AD847JR Analog Devices Inc, AD847JR Datasheet - Page 11

• Manufacturer Part Number: AD847JR
• Description: IC OPAMP GP 50MHZ LP 32MA 8SOIC
• Manufacturer: Analog Devices Inc

Specifications of AD847JR

• Slew Rate: 300 V/µs
• Mounting Type: Surface Mount
• Rohs Status: RoHS non-compliant
• Amplifier Type: General Purpose
• Number Of Circuits: 1
• Gain Bandwidth Product: 50MHz
• Current - Input Bias: 3.3µA
• Voltage - Input Offset: 500µV
• Current - Supply: 5.3mA
• Current - Output / Channel: 32mA
• Voltage - Supply, Single/dual (±): ±4.5 V ~ 18 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 8-SOIC (3.9mm Width)
• No. Of Amplifiers: 1
• Bandwidth: 50MHz
• No. Of Pins: 8
• Operating Temperature Range: 0°C To +70°C
• Settling Time: 120ns
• Operating Temperature Max: 70°C
• Output Type: -
• -3db Bandwidth: -
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

REV. F
A High Speed, Three Op-Amp In-Amp
The circuit of Figure 26 lends itself well to CCD imaging and
other video speed applications. It uses two high speed CB pro-
cess op-amps: Amplifier A3, the output amplifier, is an AD847.
+V
–V
IN
IN
BANDWIDTH, SETTLING TIME AND TOTAL HARMONIC DISTORTION VS. GAIN
R
G
3
2
6
5
Figure 26. A High Speed In-Amp Circuit for Data Acquisition
A1
A2
COMM
AD827
GAIN R
1
2
10
100
AD827
1k
1k
+15V
–15V
1/2
1/2
7
1
OPEN
2k
226
20
G
5pF
2k
2k
10 F
10 F
C
(pF)
2–8
2–8
2–8
2–8
ADJ
SMALL
SIGNAL
BANDWIDTH
16.1MHz
14.7MHz
4.5MHz
660kHz
0.1 F
0.1 F
1.87k
DC CMR
ADJUST
200
AC CMR ADJUST
SETTLING TIME
2
3
2–8pF
A3
2k
+V
–V
AD847
–11–
S
S
6
CIRCUIT GAIN =
The input amplifier (A1 and A2) is an AD827, which is a dual
version of the AD847. This circuit has the optional flexibility of
both dc and ac trims for common-mode rejection, plus the abil-
ity to adjust for minimum settling time.
AMPLIFIER
SETTLING
TIME
TO 0.1%
200ns
200ns
370ns
2.5 s
V
1 F
EACH
1 F
OUT
0.1 F
0.1 F
R
2k
2000
L
THD + NOISE
BELOW INPUT
LEVEL
@ 10kHz
82dB
82dB
81dB
71dB
R
G
PIN 4
AD847 & AD827
PIN 7 AD847,
PIN 8 AD827
+ 1
INPUT
FREQUENCY
100Hz
1kHz
10kHz
100kHz
1MHz
CMRR
88.3dB
87.4dB
86.2dB
67.4dB
47.1dB
AD847