Rainbow Electronics MAX9589 User Manual

General Description

The MAX9586–MAX9589 are small, low-power, multi­channel video amplifiers with integrated reconstruction
filters and input clamps. Specially suited for standard­definition video signals, these devices are ideal for a
wide range of television and set-top box applications.

The video signals from the outputs of a digital-to-analog
converter (DAC) are AC-coupled to the inputs of the
MAX9586–MAX9589. External video signals, in which
the DC bias is usually not known, can also be AC-cou­pled to the inputs of the MAX9586–MAX9589. The input
sync-tip clamps set the DC level of composite video or
luma signals, and the input bias circuits set the DC
level of chroma signals.

The reconstruction filter typically has ±1dB passband
flatness at 7MHz and 62dB attenuation at 27MHz. The
amplifiers have 2V/V gain and the outputs can be DC­coupled to a 75Ω load, which is the equivalent of two
video loads, or AC-coupled to a 150Ω load.

The MAX9586–MAX9589 operate from a 2.7V to 3.6V sin­gle supply and are specified over the -40°C to +125°C
automotive temperature range. The MAX9586–MAX9589
are offered in small SOT23 and µMAX

®

packages.

Applications

Set-Top Boxes

Televisions

Features

 Single- (MAX9586), Dual- (MAX9587),

Triple- (MAX9588), and Quad- (MAX9589)
Channel Devices

 7MHz, ±1dB Passband
 62dB Attenuation at 27MHz
 Fixed Gain of 2V/V
 Low Power: 4.25mA per Channel
 2.7V to 3.6V Single-Supply Operation
 Small SOT23 and µMAX Packages

MAX9586–MAX9589

Single, Dual, Triple, and Quad Standard-Definition

Video Filter Amplifiers with AC-Coupled Input Buffers

________________________________________________________________

Maxim Integrated Products

1

Block Diagrams

19-0744; Rev 0; 2/07

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.

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

Ordering Information

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

+

Denotes a lead-free package.

*

Future product—contact factory for availability.

**

EP = Exposed paddle.

Block Diagrams continued at end of data sheet.

Pin Configurations and Selector Guide located at end of
data sheet.

PART

MAX9586AZK+T

MAX9586ATT+T*

MAX9587AZT+T*

MAX9587ALT+T*

MAX9588AUA+T*

MAX9588ALA+T*

MAX9589AUB+T*

MAX9589ATC+T* 12 TQFN-EP** 4 T1233-4

PIN­PACKAGE

5 Thin SOT23-5

6 TDFN-EP**

6 Thin SOT23-6

6 µDFN-6

8 µMAX-8

8 µDFN-8

10 µMAX-10

CHANNELS

1 Z5-1

1 T633-2

2 Z6-1

2 L622-1

3 U8-1

3 L822-1

4 U10-2

PKG

CODE

UNKNOWN

BIAS

INA

INB

INC

CLAMP

CLAMP

BIAS

MAX9588

LPF

LPF

LPF

AV = 2V/V

AV = 2V/V

AV = 2V/V

300mV

OUTA

OUTB

OUTC

MAX9586–MAX9589

Single, Dual, Triple, and Quad Standard-Definition
Video Filter Amplifiers with AC-Coupled Input Buffers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(V

DD

= 3.3V, GND = 0V, VRL= 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

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

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

OUT_ Short Circuit Duration to V

DD

, GND .................Continuous

Continuous Input Current

IN_, SHDN ....................................................................±20mA

Continuous Power Dissipation (T

A

= +70°C)

5-Pin Thin SOT23 (derate 9.1mW/°C above +70°C)....727mW

6-Pin TDFN (derate 18.2mW/°C above +70°C) .........1455mW

6-Pin Thin SOT23 (derate 9.1mW/°C above +70°C)....727mW

6-Pin µDFN (derate 4.5mW/°C above +70°C) .............358mW

8-Pin µDFN (derate 4.8mW/°C above +70°C) ..........380.6mW

8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW

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

12-Pin 3mm x 3mm TQFN (derate 14.7mW/°C

above +70°C).............................................................1177mW

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

Supply Voltage Range V

Supply Current I

Shutdown Supply Current I

SHDN

Sync-Tip Clamp Level V

Input Voltage Range V

Guaranteed by PSRR 2.7 3.6 V

DD

Per channel 4.25 8 mA

DD

SHDN = GND 0.01 1 µA

Sync-tip clamp 0.23 0.39 V

CLP

Guaranteed by output

IN

voltage swing

Sync-tip clamp, percentage reduction in sync pulse

Sync Crush

(0.3V
measurement, measured at input

Input Clamping Current Sync-tip clamp 1 2 µA

Maximum Input Source
Resistance

DC Voltage Gain (Note 2) A

Guaranteed by output voltage swing 1.95 2 2.04 V/V

V

Measured at V

Output Level

IN_ = 0.1µF to GND,
R

L

Output-Voltage Swing Sync-tip clamp

), guaranteed by input clamping current

P-P

,

OUT

= 150Ω to GND

Measured at output, V
V

IN

R

L

Measured at output, V
V

IN

R

L

Measured at output, V
V

IN

R

L

Measured at output, V
V

IN

R

L

Measured at output, V

3.135V, V

1.05V), R

VDD = 2.7V to 3.6V 1.05

= 3V to 3.6V 1.2

V

DD

2%

300 Ω

Sync-tip clamp 0.22 0.3 0.39 V

= 2.7V,

= V

CLP

to (V

+ 1.05V),

CLP

DD

2.058 2.1 2.142

= 150Ω to -0.2V

= 2.7V,

= V

CLP

to (V

+ 1.05V),

CLP

DD

2.058 2.1 2.142

= 150Ω to VDD/2

= 3V,

= V

CLP

to (V

CLP

DD

+ 1.2V),

2.340 2.4 2.448

= 150Ω to -0.2V

= 3V,

= V

CLP

to (V

CLP

DD

+ 1.2V),

2.340 2.4 2.448

= 150Ω to VDD/2

=

CLP

DD

to (V

CLP

+

2.027 2.1 2.163

= V

IN

= 75Ω to -0.2V

L

V

P-P

V

P-P

MAX9586–MAX9589

Single, Dual, Triple, and Quad Standard-Definition

Video Filter Amplifiers with AC-Coupled Input Buffers

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(V

DD

= 3.3V, GND = 0V, VRL= 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

Output Short-Circuit
Current

Output Resistance R

Power-Supply Rejection
Ratio

Standard-Definition
Reconstruction Filter

Differential Gain DG

Differential Phase DP

2T Pulse-to-Bar K Rating

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

2T Bar Response

Nonlinearity 5-step staircase 0 %

Group Delay Distortion 100kHz ≤ f ≤ 5.5MHz, outputs are 2V

P eak S i g nal to RM S N oi se 100kHz ≤ f ≤ 5.5MHz 71 dB

Output Impedance f = 5.5MHz 4.8 Ω

All-Hostile Crosstalk f = 4.43MHz -64 dB

LOGIC SIGNAL

Logic-Low Threshold V

Logic-High Threshold V

Logic Input Current I

OUT

Short to GND (sourcing) 140

Short to V

V

OUT

2.7V ≤ VDD ≤ 3.6V 48

f = 1MHz, 100mV

±1dB passband flatness 7 MHz

V

OUT_

reference frequency is
100kHz

5-step modulated staircase of 129mV step size and
286mV peak-to-peak subcarrier amplitude,
f = 4.43MHz

5-step modulated staircase of 129mV step size and
286mV peak-to-peak subcarrier amplitude,
f = 4.43MHz

2T = 200ns, bar time is 18µs; the beginning 2.5%
and the ending 2.5% of the bar time are ignored

2T = 200ns, bar time is 18µs; the beginning 2.5%
and the ending 2.5% of the bar time are ignored

IL

IH

IN

= 1.5V, -10mA ≤ I

= 2V

(sinking) 70

DD

≤ +10mA 0.2 Ω

LOAD

P-P

P-P

,

f = 5.5MHz -0.7

f = 8.5MHz -3

f = 27MHz 62

P-P

0.7 x
V

DD

29

0.1 %

0.4 D eg r ees

0.6 K%

0.2 K%

9ns

0.3 x
V

DD

10 µA

mA

dB

dB

V

V

Typical Operating Characteristics

(VDD= SHDN = +3.3V, video outputs have RL = 150Ω connected to GND, TA= +25°C, unless otherwise noted.)

MAX9586–MAX9589

Single, Dual, Triple, and Quad Standard-Definition
Video Filter Amplifiers with AC-Coupled Input Buffers

4 _______________________________________________________________________________________

SMALL-SIGNAL GAIN

vs. FREQUENCY

10

V

= 100mV

OUT

0

-10

-20

-30

-40

GAIN (dB)

-50

-60

-70

-80
100k 100M

P-P

10M1M

FREQUENCY (Hz)

MAX9586 toc01

0.4

0.2

-0.2

-0.4

-0.6

GAIN (dB)

-0.8

-1.0

-1.2

-1.4

-1.6

LARGE-SIGNAL GAIN FLATNESS

vs. FREQUENCY

MAX9856 toc04

GROUP DELAY (ns)

140

120

100

0.4

V

= 2V

OUT

0.2

0

-0.2

-0.4

-0.6

GAIN (dB)

-0.8

-1.0

-1.2

-1.4

-1.6
100k 10M

P-P

1M

FREQUENCY (Hz)

SMALL-SIGNAL GAIN FLATNESS

vs. FREQUENCY

V

= 100mV

OUT

0

100k 10M

P-P

1M

FREQUENCY (Hz)

GROUP DELAY

vs. FREQUENCY

80

60

40

20

0

100k 100M

FREQUENCY (Hz)

10M1M

MAX9856 toc02

MAX9586 toc05

LARGE-SIGNAL GAIN

vs. FREQUENCY

10

V

= 2V

OUT

0

-10

-20

-30

-40

GAIN (dB)

-50

-60

-70

-80
100k 100M

P-P

10M1M

FREQUENCY (Hz)

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

0

-10

-20

-30

-40

PSRR (dB)

-50

-60

-70

-80

10k 100k 100M

FREQUENCY (Hz)

10M1M

MAX9586 toc03

MAX9586 toc06

QUIESCENT SUPPLY CURRENT

vs. TEMPERATURE

7.0

6.5

6.0

5.5

5.0

4.5

4.0

3.5

3.0

QUIESCENT SUPPLY CURRENT (mA)

2.5

2.0

-50 125
TEMPERATURE (°C)

2.04

2.03

MAX9586 toc07

2.02

2.01

2.00

1.99

1.98

VOLTAGE GAIN (V/V)

1.97

1.96

1.95

1007525 500-25

-50 125

VOLTAGE GAIN

vs. TEMPERATURE

TEMPERATURE (°C)

DIFFERENTIAL GAIN AND PHASE

0.1

0

-0.1

MAX9586 toc08

-0.2

-0.3

DIFFERENTIAL GAIN (%)

-0.4

0.8

0.6

0.4

0.2
0

-0.2

-0.4

DIFFERENTIAL PHASE (deg)

1007525 500-25

17

f = 4.43MHz

MAX9586 toc09

6543217

f = 4.43MHz

65432

MAX9586–MAX9589

Single, Dual, Triple, and Quad Standard-Definition

Video Filter Amplifiers with AC-Coupled Input Buffers

_______________________________________________________________________________________

5

Typical Operating Characteristics (continued)

(VDD= SHDN = +3.3V, video outputs have RL = 150Ω connected to GND, TA= +25°C, unless otherwise noted.)

2T RESPONSE

MAX9586 toc10

100ns/div

OUT_
400mV/div

IN_
200mV/div

12.5T RESPONSE

MAX9586 toc11

400ns/div

OUT_
400mV/div

IN_
200mV/div

NTC-7 VIDEO TEST SIGNAL

MAX9586 toc12

10µs/div

OUT_
1V/div

IN_
500mV/div

PAL MULTIBURST RESPONSE

MAX9586 toc13

10µs/div

OUT_
1V/div

IN_
500mV/div

PAL COLOR BARS

MAX9586 toc14

10µs/div

OUT_
1V/div

IN_
500mV/div

FIELD SQUARE-WAVE RESPONSE

MAX9586 toc15

2ms/div

OUT_
1V/div

IN_
500mV/div

INPUT-TO-INPUT CROSSTALK

vs. FREQUENCY

MAX9586 toc16

FREQUENCY (Hz)

GAIN (dB)

10M1M

-100

-80

-60

-40

-20

0

-120
100k 100M

OUTPUT-TO-OUTPUT CROSSTALK

vs. FREQUENCY

MAX9586 toc17

FREQUENCY (Hz)

GAIN (dB)

10M1M

-100

-80

-60

-40

-20

0

-120
100k 100M

OUTPUT IMPEDANCE

vs. FREQUENCY

MAX9586 toc18

FREQUENCY (Hz)

OUTPUT IMPEDANCE (Ω)

1M

0.1

1

10

100

0.01
100k 10M

MAX9586–MAX9589

Single, Dual, Triple, and Quad Standard-Definition
Video Filter Amplifiers with AC-Coupled Input Buffers

6 _______________________________________________________________________________________

Pin Description

Figure 1. Typical Application Circuits for the MAX9586/MAX9587 (Anti-Alias Filter)

PIN

MAX9586 MAX9587 MAX9588 MAX9589

5 SOT23 6 TDFN 6 SOT23 6 µDFN 8 µMAX 8 µDFN 10 µMAX 12 TQFN

13————— —SHDN

2 1 2 2 4 4 5 7 GND Ground

3 2 — — — — — — IN Video Input

— — 3 1 1 1 1 3 INA Video Input A

— — 1 3 2 2 2 4 INB Video Input B

— — — — 3 3 3 5 INC Video Input C

— — — — — — 4 6 IND Video Input D

4 6 — — — — — — OUT Video Output

— — 4 6 7 7 9 12 OUTA Video Output A

— — 6 4 6 6 8 11 OUTB Video Output B

— — — — 5 5 7 10 OUTC Video Output C

— — — — — — 6 9 OUTD Video Output D

54558810 1V

— 5 — — — — — 2, 8 N.C.

NAME FUNCTION

Active-Low Shutdown Input.
Connect to GND to shut down.

Positive Power Supply. Bypass to

DD

GND with a 0.1µF capacitor.

No Connection. Not internally
connected.

—EP———— — EPEP

V

GND

OUTCVBS

V

GND

OUTALUMA

OUTBCHROMA

DD

75Ω

DD

75Ω

75Ω

VIDEO

SWITCH

VIDEO

SWITCH

+3.3V

0.1µF

0.1µF

0.1µF

SHDN

INA

INB

MAX9586

IN

CLAMP

CLAMP

BIAS

LPF

MAX9587

LPF

LPF

AV = 2V/V

AV = 2V/V

AV = 2V/V

Exposed Paddle. Connect EP to
GND. EP is also internally
connected to GND.

3.3V

0.1µF

0.1µF

75Ω

3.3V

0.1µF

0.1µF

75Ω

0.1µF

75Ω

VIDEO

DECODER

VIDEO

DECODER

MAX9586–MAX9589

Single, Dual, Triple, and Quad Standard-Definition

Video Filter Amplifiers with AC-Coupled Input Buffers

_______________________________________________________________________________________ 7

Figure 2. Typical Application Circuits for the MAX9588/MAX9589 (Reconstruction Filter)

V

MPEG

DECODER

DD

V

DD

MAX9588

GND

3.3V

0.1µF

DAC

DAC

DAC

MPEG

DECODER

DAC

CVBS

LUMA

CHROMA

CVBS

0.1µF
INA

V

DD

0.1µF
INB

V

DD

0.1µF
INC

V

DD

CLAMP

CLAMP

BIAS

LPF

LPF

LPF

AV = 2V/V

AV = 2V/V

AV = 2V/V

MAX9589

0.1µF
INA

CLAMP

LPF

AV = 2V/V

OUTA

OUTB

OUTC

V

DD

GND

OUTA

75Ω

CVBS

75Ω

Y

75Ω

C

3.3V

0.1µF

75Ω

CVBS1

0.1µF

DAC

DAC

LUMA

CHROMA

INB

V

DD

0.1µF
INC

V

DD

0.1µF
IND

CLAMP

CLAMP

BIAS

LPF

LPF

LPF

AV = 2V/V

AV = 2V/V

AV = 2V/V

OUTB

OUTC

OUTD

75Ω

CVBS2

75Ω

Y

75Ω

C

MAX9586–MAX9589

Single, Dual, Triple, and Quad Standard-Definition
Video Filter Amplifiers with AC-Coupled Input Buffers

8 _______________________________________________________________________________________

Detailed Description

The MAX9586–MAX9589 filter and amplify the video
DAC output in applications such as set-top boxes and
televisions. These devices consist of input clamps,
input bias circuits, lowpass filters, and gain of 2V/V out­put amplifiers capable of driving a standard 150Ω
video load to ground.

Inputs

The input stages of the MAX9586–MAX9589 are either
sync-tip clamps or bias circuits. Sync-tip clamps accept
AC-coupled CVBS or luma video signals with sync puls­es. The sync-tip voltage is internally set to 300mV. Bias
circuit inputs accept AC-coupled chroma, a subcarrier
modulated with the color information. The bias voltage
of the bias circuits is approximately 500mV.

Video Filter

The filter passband (±1dB) is typically 7MHz, 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.

Outputs

The video output amplifiers can both source and sink
load current, allowing output loads to be DC- or AC­coupled. The amplifier output stage needs approxi­mately 300mV of headroom from either supply rail. The
devices have an internal level-shift circuit that positions
the sync tip at approximately 300mV at the output.

If the supply voltage is greater than 3.135V (5% below
a 3.3V supply), each amplifier can drive two DC-cou­pled video loads to ground. If the supply is less than

3.135V, each amplifier can drive only one DC-coupled
or AC-coupled video load.

Shutdown (MAX9586)

The MAX9586 draws less than 1µA supply current
when SHDN is low. In shutdown mode, the amplifier
output becomes high impedance.

Applications Information

AC-Coupling the Outputs

The outputs can be AC-coupled since the output stage
can source and sink current as shown in Figure 1.
Coupling capacitors should be 220µF or greater to
keep the highpass filter, formed by the 150Ω equivalent
resistance of the video transmission line, to a corner
frequency of 4.8Hz or below. The frame rate of PAL
systems is 25Hz, and the frame rate of NTSC systems
is 30Hz. The corner frequency should be well below the
frame rate.

Power-Supply Bypassing and Ground

The MAX9586–MAX9589 operate from a single-supply
voltage down to 2.7V, allowing for low-power operation.
Bypass VDDto GND with a 0.1µF capacitor. Place all
external components as close as possible to the device.