Datasheet ADA4505-1, ADA4505-2, ADA4505-4 (Analog Devices)

10 μA, Rail-to-Rail I/O, Zero Input Crossover Distortion Amplifiers ADA4505-1/ADA4505-2/ADA4505-4 FEATURES PIN CONFIGURATIONS PSRR: 100 dB minimum CMRR: 105 dB typical OUT 1 5 V+ ADA4505-1 OUT A 1 8 V+ Very low supply current: 10 μA per amplifier maximum V– 2 TOP VIEW –IN A 2 ADA4505-2 7 OUT B 1.8 V to 5 V single-supply or ±0.9 V to ±2.5 V dual-supply operation (Not to Scale) TOP VIEW +IN A 6 –IN B +IN
1
3 3 4 –IN
04
(Not to Scale)
00 0
Rail-to-rail input and output
6- 6-
V– 4 5 +IN B
41 741 07 0
3 mV offset voltage maximum
Figure 1. 5-Lead SOT-23 (RJ-5) Figure 2. 8-Lead MSOP (RM-8)
Very low input bias current: 0.5 pA typical BALL A1 APPLICATIONS INDICATOR BALL A1 CORNER Pressure and position sensors OUT V+ Remote security A1 A2 OUT B V+ OUT A Medical monitors V– NC A1 A2 A3 Battery-powered consumer equipment B1 B2 –IN B –IN A Hazard detectors +IN –IN B1 B3 C1 C2 GENERAL DESCRIPTION +IN B V– +IN A C1 C2 C3
The ADA4505-1/ADA4505-2/ADA4505-4 are single, dual, and
ADA4505-1
quad micropower amplifiers featuring rail-to-rail input and output
TOP VIEW
8
(BALL SIDE DOWN)
3
ADA4505-2
06 swings while operating from a single 1.8 V to 5 V power supply
Not to Scale
6- -00
TOP VIEW
41
NC = NO CONNECT
16
(BALL SIDE DOWN)
07 74 or from dual ±0.9 V to ±2.5 V power supplies. 0 Employing a new circuit technology, these low cost amplifiers Figure 3. 6-Ball WLCSP (CB-6-7) Figure 4. 8-Ball WLCSP (CB-8-2) offer zero input crossover distortion (excellent PSRR and CMRR
BALL A1 INDICATOR
performance) and very low bias current, while operating with a
OUT D OUT A –IN A
supply current of less than 10 μA per amplifier.
A1 A2 A3
This combination of features makes the ADA4505-x amplifiers
–IN D V– +IN A B1 B2 B3
ideal choices for battery-powered applications because they
+IN D +IN B
minimize errors due to power supply voltage variations over the
OUT A 1 14 OUT D C1 C3
lifetime of the battery and maintain high CMRR even for a rail-
–IN A 2 13 –IN D +IN C V+ –IN B ADA4505-4
to-rail op amp.
+IN A 3 12 +IN D D1 D2 D3 TOP VIEW V+ 4 11 V– –IN C OUT C OUT B
Remote battery-powered sensors, handheld instrumentation
(Not to Scale) E1 E2 E3 +IN B 5 10 +IN C
and consumer equipment, hazard detectors (for example, smoke,
–IN B 6 9 –IN C ADA4505-4
fire, and gas), and patient monitors can benefit from the features 5
TOP VIEW
61 00
OUT B 7 8 OUT C
0 6- of the ADA4505-x amplifiers. 6-
(BALL SIDE DOWN)
41
Not to Scale
41 07 07 The ADA4505-x family is specified for both the industrial Figure 5. 14-Lead TSSOP (RU-14) Figure 6. 14-Ball WLCSP (CB-14-1) temperature range (−40°C to +85°C) and the extended industrial temperature range (−40°C to +125°C). The ADA4505-1 single amplifier is available in a tiny 5-lead SOT-23 and a 6-ball WLCSP. The ADA4505-2 dual amplifier is available in a standard 8-lead MSOP and a 8-ball WLCSP. The ADA4505-4 quad amplifier is available in a 14-lead TSSOP and a 14-ball WLCSP. The ADA4505-x family is a member of a growing series of zero crossover op amps offered by Analog Devices, Inc., including the AD8505/AD8506/AD8508, which also operate from a single 1.8 V to 5 V power supply or from dual ±0.9 V to ±2.5 V power supplies.
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PIN CONFIGURATIONS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ELECTRICAL CHARACTERISTICS—1.8 V OPERATION ELECTRICAL CHARACTERISTICS—5 V OPERATION ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION APPLICATIONS INFORMATION PULSE OXIMETER CURRENT SOURCE FOUR-POLE, LOW-PASS BUTTERWORTH FILTER FOR GLUCOSE MONITOR OUTLINE DIMENSIONS ORDERING GUIDE NOTES NOTES NOTES