ADA4505-2ARMZ Datasheet, PDF (1/24 Pages) Analog Devices – 10 UA, Rail-to-Rail I/O, Zero InputCrossover Distortion Amplifiers

10 μA, Rail-to-Rail I/O, Zero Input
Crossover Distortion Amplifiers
ADA4505-1/ADA4505-2/ADA4505-4
FEATURES
PSRR: 100 dB minimum
CMRR: 105 dB typical
Very low supply current: 10 μA per amplifier maximum
1.8 V to 5 V single-supply or ±0.9 V to ±2.5 V dual-supply operation
Rail-to-rail input and output
3 mV offset voltage maximum
Very low input bias current: 0.5 pA typical
APPLICATIONS
Pressure and position sensors
Remote security
Medical monitors
Battery-powered consumer equipment
Hazard detectors
GENERAL DESCRIPTION
The ADA4505-1/ADA4505-2/ADA4505-4 are single, dual, and
quad micropower amplifiers featuring rail-to-rail input and output
swings while operating from a single 1.8 V to 5 V power supply
or from dual ±0.9 V to ±2.5 V power supplies.
Employing a new circuit technology, these low cost amplifiers
offer zero input crossover distortion (excellent PSRR and CMRR
performance) and very low bias current, while operating with a
supply current of less than 10 μA per amplifier.
This combination of features makes the ADA4505-x amplifiers
ideal choices for battery-powered applications because they
minimize errors due to power supply voltage variations over the
lifetime of the battery and maintain high CMRR even for a rail-
to-rail op amp.
Remote battery-powered sensors, handheld instrumentation
and consumer equipment, hazard detectors (for example, smoke,
fire, and gas), and patient monitors can benefit from the features
of the ADA4505-x amplifiers.
The ADA4505-x family is specified for both the industrial
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.
Rev. D
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rights of third parties that may result from its use. Specifications subject to change without notice. No
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PIN CONFIGURATIONS
OUT 1
V– 2
+IN 3
ADA4505-1
TOP VIEW
(Not to Scale)
5 V+
4 –IN
Figure 1. 5-Lead SOT-23 (RJ-5)
BALL A1
INDICATOR
OUT V+
A1 A2
V– NC
B1 B2
+IN –IN
C1 C2
ADA4505-1
TOP VIEW
(BALL SIDE DOWN)
Not to Scale
NC = NO CONNECT
Figure 3. 6-Ball WLCSP (CB-6-7)
OUT A 1
14 OUT D
–IN A 2
13 –IN D
ADA4505-4
+IN A 3
12 +IN D
TOP VIEW
V+ 4 _{(Not to Scale)} 11 V–
+IN B 5
10 +IN C
–IN B 6
9 –IN C
OUT B 7
8 OUT C
Figure 5. 14-Lead TSSOP (RU-14)
OUT A 1
–IN A 2
+IN A 3
V– 4
ADA4505-2
TOP VIEW
(Not to Scale)
8 V+
7 OUT B
6 –IN B
5 +IN B
Figure 2. 8-Lead MSOP (RM-8)
BALL A1
CORNER
OUT B V+ OUT A
A1 A2 A3
–IN B
B1
–IN A
B3
+IN B V– +IN A
C1 C2 C3
ADA4505-2
TOP VIEW
(BALL SIDE DOWN)
Figure 4. 8-Ball WLCSP (CB-8-2)
BALL A1
INDICATOR
OUT D OUT A –IN A
A1
A2
A3
–IN D
V–
+IN A
B1
B2
B3
+IN D
C1
+IN B
C3
+IN C
V+
–IN B
D1
D2
D3
–IN C
E1
OUT C OUT B
E2
E3
ADA4505-4
TOP VIEW
(BALL SIDE DOWN)
Not to Scale
Figure 6. 14-Ball WLCSP (CB-14-1)
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