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PDF AD813 Data sheet ( Hoja de datos )
| Número de pieza | AD813 | |
| Descripción | Low Power Triple Video Amplifier | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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a
Single Supply, Low Power
Triple Video Amplifier
AD813
FEATURES
Low Cost
Three Video Amplifiers in One Package
Optimized for Driving Cables in Video Systems
Excellent Video Specifications (RL = 150 ⍀)
Gain Flatness 0.1 dB to 50 MHz
0.03% Differential Gain Error
0.06؇ Differential Phase Error
Low Power
Operates on Single +3 V to ؎15 V Power Supplies
5.5 mA/Amplifier Max Power Supply Current
High Speed
125 MHz Unity Gain Bandwidth (–3 dB)
500 V/s Slew Rate
High Speed Disable Function per Channel
Turn-Off Time 80 ns
Easy to Use
50 mA Output Current
Output Swing to 1 V of Rails
APPLICATIONS
Video Line Driver
LCD Drivers
Computer Video Plug-In Boards
Ultrasound
RGB Amplifier
CCD Based Systems
PRODUCT DESCRIPTION
The AD813 is a low power, single supply triple video amplifier.
Each of the three current feedback amplifiers has 50 mA of output
current, and is optimized for driving one back-terminated video
load (150 Ω). The AD813 features gain flatness of 0.1 dB to
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
G = +2
RL = 150⍀
؎15V
؎5V
3V
5V
100k
1M 10M
FREQUENCY – Hz
100M
Figure 1. Fine Scale Gain Flatness vs. Frequency,
G = +2, RL = 150 Ω
REV. B
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices 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 Analog Devices.
PIN CONFIGURATION
14-Lead DIP and SOIC
DISABLE1 1
DISABLE2 2
DISABLE3 3
VS+ 4
+IN1 5
–IN1 6
OUT1 7
AD813
14 OUT2
13 –IN2
12 +IN2
11 VS–
10 +IN3
9 –IN3
8 OUT3
50 MHz while offering differential gain and phase error of
0.03% and 0.06°. This makes the AD813 ideal for broadcast
and consumer video electronics.
The AD813 offers low power of 5.5 mA per amplifier max and
runs on a single +3 V power supply. The outputs of each ampli-
fier swing to within one volt of either supply rail to easily accom-
modate video signals. While operating on a single +5 V supply
the AD813 still achieves 0.1 dB flatness to 20 MHz and 0.05%
& 0.05° of differential gain and phase performance. All this is
offered in a small 14-lead plastic DIP or SOIC package. These
features make this triple amplifier ideal for portable and battery
powered applications where size and power are critical.
The outstanding bandwidth of 125 MHz along with 500 V/µs of
slew rate make the AD813 useful in many general purpose, high
speed applications where a single +3 V or dual power supplies
up to ± 15 V are needed. Furthermore the AD813 contains a
high speed disable function for each amplifier in order to power
down the amplifier or high impedance the output. This can then
be used in video multiplexing applications. The AD813 is avail-
able in the industrial temperature range of –40°C to +85°C in
plastic DIP and SOIC packages as well as chips.
500mV
100
90
500ns
10
0%
5V
Figure 2. Channel Switching Characteristics for a 3:1 Mux
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1998
1 page  
AD813–SPECIFICATIONS
Single Supply (@ TA = +25؇C, RL = 150 ⍀, unless otherwise noted)
Model
Conditions
DYNAMIC PERFORMANCE
–3 dB Bandwidth
G = +2, No Peaking
Bandwidth for 0.1 dB
Flatness
G = +2
Slew Rate1
G = +2, RL = 1 kΩ
NOISE/HARMONIC PERFORMANCE
Input Voltage Noise
Input Current Noise
Differential Gain Error2
Differential Phase Error2
DC PERFORMANCE
Input Offset Voltage
Offset Drift
–Input Bias Current
+Input Bias Current
Open-Loop Voltage Gain
Open-Loop Transresistance
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Input Common Mode
Voltage Range
Common-Mode Rejection Ratio
Input Offset Voltage
–Input Current
+Input Current
Input Offset Voltage
–Input Current
+Input Current
OUTPUT CHARACTERISTICS
Output Voltage Swing p-p
Output Current
Short Circuit Current
f = 10 kHz
f = 10 kHz, +In
–In
NTSC, G = +2, RL = 150 Ω
G = +1
G = +2
G = +1
TMIN–TMAX
TMIN–TMAX
TMIN–TMAX
VO = +2.5 V p-p
VO = +0.7 V p-p
VO = +3 V p-p
VO = +1 V p-p
+Input
–Input
+Input
VCM = 1.25 V to 3.75 V
VCM = 1 V to 2 V
RL = 150 Ω, TMIN–TMAX
G = +2, RF = 715 Ω
VIN = 1 V
VS
+5 V
+3 V
+5 V
+3 V
+5 V
+3 V
+5 V, +3 V
+5 V, +3 V
+5 V, +3 V
+5 V
+3 V
+5 V
+3 V
+5 V, +3 V
+5 V, +3 V
+5 V, +3 V
+5 V, +3 V
+5 V
+3 V
+5 V
+3 V
+5 V, +3 V
+5 V
+5 V
+3 V
+5 V
+3 V
+5 V
+3 V
+5 V
+3 V
+5 V
AD813A
Min Typ Max
Units
35 50
25 40
12 20
8 15
100
50
MHz
MHz
MHz
MHz
V/µs
V/µs
3.5 nV√Hz
1.5 pA√Hz
18 pA√Hz
0.05 %
0.2 %
0.05 Degrees
0.2 Degrees
1.5 5
10
7
7 30
40
0.5 1.7
2.5
65 70
69
180 300
225
mV
mV
µV/°C
µA
µA
µA
µA
dB
dB
kΩ
kΩ
15 MΩ
90 Ω
2 pF
1.0 4.0 V
1.0 2.0 V
54 58
dB
3 6.5 µA/V
0.1 0.2
µA/V
56 dB
3.5 µA/V
0.1 µA/V
3.0 3.2
1.0 1.3
20 30
15 25
40
± V p-p
± V p-p
mA
mA
mA
–4– REV. B
5 Page 
AD813
1000
900
800
700
600
500
400
300
200
VS = ؎15V
RL = 500⍀
G = +10
G = –1
G = +2
100 G = +1
0
0 1 23
4 5 6 7 8 9 10
OUTPUT STEP SIZE – V p-p
Figure 22. Slew Rate vs. Output Step Size
2V
100
90
50ns
VIN
700
600
500 G = +10
400 G = –1
300
200 G = +2
100
G = +1
0
0 1.5 3.0 4.5 6.0 7.5 9.0 10.5 12.0 13.5 15.0
SUPPLY VOLTAGE – ؎Volts
Figure 25. Maximum Slew Rate vs. Supply Voltage
1 00
VIN 90
5 00 m V
20ns
10
0%
2V
VOUT
Figure 23. Large Signal Pulse Response, Gain = +1,
(RF = 750 Ω, RL = 150 Ω, VS = ±5 V)
10
VOUT 0 %
5 0 0m V
Figure 26. Small Signal Pulse Response, Gain = +1,
(RF = 750 Ω, RL = 150 Ω, VS = ±5 V)
PHASE
+1
0
–1
–2
–3
–4
–5
–6
1
GAIN
3V
5V
3V
5V
VS = ؎15V
؎5V
VS = ؎15V
+90
0
–90
–180
–270
؎5V
10 100
FREQUENCY – MHz
1000
Figure 24. Closed-Loop Gain and Phase vs. Frequency,
G = +1
RL = 150⍀
140
120
100
80 RF = 750⍀
60
RF = 1k⍀
40
RF = 866⍀
2 4 6 8 10 12 14 16
SUPPLY VOLTAGE – ؎Volts
Figure 27. –3 dB Bandwidth vs. Supply Voltage, G = +1
–10–
REV. B
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet AD813.PDF ] | |
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