Datasheet AD8646, AD8647, AD8648 (Analog Devices)

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24 MHz Rail-to-Rail Amplifiers with Shutdown Option Data Sheet AD8646/ AD8647 /AD8648 FEATURES PIN CONFIGURATIONS Offset voltage: 2.5 mV maximum OUTA 1 8 V+ Single-supply operation: 2.7 V to 5.5 V –INA 2 AD8646 7 OUTB Low noise: 8 nV/√Hz +INA 3 TOP VIEW 6 –INB (Not to Scale)
1 -00
Wide bandwidth: 24 MHz V– 4 5 +INB
527 06
Slew rate: 11 V/μs
Figure 1. 8-Lead SOIC and MSOP
Short-circuit output current: 120 mA Qualified for automotive applications OUTA 1 10 V+ –INA 2 9 OUTB No phase reversal AD8647 +INA 3 8 –INB TOP VIEW Low input bias current: 1 pA V– 4 (Not to Scale) 7 +INB
2
Low supply current per amplifier: 2 mA maximum
00 7-
SDA 5 6 SDB
52
Unity gain stable
06 Figure 2. 10-Lead MSOP
APPLICATIONS OUTA 1 14 OUTD Battery-powered instruments –INA 2 13 –IND Multipole filters +INA 3 AD A 864 D 8 864 12 +IND ADC front ends TOP TO VI V E I W E V+ 4 11 V– Sensors (Not (N to t Sc S a c le) e +INB 5 10 +INC Barcode scanners –INB 6 9 –INC ASIC input or output amplifiers
3
OUTB 7 8 OUTC
00 7-
Audio amplifiers
52 06
Photodiode amplifiers
Figure 3. 14-Lead SOIC and TSSOP
Datapath/mux/switch control GENERAL DESCRIPTION
The AD8646 and the AD8647 are the dual, and the AD8648 is AD8647/AD8648 offer high output drive capability, which is the quad, rail-to-rail, input and output, single-supply amplifiers excellent for audio line drivers and other low impedance featuring low offset voltage, wide signal bandwidth, low input applications. The AD8646 and AD8648 are available for voltage, and low current noise. The AD8647 also has a low automotive applications (see the Ordering Guide). power shutdown function. Applications include portable and low powered instrumenta- The combination of 24 MHz bandwidth, low offset, low noise, tion, audio amplification for portable devices, portable phone and very low input bias current makes these amplifiers useful in headsets, barcode scanners, and multipole filters. The ability to a wide variety of applications. Filters, integrators, photodiode swing rail to rail at both the input and output enables designers amplifiers, and high impedance sensors all benefit from the to buffer CMOS ADCs, DACs, ASICs, and other wide output combination of performance features. AC applications benefit swing devices in single-supply systems. from the wide bandwidth and low distortion. The AD8646/
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Document Outline FEATURES APPLICATIONS PIN CONFIGURATIONS GENERAL DESCRIPTION REVISION HISTORY Revision History: AD8646/AD8647/AD8648 Revision History: AD8646 Revision History: AD8648 SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION POWER-DOWN OPERATION MULTIPLEXING OPERATION OUTLINE DIMENSIONS ORDERING GUIDE