown mode. Pull
SHDN high for normal operation. Pull SHDN low to put the
devices in shutdown, reducing quiescent current to 12µA
typically and placing the outputs in high impedance.

Applications Information

Power Consumption

The quiescent power consumption and average power
consumption of the MAX9652/MAX9653/MAX9654 are
low because of the 3.3V operation. Quiescent power
consumption is defined when the parts operate without a
load. In this case, the MAX9652/MAX9653/MAX9654
consume approximately 95mW. Average power con­sumption, which is defined when the MAX9652/
MAX9653/MAX9654 drive a 150Ω load to ground with
color bars, is about 200mW. Table 1 shows the power
consumption with different HD video signals. The supply
voltage is 3.3V. The outputs drive 150Ω loads to ground.

MAX9652/MAX9653/MAX9654

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

_______________________________________________________________________________________ 9

Figure 1. (A) MAX9653/MAX9654 Input Circuit in Shutdown
Mode; (B) MAX9653/MAX9654 Equivalent Input Circuit in
Shutdown Mode

Table 1. Power Consumption of the
MAX9652/MAX9653/MAX9654 with
Different HD Video Signals

V

DD

667kΩ

IN_

333kΩ

222kΩ

IN_

V

DD

MAX9653
MAX9654

MAX9653
MAX9654

/3

VIDEO SIGNAL POWER CONSUMPTION (mW)

All black screen 181

All white screen 209

Color bars 200

MAX9652/MAX9653/MAX9654

SCART Set-Top Box

with Analog HD Outputs

In set-top boxes with SCART connectors and cinch
connectors for high-definition YPbPr outputs, a triple
video DAC usually outputs either standard-definition
RGB signals that are routed to the SCART device or
high-definition YPbPr signals that are routed through a
high-definition filter amplifier like the MAX9653 (Figure

2). The set-top box devices have a limited number of
video DACs, and hence, one bank of triple video DACs
switches video format depending upon whether stan­dard-definition RGB or high-definition YPbPr signals are
required.

When RGB signals are desired, the high-definition filter
amplifier should be turned off so that the RGB signals
do not appear on the YPbPr connectors. Similarly, when
YPbPr signals are desired, the RGB outputs of the
SCART device should be muted or shut down. In either
case, the inactive device cannot distort the video sig­nals generated by the DACs.

Power-Supply Bypassing and Ground

The MAX9652/MAX9653/MAX9654 operate from a sin­gle-supply voltage of 3.3V, allowing for low-power oper­ation. Bypass VDDto GND with a 0.1µF capacitor.
Place all external components as close as possible to
the device.

Using a Digital Supply

The MAX9652/MAX9653/MAX9654 are designed to
operate from noisy digital supplies. The high PSRR
(50dB at 100kHz) allows the devices to reject the noise
from digital power supplies. If the digital power supply
is very noisy and stripes appear on the television
screen, increase the supply bypass capacitance. An
additional, smaller capacitor in parallel with the main
bypass capacitor can reduce digital supply noise
because the smaller capacitor has lower equivalent
series resistance (ESR) and equivalent series induc­tance (ESL).

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

10 ______________________________________________________________________________________

MAX9652/MAX9653/MAX9654

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

______________________________________________________________________________________ 11

Figure 2. Triple DAC is connected to both a SCART device and a high-definition, video-filter amplifier. (A) SCART device is transmit­ting standard-definition RGB signals while the HD filter amplifier is in shutdown mode; (B) SCART device is not transmitting RGB sig­nals, but the HD filter amplifier device is transmitting high-definition YPbPr signals.

A)

SET-TOP BOX

CHIP

DAC

DAC

DAC

B)

SET-TOP BOX

CHIP

DAC

ENC_R/C_IN

ENC_G_IN

ENC_B_IN

YIN

PBIN

PRIN

SHDN

ENC_R/C_IN

ENC_G_IN

ENC_B_IN

MAX9598

MAX9653
MAX9654

OFF

MAX9598

OFF

TV_R/C_OUT

TV_G_OUT

TV_B_OUT

YOUT

PBOUT

PROUT

TV_R/C_OUT

TV_G_OUT

TV_B_OUT

75Ω

75Ω

75Ω

75Ω

75Ω

75Ω

75Ω

75Ω

75Ω

SCART
CONNECTOR

YPbPr OUTPUTS

SCART
CONNECTOR

DAC

DAC

V

DD

YIN

PBIN

PRIN

SHDN

MAX9653
MAX9654

YOUT

PBOUT

PROUT

75Ω

75Ω

75Ω

YPbPr OUTPUTS

MAX9652/MAX9653/MAX9654

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

12 ______________________________________________________________________________________

Block Diagram

+3.3V

V

DD

MAX9652

300mV

MAX9653
MAX9654

UNKNOWN

BIAS

SHDN

SD/HD

2

1

YIN

PBIN

PRIN

1 MAX9654 ONLY.
2 MAX9653 AND MAX9654 ONLY.
3 FOR THE MAX9654, THE PASSBAND IS SELECTABLE BETWEEN SD AND HD. FOR THE MAX9652/MAX9653, THE PASSBAND IS HD.

CLAMP

KEYED

CLAMP

KEYED

CLAMP

SD/HD

SD/HD

SD/HD

3

3

3

GND

2V/V

2V/V

2V/V

YOUT

PBOUT

PROUT

MAX9652/MAX9653/MAX9654

Pin Configurations

Chip Information

PROCESS: BiCMOS

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

______________________________________________________________________________________ 13

TOP VIEW

YIN

DD

PBIN

+++

1

2

MAX9652

3

4

SO

87YOUT

GNDV

PBOUT

6

PROUTPRIN

5

YIN

SHDN

V

YIN

SHDN

V

1

2

MAX9654

3

DD

4

5

μMAX

1

2

MAX9653

3

DD

4

5

10

YOUT

9

GND

8

GND

7

PBOUTPBIN

PROUTPRIN

6

μMAX

10

YOUT

9

SD/HD

8

GND

7

PBOUTPBIN

PROUTPRIN

6

MAX9652/MAX9653/MAX9654

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

14 ______________________________________________________________________________________

Package Information

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages

.)

MAX9652/MAX9653/MAX9654

3.3V, HD/SD Triple-Channel Filter Amplifiers
with Shutdown

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________

15

© 2008 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.

Package Information (continued)

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages

.)

α

10LUMAX.EPS

α