SGM9121
8MHz, 5th-Order Video Driver
with 6dB Gain
PRODUCT DESCRIPTION
The SGM9121 is a single rail-to-rail 5th-order output
reconstruction filter with a -3dB bandwidth of 8MHz and
34.8V/µs slew rate. Operating from single power supply
ranging from 3.0V to 5.5V and sinking an ultra-low 7mA
quiescent current, the SGM9121 is ideally suited for low
power, battery-operated applications.
SGM9121 employs an internal level shift circuit that
avoids sync-pulse clipping and allows DC-coupled output.
If AC coupling is preferred, the SGM9121 offers a
sag-correction feature that significantly reduces the size
of the output coupling capacitor.
SGM9121 has a power-down disable feature that
reduces the supply current to 0.72μA, dramatically
reducing power consumption and prolonging battery life.
It is specified over the extended -40°C to +85°C
temperature range.
FEATURES
Excellent Video Performance
5th-Order Reconstruction Filter
Internal Gain: 6dB
Rail-to-Rail Output
SAG Correction Reduces AC Coupling
Capacitor Size
Input Voltage Range Includes Ground
AC-Coupled Input
Single Power Supply: 3.0V to 5.5V
Low Power
7mA Typical Supply Current
0.72μA Supply Current when Disabled
Available in Green SC70-6 Package
APPLICATIONS
Video Amplifiers
Cable and Satellite Set-Top Boxes
Communication Devices
Video on Demand
Portable and Handheld Products
Personal Video Recorders
DVD Players
HDTV
BLOCK DIAGRAM
V
CC
= 3.0V to 5.5V
10kΩ
V
CC
DISABLE
To External Power
Supply or Control I/O
IN
5th-Order
Filter
Level
Shifter
OUT
6dB
SAG
SGM9121
GND
NOTES:
1. A 10kΩ resistor must be serially connected to
DISABLE
pin.
2. Power supply V
CC
must be sequenced on first before input
video signals.
SG Micro Corp
www.sg-micro.com
REV. A. 3
SGM9121
PACKAGE/ORDERING INFORMATION
ORDER NUMBER
SGM9121YC6G/TR
PACKAGE
DESCRIPTION
SC70-6
TEMPERATURE
RANGE
-40℃ to +85℃
8MHz, 5th-Order Video Driver
with 6dB Gain
PACKAGE
OPTION
Tape and Reel, 3000
MARKING
INFORMATION
S0AXX
NOTE: Order number and package marking are defined as the follow:
ORDER NUMBER
SGM9121 X X G / TR
Tape and Reel
Green Product
Package Type
C6
SC70-6
MARKING INFORMATION
S0A X X
Date code - Month ("A" = Jan. "B" = Feb.
…
"L" = Dec.)
Date code - Year ("9" = 2009, "A" = 2010
…)
Chip I.D.
For example: S0A9A (2009, January)
Operating Temperature Range
Y
-40℃ to +85℃
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
CC
to GND...................................................6V
Input Voltage...................................... GND - 0.3V to V
CC
+ 0.3V
Storage Temperature Range..............................-65℃ to +150℃
Junction Temperature ...................................................... 150℃
Operating Temperature Range........................... -40℃ to +85℃
Lead Temperature Range (Soldering 10 sec)................... 260℃
ESD Susceptibility
HBM................................................................................. 8000V
MM......................................................................................400V
NOTE:
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.
CAUTION
This integrated circuit can be damaged by ESD if you don’t pay
attention to ESD protection. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions.
Failure to observe proper handling and installation procedures
can cause damage. ESD damage can range from subtle
performance degradation to complete device failure. Precision
integrated circuits may be more susceptible to damage because
very small parametric changes could cause the device not to
meet its published specifications.
SGMICRO reserves the right to make any change in circuit
design, specification or other related things if necessary without
notice at any time. Please contact SGMICRO sales office to get
the latest datasheet.
SG Micro Corp
www.sg-micro.com
2
SGM9121
PIN CONFIGURATION
(TOP VIEW)
8MHz, 5th-Order Video Driver
with 6dB Gain
IN
GND
SAG
1
2
3
6
5
4
V
CC
DISABLE
OUT
SC70-6
S0AXX
PIN DESCRIPTION
PIN
1
2
3
4
5
6
NAME
IN
GND
SAG
OUT
DISABLE
FUNCTION
Signal Input.
Ground.
SAG Correction.
Signal Output.
Shutdown Input.
Power Supply.
V
CC
SG Micro Corp
www.sg-micro.com
3
SGM9121
8MHz, 5th-Order Video Driver
with 6dB Gain
ELECTRICAL CHARACTERISTICS: V
CC
= 5.0V
PARAMETER
INPUT CHARACTERISTICS
Output Level Shift Voltage (V
OLS
)
Input Voltage Clamp (V
CLAMP
)
Clamp Charge Current
Clamp Discharge Current
Voltage Gain (A
V
)
OUTPUT CHARACTERISTICS
Output Voltage High Swing
V
IN
= 3.0V, R
L
= 150Ω to GND
V
IN
= 0.5V, Out shorted to GND through 10Ω
Output Short-Circuit Current (I
SC
)
V
IN
= 1.5V, Out shorted to V
CC
through 10Ω
POWER SUPPLY
Operating Voltage Range (V
CC
)
Power Supply Rejection Ratio (PSRR)
Quiescent Current (I
Q
)
Supply Current when Disabled
DYNAMIC PERFORMANCE
-0.1dB Bandwidth
-3dB Bandwidth
Filter Response (Normalized Gain)
Slew Rate
Differential Gain Error (DG)
Differential Phase Error (DP)
Group Delay Variation (D/DT)
Fall Time
Rise Time
POWER-DOWN DISABLE
DISABLE (Logic-Low Threshold)
DISABLE (Logic-High Threshold)
(At R
L
= 150Ω connected to GND, V
IN
= 1V
PP
and C
IN
= 0.1μF, all outputs AC-coupled, referenced to 400kHz, unless otherwise noted.)
CONDITIONS
TEMP
+25°C
-40°C to +85°C
+25°C
-40°C to +85°C
+25°C
-40°C to +85°C
+25°C
-40°C to +85°C
+25°C
-40°C to +85°C
+25°C
-40°C to +85°C
+25°C
-40°C to +85°C
+25°C
-40°C to +85°C
+25°C
V
CC
= 3.5V to 5.0V
V
IN
= 0.5V,
DISABLE
= V
CC
, R
L
= 0
+25°C
-40°C to +85°C
+25°C
-40°C to +85°C
+25°C
-40°C to +85°C
+25°C
+25°C
f
IN
= 27MHz
2V Output step, 80% to 20%
PAL DC-coupled
PAL AC-coupled
PAL DC-coupled
PAL AC-coupled
Difference between 400kHz and 6.5MHz
2V Output step, 80% to 20%
2V Output step, 80% to 20%
V
CC
= 5V
V
CC
= 5V
MIN
TYP
344
MAX
480
587
UNITS
V
IN
= 0V, No load
I
IN
= - 3.5mA
V
IN
= V
CLAMP
- 100mV
V
IN
= 500mV
R
L
= 150Ω
mV
mV
mA
-180
-269
-6.0
-6.4
-111
-4.8
1.9
3
7
6.4
6.5
4.79
122
-131
-100
-89
µA
dB
5.6
5.5
4.60
4.57
90
80
6
V
mA
mA
3.0
45
44
7.0
0.72
52
5.5
V
dB
9.5
11
10
13
mA
μA
DISABLE
= 0V
5.56
7.76
42.4
34.8
0.53
0.27
1.30
1.09
30.3
34.5
35.7
0.4
1.2
MHz
MHz
dB
V/µs
%
%
°
°
ns
ns
ns
V
V
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
SG Micro Corp
www.sg-micro.com
4
SGM9121
8MHz, 5th-Order Video Driver
with 6dB Gain
TYPICAL PERFORMANCE CHARACTERISTICS
At V
CC
= 5V, T
A
= +25℃, R
L
= 150Ω, all outputs AC-coupled, unless otherwise noted.
Frequency Response
3
Normalized Gain (dB)
0
-3
-6
-9
-12
-15
0.1
1
10
Frequency (MHz)
100
Phase vs. Frequency
270
180
Phase (degree)
90
0
-90
-180
-270
0.1
1
10
Frequency (MHz)
100
Large Signal Step Response
0.75
0.5
Output Voltage (V)
Small Signal Step Response
0.3
0.2
Output Voltage (V)
0.1
0
-0.1
-0.2
-0.3
0.25
0
-0.25
-0.5
-0.75
-0.3 -0.2 -0.1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
-0.3 -0.2 -0.1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Time (μs)
Time (μs)
Group Delay vs. Frequency
100
Quiescent Current (mA)
8
Quiescent Current vs. Supply Voltage
Group Delay (ns)
50
7
0
6
-50
5
-100
0.1
1
10
Frequency (MHz)
100
4
3
3.5
4
4.5
Supply Voltage (V)
5
5.5
SG Micro Corp
www.sg-micro.com
5
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