DRV134 Datasheet, PDF (13/30 Pages) Burr-Brown (TI) – AUDIO BALANCED LINE DRIVERS

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Feature Description (continued)
+18V
DRV134, DRV135
SBOS094B – JANUARY 1998 – REVISED DECEMBER 2014
1µF
V_IN = 10Vp-p
4
Gnd
3
6
+V_O
7
8
DRV134
1
2
5
–V_O
300Ω⁽¹⁾
300Ω⁽¹⁾
1µF
V_OUT
600Ω
–18V
Figure 26. Signal Balance Ratio Test Circuit
8.4 Device Functional Modes
8.4.1 Differential-Output Mode
In differential-output mode, the DRV134 (and DRV135 in SO-8 package) converts a single-ended, ground-
referenced input to a floating differential output with +6 dB gain (G = 2). Figure 27 shows the basic connections
required for operation in differential-output mode.
Normally, +V_O is connected to +Sense, –V_O is connected to –Sense, and the outputs are taken from these
junctions as shown in Figure 27.
V–
1µF
V+
1µF
5 (11)
DRV134
DRV135
4
V_IN
(6)
Gnd
3
A1
(5)
6 (12)
50Ω ₈
A2
+V_O
(14)
10kΩ
7
(13) +Sense
G = +6dB
2 –Sense
(4)
50Ω ₁
A3
–V_O
(3)
All resistors 30kΩ unless otherwise indicated.
10kΩ
Figure 27. Basic Connections for Differential-Output Mode
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