AD8397 Analog Devices Data Handbook & Specifications

Rail-to-Rail, High Output Current Amplifier

AD8397 FEATURES PIN CONFIGURATION Dual operational amplifier OUT1 +VS

Voltage feedback –IN1 OUT2 +IN1 –IN2

Wide supply range from 3 V to 24 V

–VS +IN2

Rail-to-rail output Output swing to within 0.5 V of supply rails Figure 1. 8-Lead SOIC High linear output current

310 m A peak into 32 Ω on ±12 V supplies while maintaining 1.50 −80 d Bc SFDR 1.25 Low noise 1.00 4.5 n V/√Hz voltage noise density at 100 k Hz 0.75 1.5 p A/√Hz current noise density at 100 k Hz 0.50 High speed 0.25

69 MHz bandwidth (G = 1, −3 d B)

53 V/μs slew rate (RLOAD = 25 Ω) –0.25 –0.50 –0.75

APPLICATIONS

Twisted-pair line drivers –1.25 Audio applications –1.50 General-purpose ac applications

TIME (µs)

Figure 2. Output Swing, VS = ±1.5 V, RL = 25 Ω

GENERAL DESCRIPTION The AD8397 comprises two voltage feedback operational amplifiers capable of driving heavy loads with excellent linearity. The common-emitter, rail-to-rail output stage surpasses the output voltage capability of typical emitter-follower output stages and can swing to within 0.5 V of either rail while driving a 25 Ω load. The low distortion, high output current, and wide output dynamic range make the AD8397 ideal for applications that

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

high bandwidth and fast slew rate of the AD8397 keep distortion to

a minimum. The AD8397 is available in a standard 8-lead SOIC_N –12 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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