OPA1652_15 Datasheet, PDF (11/29 Pages) Texas Instruments – Low Noise and Distortion, General-Purpose, FET-Input AUDIO OPERATIONAL AMPLIFIERS

OPA1652
OPA1654
www.ti.com
SBOS477 – DECEMBER 2011
APPLICATION INFORMATION
The OPA1652 and OPA1654 are unity-gain stable,
precision dual and quad op amps with very low noise.
Applications with noisy or high-impedance power
supplies require decoupling capacitors close to the
device pins. In most cases, 0.1-μF capacitors are
adequate. Figure 35 shows a simplified schematic of
the OPA165x (one channel shown).
OPERATING VOLTAGE
The OPA165x series op amps operate from ±2.25 V
to ±18 V supplies while maintaining excellent
performance. The OPA165x series can operate with
as little as +4.5V between the supplies and with up to
+36 V between the supplies. However, some
applications do not require equal positive and
negative output voltage swing. With the OPA165x
series, power-supply voltages do not need to be
equal. For example, the positive supply could be set
to +25 V with the negative supply at –5 V.
In all cases, the common-mode voltage must be
maintained within the specified range. In addition, key
parameters are assured over the specified
temperature range of T_A = –40°C to +85°C.
Parameters that vary significantly with operating
voltage or temperature are shown in the Typical
Characteristics.
V+
V_IN+
V_IN-
Tail
Current
V_BIAS1
Class AB
Control
V_O
Circuitry
V_BIAS2
V-
Figure 35. OPA165x Simplified Schematic
Copyright © 2011, Texas Instruments Incorporated
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Product Folder Link(s): OPA1652 OPA1654