19-4431; Rev 2; 11/11
KIT
ATION
EVALU
BLE
AVAILA
DirectDrive Video Amplifier with
Short-to-Battery Protection
General Description
Features
o
Short-to-Battery Protection on Video Output (Up
to 18V)
o
DirectDrive Sets Video Output Black Level Near
Ground
o
DirectDrive Eliminates DC-Blocking Capacitors at
the Output
o
3.3V Single-Supply Operation
o
Reconstruction Filter with 9.5MHz Passband and
42dB Attenuation at 27MHz
o
DC-Coupled Input/Output
o
Transparent Input Sync-Tip Clamp
o
4V/V Internal Fixed Gain
MAX9532
The MAX9532 DirectDrive
®
video filter amplifier is
specifically designed to work in harsh environments
such as automobiles. The MAX9532 provides integrat-
ed short-to-battery protection, allowing the output of the
device to survive shorts up to 18V.
Maxim’s DirectDrive technology eliminates large output
coupling capacitors and sets the output video black
level near ground. DirectDrive requires an integrated
charge pump and an internal linear regulator to create
a clean negative power supply so that the amplifier can
pull the sync below ground. The charge pump injects
so little noise into the video output that the picture is
visibly flawless.
The MAX9532 features an internal reconstruction filter
that smoothes the steps and reduces the spikes on the
video signal from the video digital-to-analog converter
(DAC). The reconstruction filter typically provides ±1dB
passband flatness of 9.5MHz and 42dB attenuation at
27MHz.
The input of the MAX9532 can be directly connected to
the output of a video DAC. The MAX9532 also features a
transparent input sync-tip clamp, allowing AC-coupling
of input signals with different DC biases.
The MAX9532 features an internal fixed gain of 4V/V. The
input full-scale video signal is nominally 0.5V
P-P
, and the
output full-scale video signal is nominally 2V
P-P
.
The short-to-battery protection utilizes an internal switch
in series with the amplifier output. When the MAX9532
detects that the output is short circuited to the battery
voltage, the internal switch is disabled, protecting the
MAX9532 from voltages up to 18V.
The MAX9532 is available in a 3mm x 3mm, 10-pin
µMAX
®
package and is specified over the -40°C to
+125°C automotive operating temperature range.
Applications
Automotive Infotainment Systems
Ordering Information
PART
MAX9532AUB/V+T
MAX9532AUB+
PIN-PACKAGE
10 µMAX
10 µMAX
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
+Denotes
a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
T
= Tape and reel.
Pin Configuration and Functional Diagram/Typical
Application Circuits appear at end of data sheet.
Simplified Block Diagram
MAX9532
500mV
P-P
VIDEO
IN
LPF
A
V
= 4V/V
TRANSPARENT
CLAMP
0V
LINEAR
REGULATOR
CHARGE
PUMP
JACKSENSE
OUT
2V
P-P
VIDEO
DirectDrive is a registered trademark of Maxim Integrated Products, Inc.
µMAX is a registered trademark of Maxim Integrated Prodcuts, Inc.
________________________________________________________________
Maxim Integrated Products
1
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.
DirectDrive Video Amplifier with
Short-to-Battery Protection
MAX9532
ABSOLUTE MAXIMUM RATINGS
V
DD
to GND ..............................................................-0.3V to +4V
V
DD
to CPGND .........................................................-0.3V to +4V
CPGND to GND.....................................................-0.1V to +0.1V
IN to GND .................................................................-0.3V to +4V
JACKSENSE to GND........................................The higher of V
SS
and -2V to (V
SS
+ 22V)
OUT to GND ............The higher of V
SS
and -1.5V to (V
SS
+ 22V)
V
SS
to CPVSS ........................................................-0.1V to +0.1V
Continuous Current
IN, JACKSENSE............................................................±20mA
C1P, C1N, CPVSS ........................................................±50mA
OUT ..............................................................................±50mA
Continuous Power Dissipation (T
A
= +70°C)
10-Pin µMAX (derate 8.8mW/°C above +70°C) ........707.3mW
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
Soldering Temperature (reflow) .......................................+260°C
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.
ELECTRICAL CHARACTERISTICS
(V
DD
= 3.3V, V
GND
= V
CPGND
= 0V, R
L
= 100Ω to GND, C
1
= C
2
= C
3
= 1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical val-
ues are at T
A
= +25°C.) (Note 1)
PARAMETER
DC-COUPLED INPUT
Guaranteed by output voltage swing
3V < V
DD
< 3.135V
Guaranteed by output voltage swing
3.135V < V
DD
< 3.6V
V
IN
= 0.5V
0.1V
≤
V
IN
≤
0.5V
Sync-tip clamp
Guaranteed by output voltage swing
3V < V
DD
< 3.135V
Guaranteed by output voltage swing
V
DD
> 3.135V
Sync-tip clamp; percentage reduction in
sync pulse (0.15V
P-P
, 75Ω source
impedance), guaranteed by input clamping
current measurement
Sync-tip clamp
2
300
V
DD
A
V
Guaranteed by PSRR
Guaranteed by output voltage swing
V
IN
= 150mV
3.0
3.92
-0.120
3.3
15
4
3.6
23
4.08
+0.150
-6.2
0
0
0
0
2
5
-1.63
+3.5
0.5
V
P-P
0.7
0.5
V
0.7
3.3
µA
MΩ
mV
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Input Voltage Range
V
IN
Input Current
Input Resistance
SYNC-TIP CLAMP INPUT
Sync-Tip Clamp Level
I
IN
R
IN
V
CLP
Input Voltage Range
Sync Crush
2.3
%
Input Clamping Current
Max Input Source Resistance
GENERAL
Supply Voltage Range
Quiescent Supply Current
DC Voltage Gain
Output Level
3.3
µA
Ω
V
mA
V/V
V
2
_______________________________________________________________________________________
DirectDrive Video Amplifier with
Short-to-Battery Protection
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 3.3V, V
GND
= V
CPGND
= 0V, R
L
= 100Ω to GND, C
1
= C
2
= C
3
= 1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical val-
ues are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
Measured at output, V
DD
= 3.135V,
V
IN
= V
CLP
to (V
CLP
+ 0.7V), R
L
= 100Ω to
-2V and +2V
Measured at output, V
DD
= 3V, V
IN
= V
CLP
to (V
CLP
+ 0.5V), R
L
= 100Ω to -2V and +2V
Output Short-Circuit Current
Output Resistance
Short Circuit to Battery Current
Power-Supply Rejection Ratio
R
OUT
Short-to-battery, V
OUT
= 9V to 16V
3.0V
≤
V
DD
≤
3.6V
V
IN
= 0.5V
P-P
, reference
frequency is 100kHz
Attenuation at
5.5MHz
Attenuation at
f = 27MHz
46
-1.29
20
42
0.7
0.5
%
deg
78
+1
dB
MIN
2.744
TYP
2.8
MAX
2.856
V
P-P
1.96
2
90
0.1
3
2.04
mA
Ω
mA
dB
UNITS
MAX9532
Output Voltage Swing
Filter
Differential Gain
Differential Phase
DG
DP
5-step modulated staircase, f = 4.43MHz,
R
L
= 100Ω to -2V and +2V
5-step modulated staircase, f = 4.43MHz,
R
L
= 100Ω to -2V and +2V
2T = 200ns; bar time is 18µs; the beginning
2.5% and the ending 2.5% of the bar time is
ignored; R
L
= 100Ω to -2V and +2V
2T = 200ns, R
L
= 100Ω to -2V and +2V
2T = 200ns; bar time is 18µs; the beginning
2.5% and the ending 2.5% of the bar time is
ignored; R
L
= 100Ω to -2V and +2V
5-step staircase; R
L
= 100Ω to -2V and +2V
100kHz
≤
f
≤
5MHz, outputs are 2V
P-P
;
R
L
= 100Ω to -2V and +2V
Measured at outputs, R
L
= 100Ω to -2V and
+2V
100kHz
≤
f
≤
5MHz, R
L
= 100Ω to -2V and
+2V
f = 100kHz, 100mV
P-P
; R
L
= 100Ω to -2V
and +2V
f = 5MHz
120
Referred to GND
After detection of short-to-battery
After short-to-battery has been removed
4.9
7.3
2T Pulse-to-Bar K Rating
2T Pulse Response
2T Bar Response
Nonlinearity
Group Delay Distortion
Glitch Impulse Caused by
Charge Pump Switching
Peak Signal to RMS Noise
Power-Supply Rejection Ratio
Output Impedance
JACKSENSE Input Resistance
BATTERY DETECTION
Threshold Accuracy
Video Output Disconnect Time
Video Output Connect Time
0.5
0.4
0.1
0.1
13
40
64
47
2
250
8
20
10
20
8.7
K%
K%
K%
%
ns
pVs
dB
dB
Ω
kΩ
V
µs
ms
_______________________________________________________________________________________
3
DirectDrive Video Amplifier with
Short-to-Battery Protection
MAX9532
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 3.3V, V
GND
= V
CPGND
= 0V, R
L
= 100Ω to GND, C
1
= C
2
= C
3
= 1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical val-
ues are at T
A
= +25°C.) (Note 1)
PARAMETER
CHARGE PUMP
Switching Frequency
f
CP
220
440
660
kHz
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Note 1:
All devices are 100% production tested at T
A
= +25°C. Specifications over temperature limits are guaranteed by design.
Typical Operating Characteristics
(V
DD
= 3.3V, V
GND
= V
CPGND
= 0V, video output has R
L
= 100Ω to GND, C
1
= C
2
= C
3
= 1μF, T
A
= +25°C, unless otherwise noted.)
SMALL-SIGNAL GAIN FLATNESS
vs. FREQUENCY
MAX9532 toc01
SMALL-SIGNAL GAIN vs. FREQUENCY
5
0
-5
-10
GAIN (dB)
GAIN (dB)
-15
-20
-25
-30
-35
-40
0.1
V
IN
= 0.025V
P-P
1
10
100
1.0
0.8
0.6
0.4
LARGE-SIGNAL GAIN vs. FREQUENCY
MAX9532 toc02
0
-5
-10
GAIN (dB)
-15
-20
-25
-30
-35
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0.1
V
IN
= 0.025V
P-P
1
10
100
V
IN
= 0.5V
P-P
0.1
1
10
100
-40
FREQUENCY (MHz)
NOTE:
GAIN VALUES (PLOTTED IN dB) ARE NORMALIZED
VALUES RELATIVE TO THE EXPECTED VALUE OF 4V/V.
FREQUENCY (MHz)
NOTE:
GAIN VALUES (PLOTTED IN dB) ARE NORMALIZED
VALUES RELATIVE TO THE EXPECTED VALUE OF 4V/V.
FREQUENCY (MHz)
NOTE:
GAIN VALUES (PLOTTED IN dB) ARE NORMALIZED
VALUES RELATIVE TO THE EXPECTED VALUE OF 4V/V.
LARGE-SIGNAL GAIN FLATNESS
vs. FREQUENCY
MAX9532 toc04
GROUP DELAY vs. FREQUENCY
MAX9532 toc05
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
-10
-20
-30
PSRR (dB)
-40
-50
-60
-70
-80
V
RIPPLE
= 100mV
P-P
MAX9532 toc06
1.0
0.8
0.6
0.4
GAIN (dB)
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0.1
100
80
GROUP DELAY (ns)
60
40
20
0
-20
0
V
IN
= 0.5V
P-P
-40
1
10
100
0.1
V
IN
= 0.5V
P-P
1
10
100
-90
-100
0.1
1
10
100
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
NOTE:
GAIN VALUES (PLOTTED IN dB) ARE NORMALIZED
VALUES RELATIVE TO THE EXPECTED VALUE OF 4V/V.
4
_______________________________________________________________________________________
MAX9532 toc03
5
DirectDrive Video Amplifier with
Short-to-Battery Protection
Typical Operating Characteristics (continued)
(V
DD
= 3.3V, V
GND
= V
CPGND
= 0V, video output has R
L
= 100Ω to GND, C
1
= C
2
= C
3
= 1μF, T
A
= +25°C, unless otherwise noted.)
QUIESCENT CURRENT vs. TEMPERATURE
MAX9532 toc07
MAX9532
DC GAIN vs. TEMPERATURE
4.018
4.016
4.014
GAIN (V/V)
4.012
4.010
4.008
4.006
4.004
4.002
4.000
MAX9532 toc08
14.70
14.69
14.68
SUPPLY CURRENT (mA)
14.67
14.66
14.65
14.64
14.63
14.62
14.61
14.60
14.59
-40
10
60
110
TEMPERATURE (°C)
V
SS
= 3.3V
V
IN
= 0V
NO LOAD
4.020
-40
10
60
110
TEMPERATURE (°C)
OUTPUT VOLTAGE vs. INPUT VOLTAGE
DIFFERENTIAL GAIN (%)
MAX9532 toc09
DIFFERENTIAL GAIN AND PHASE
0.5
0
-0.5
-1.0
1
1.0
0.5
0
-0.5
-1.0
1
2
3
4
5
f = 3.58MHz
T
A
= +25°C
6
7
2
3
4
5
f = 3.58MHz
T
A
= +25°C
6
7
MAX9532 toc10
3
OUTPUT VOLTAGE (V)
2
1
0
-1
-2
A
V
= 4.012V/V
1.0
-0.2
0
0.2
0.4
0.6
0.8
1.0
INPUT VOLTAGE (V)
DIFFERENTIAL PHASE (deg)
DIFFERENTIAL PHASE
DIFFERENTIAL GAIN AND PHASE
DIFFERENTIAL GAIN (%)
0.5
0
-0.5
-1.0
1
1.0
0.5
0
-0.5
-1.0
1
2
3
4
5
f = 4.43MHz
T
A
= +25°C
6
7
2
3
4
5
6
7
f = 4.43MHz
T
A
= +25°C
MAX9532 toc11
2T RESPONSE
MAX9532 toc12
1.0
V
IN
100mV/div
DIFFERENTIAL PHASE (deg)
DIFFERENTIAL PHASE
V
OUT
400mV/div
100ns/div
_______________________________________________________________________________________
5
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