DATASHEET

EL5228
®
Data Sheet
PRELIMINARY
March 25, 2004
FN7368
VCOM with Dual Gamma Buffer
Features
The EL5228 integrates a high power
VCOM amplifier with dual gamma
reference voltage buffers. With 180mA
peak and 65mA typical output current, the VCOM amplifier is
suitable for all sizes of LCD displays. The dual gamma
buffers can output 30mA typical, 120mA peak and feature a
bandwidth of 12MHz and a slew rate of 15V/µs. The VCOM
amplifier has a 44MHz bandwidth and 80V/µs slew rate.
• High power VCOM amplifier
- 180mA peak (65mA typ.) output current
- 55MHz bandwidth
- 75V/µs slew rate
The EL5228 operates from just 3.5mA typical supply current
and is packaged in the high-power DFN-10 package. It is
specified for operation over the -40°C to +85°C temperature
range.
• Dual gamma buffers
- 120mA peak (30mA typ.) output current
- 12MHz bandwidth
- 10V/µs slew rate
• Just 3.5mA supply current
• Small DFN-10 package
Applications
Pinout
• TFT-LCD displays
EL5228
(10-PIN DFN)
TOP VIEW
TOP VIEW
VOUTA 1
• Notebook displays
10 VOUTB
9 VINB
VINA 2
VDD 3
• Flat panel monitors
THERMAL
PAD
8 VSS
VINC+ 4
7 NC
VINC- 5
6 VOUTC
1
• LCD-TVs
Ordering Information
PART
NUMBER
PACKAGE
TAPE & REEL
PKG. DWG. #
EL5228IL
10-Pin DFN
-
MDP0047
EL5228IL-T13
10-Pin DFN
13”
MDP0047
EL5228IL-T7
10-Pin DFN
7”
MDP0047
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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EL5228
Absolute Maximum Ratings (TA = 25°C)
VCC Supply Voltage between VS and GND . . . . . . . . . . . . . .
Supply Voltage between VSD and GND . . . . . . . . . . . . . . . . . .
Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . .
Ambient Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . .
TBD
TBD
TBD
TBD
Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . TBD
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TBD
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests
are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications
PARAMETER
VS+ = +15V, VS- = 0V, RL = 1kΩ to 7.5V, TA = 25°C unless otherwise specified.
DESCRIPTION
CONDITION
MIN
TYP
MAX
UNIT
14
mV
GAMMA BUFFER INPUT CHARACTERISTICS
VOS
Input Offset Voltage
VCM = 7.5V
2
TCVOS
Average Offset Voltage Drift
(Note 1)
5
IB
Input Bias Current
VCM= 7.5V
2
RIN
Input Impedance
1
GΩ
CIN
Input Capacitance
2
pF
AV
Voltage Gain
0.5 ≤ VOUT ≤ 14.5V, RL = 10kΩ
0.995
µV/°C
50
nA
1.005
V/V
150
mV
GAMMA BUFFER OUTPUT CHARACTERISTICS
VOL
Output Swing Low
IL = -5mA
VOH
Output Swing High
IL = 5mA
ISC
Short Circuit Current
Short to GND (Note 2)
80
14.85
14.92
V
±80
±120
mA
7
10
V/µs
GAMMA BUFFER DYNAMIC PERFORMANCE
SR
Slew Rate (Note 3)
1V ≤ VOUT ≤14V, 20% to 80%, RL = 10kΩ
tS
Settling to +0.1%
VO = 2V Step
500
ns
BW
-3dB Bandwidth
RL = 10kΩ, CL = 10pF
12
MHz
CS
Channel Separation
f = 5MHz
75
dB
VCM = 7.5V
3
VCOM AMPLIFIER INPUT CHARACTERISTICS
VOS
Input Offset Voltage
15
TCVOS
Average Offset Voltage Drift (Note 4)
IB
Input Bias Current
RIN
Input Impedance
1
GΩ
CIN
Input Capacitance
2
pF
CMIR
Common-Mode Input Range
CMRR
Common-Mode Rejection Ratio
for VIN from -0.5V to 15.5V
53
72
dB
AVOL
Open-Loop Gain
0.5V ≤ VOUT ≤ 14.5V
62
70
dB
7
VCM = 7.5V
2
-0.5
mV
µV/°C
60
+15.5
nA
V
VCOM AMPLIFIER OUTPUT CHARACTERISTICS
VOL
Output Swing Low
IL = -5mA
VOH
Output Swing High
IL = 5mA
ISC
IOUT
80
mV
14.92
V
Short-circuit Current
±180
mA
Output Current
±65
mA
2
14.85
150
EL5228
Electrical Specifications
PARAMETER
VS+ = +15V, VS- = 0V, RL = 1kΩ to 7.5V, TA = 25°C unless otherwise specified.
DESCRIPTION
CONDITION
MIN
TYP
MAX
UNIT
VCOM AMPLIFIER DYNAMIC PERFORMANCE
SR
Slew Rate (Note 5)
1V ≤ VOUT ≤ 14V, 20% to 80%
75
V/µs
tS
Settling to +0.1% (AV = +1)
(AV = +1), VO = 2V step
80
ns
BW
-3dB Bandwidth
60
MHz
GBWP
Gain-Bandwidth Product
32
MHz
PM
Phase Margin
50
°
dG
Differential Gain (Note 6)
RF = RG = 1kΩ and VOUT = 1.4V
0.16
%
dP
Differential Phase (Note 6)
RF = RG = 1kΩ and VOUT = 1.4V
0.22
°
80
dB
POWER SUPPLY PERFORMANCE
PSRR
Power Supply Rejection Ratio
VS is moved from 4.5V to 15.5V
IS
Supply Current
No load
60
3.5
5
mA
NOTES:
1. Measured over the operating temperature range
2. Parameter is guaranteed (but not test) by design and characterization data
3. Slew rate is measured on rising and falling edges
4. Measured over operating temperature range
5. Slew rate is measured on rising and falling edges
6. NTSC signal generator used
Typical Application Diagram
VS+
INA
OUTA
INB
OUTB
INC+
+
INC-
-
OUTC
VS-
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Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
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