Datasheet AD8397 (Analog Devices)

Rail-to-Rail, High Output Current Amplifier AD8397 FEATURES PIN CONFIGURATION Dual operational amplifier OUT1 1 8 +VS Voltage feedback –IN1 2 7 OUT2 Wide supply range from 3 V to 24 V +IN1 3 6 –IN2
001
Rail-to-rail output –VS 4 5 +IN2
05069-
Output swing to within 0.5 V of supply rails
Figure 1. 8-Lead SOIC
High linear output current 310 mA peak into 32 Ω on ±12 V supplies while maintaining 1.50 −80 dBc SFDR 1.25 Low noise 1.00 4.5 nV/√Hz voltage noise density at 100 kHz 0.75 1.5 pA/√Hz current noise density at 100 kHz 0.50 High speed ) 0.25 69 MHz bandwidth (G = 1, −3 dB) (V T 0 OU 53 V/μs slew rate (RLOAD = 25 Ω) V –0.25 –0.50 –0.75 APPLICATIONS –1.00 Twisted-pair line drivers
1
–1.25
03 9-
Audio applications
06
–1.50
05
General-purpose ac applications 0 2 4 6 8 10 12 14 16 18 20 TIME (µs)
Figure 2. Output Swing, VS = ±1.5 V, RL = 25 Ω
GENERAL DESCRIPTION 12
The AD8397 comprises two voltage feedback operational amplifiers capable of driving heavy loads with excellent linearity. The
9
common-emitter, rail-to-rail output stage surpasses the output
6
voltage capability of typical emitter-follower output stages and can swing to within 0.5 V of either rail while driving a 25 Ω
3
load. The low distortion, high output current, and wide output
(V) T 0
dynamic range make the AD8397 ideal for applications that
OU V
require a large signal swing into a heavy load.
–3
Fabricated with Analog Devices, Inc., high speed extra fast
–6
complementary bipolar high voltage (XFCB-HV) process, the
–9
high bandwidth and fast slew rate of the AD8397 keep distortion to -032 69 a minimum. The AD8397 is available in a standard 8-lead SOIC_N
–12
050
0 2 4 6 8 10 12 14 16 18 20
package and, for higher power dissipating applications, a thermally
TIME (µs)
enhanced 8-lead SOIC_N_EP package. Both packages can operate Figure 3. Output Swing, VS = ±12 V, RL = 100 Ω from −40°C to +85°C.
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PIN CONFIGURATION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS MAXIMUM POWER DISSIPATION ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS APPLICATIONS INFORMATION POWER SUPPLY AND DECOUPLING LAYOUT CONSIDERATIONS UNITY-GAIN OUTPUT SWING CAPACITIVE LOAD DRIVE OUTLINE DIMENSIONS ORDERING GUIDE