參數(shù)資料
型號: AD8620BR-REEL7
廠商: ANALOG DEVICES INC
元件分類: 運動控制電子
英文描述: Toggle Switch; Circuitry:SPDT; Switch Operation:On-Off-On; Contact Current Max:6A; Actuator Style:Bat; Switch Terminals:Through Hole; Current Rating:3A; Leaded Process Compatible:Yes; Mounting Type:PCB; Features:Short Actuator RoHS Compliant: Yes
中文描述: DUAL OP-AMP, 300 uV OFFSET-MAX, 25 MHz BAND WIDTH, PDSO8
封裝: MS-012AA, SOIC-8
文件頁數(shù): 16/20頁
文件大?。?/td> 414K
代理商: AD8620BR-REEL7
REV. D
–16–
AD8610/AD8620
High Speed, Low Noise Differential Driver
The AD8620 is a perfect candidate as a low noise differential
driver for many popular ADCs. There are also other applications,
such as balanced lines, that require differential drivers. The circuit
of Figure 30 is a unique line driver widely used in industrial applica-
tions. With
±
13 V supplies, the line driver can deliver a differential
signal of 23 V p-p into a 1 k
load. The high slew rate and wide
bandwidth of the AD8620 combine to yield a full power bandwidth
of 145 kHz while the low noise front end produces a referred-to-
input noise voltage spectral density of 6 nV/
Hz
. The design is a
transformerless, balanced transmission system where output
common-mode rejection of noise is of paramount importance.
Like the transformer-based design, either output can be shorted
to ground for unbalanced line driver applications without changing
the circuit gain of 1. This allows the design to be easily set to
noninverting, inverting, or differential operation.
3
2
V–
1/2 OF AD8620
3
2
V–
V+
5
6
1k
R8
V+
R10
50
R1
1k
1k
R9
1k
R4
1k
R3
AD8610
1/2 OF AD8620
R2
1k
6
7
U3
U2
R13
1k
R5
1k
R6
10k
R7
1k
R12
1k
R11
50
V
O
2
V
O
1
V–
V+
0
1
V
O
2 – V
O
1 = V
IN
0
Figure 30. Differential Driver
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