AD844AN Analog Devices Inc, AD844AN Datasheet - Page 18

• Manufacturer Part Number: AD844AN
• Description: IC OPAMP CF 60MHZ 80MA 8DIP
• Manufacturer: Analog Devices Inc

Specifications of AD844AN

• Slew Rate: 2000 V/µs
• Rohs Status: RoHS non-compliant
• Amplifier Type: Current Feedback
• Number Of Circuits: 1
• -3db Bandwidth: 60MHz
• Current - Input Bias: 200pA
• Voltage - Input Offset: 50µV
• Current - Supply: 6.5mA
• Current - Output / Channel: 80mA
• Voltage - Supply, Single/dual (±): ±4.5 V ~ 18 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• No. Of Amplifiers: 1
• Bandwidth: 60MHz
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Settling Time: 100ns
• Operating Temperature Max: 85°C
• Output Type: -
• Gain Bandwidth Product: -
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

AD844
Figure 45 shows the small signal response for a 50 dB gain control
range (V
feedthrough on the PC board becomes troublesome and very
careful layout techniques are needed to minimize this problem.
A ground strip between the pins of the
regard. Figure 46 shows the response to a 2 V pulse on V
V
was used and the supplies were ±9 V. The multiplier operates
from supplies between ±4.5 V and ±16.5 V.
Disconnecting Pin 9 and Pin 16 on the AD539 alters the
denominator in Equation 1 to 1 V, and the bandwidth is
approximately 10 MHz, with a maximum gain of 10 dB.
Using only Pin 9 or Pin 16 results in a denominator of 0.5 V,
a bandwidth of 5 MHz, and a maximum gain of 16 dB.
X
= 1 V, 2 V, and 3 V. For these results, a load resistor of 500 Ω
X
= 10 mV to 3.16 V). At small values of V
AD539
is helpful in this
X
, capacitive
Y
for
Rev. F | Page 18 of 20
–16
–26
–36
–46
–56
–6
Figure 46. VGA Transient Response with V
100
90
4
10
100k
0
V
V
V
V
V
X
X
X
X
X
1V
= 3.15V
= 1.0V
= 0.316V
= 0.032V
= 0.10V
1V
Figure 45. VGA AC Response
1M
FREQUENCY (Hz)
X
50ns
10M
= 1 V, 2 V, and 3 V
60M