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PDF S-89431A Data sheet ( Hoja de datos )

Número de pieza S-89431A
Descripción MINI ANALOG SERIES 0.5 uA Rail-to-Rail CMOS OPERATIONAL AMPLIFIER
Fabricantes Seiko Instruments 
Logotipo Seiko Instruments Logotipo



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Rev.5.1_00
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MINI ANALOG SERIES
0.5 μA Rail-to-Rail CMOS OPERATIONAL AMPLIFIER
S-89430A/89431A
The mini-analog series is a group of ICs that incorporate a
general purpose analog circuit in a small package.
The S-89430A/89431A is a CMOS type operational
amplifier that feature Rail-to-Rail*1 I/O and an internal phase
compensation circuit, and that can be driven at a lower
voltage with lower current consumption than existing bipolar
operational amplifiers. These features make this product
the ideal solution for small battery-powered portable
equipment.
These features enable driving at a lower voltage (from 0.9
V) and with lower current consumption (0.5 μA)
The S-89430A/89431A is a single operational amplifier.
*1. Rail-to-Rail is a registered trademark of Motorola Inc.
„ Features
y Lower operating voltage than the conventional general-purpose operational amplifiers:
y Low current consumption:
y Wide I/O voltage range:
VDD = 0.9 to 5.5 V
IDD = 0.5 μA
VCMR = VSS to VDD
( Rail-to-Rail )
y Low input offset voltage:
10.0 mV (max.) (S-89430A)
5.0 mV (max.) (S-89431A)
y No external capaciters required for internal phase compensation
y Lead-free products
„ Application
y Cellular phones
y PDAs
y Notebook PCs
y Digital cameras
y Digital video cameras
„ Package
Package Name
SC-88A
SOT-23-5
Package
NP005-B
MP005-A
Drawing Code
Tape
NP005-B
MP005-A
Reel
NP005-B
MP005-A
Seiko Instruments Inc.
1

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S-89431A pdf
MINI ANALOG SERIES 0.5 μA Rail-to-Rail CMOS OPERATIOwNwAwL.DaAtaMShPeeLtI4FU.IcEoRm
Rev.5.1_00
S-89430A/89431A
„ Electrical Characteristics
1. VDD = 3.0 V
Table 5
DC Characteristics (VDD = 3.0 V)
Parameter
Symbol Measurement Conditions
Current consumption*1
Input offset voltage
Input offset current
Input bias current
Common-mode input
voltage range
IDD
VIO
IIO
IBIAS
VCMR
VCMR = VOUT = 1.5 V
S-89430A : VCMR = 1.5 V
S-89431A : VCMR = 1.5 V
(Ta = 25°C unless otherwise specified)
Min.
Typ.
Max.
Unit
Measurement
Circuit
0.5 0.9 μA Figure 12
10 ±5 +10 mV
5 ±3 +5
Figure 8
1 pA
1 pA
03 V
Figure 9
Voltage gain
(open loop)
AVOL
VSS + 0.1 V VOUT VDD 0.1 V,
VCMR = 1.5 V, RL = 1 MΩ
70
80
dB
Maximum output
swing voltage
VOH RL = 100 KΩ
VOL RL = 100 KΩ
2.95
⎯⎯
0.05
V
Common-mode input
signal rejection ratio
CMRR
VSS VCMR VDD
45 65 dB
Figure 16
Figure 10
Figure 11
Figure 9
Power supply voltage
rejection ratio
PSRR VDD = 0.9 to 5.5 V
70 80 dB Figure 7
Source current
Sink current
ISOURCE
ISINK
VOUT = VDD0.1 V
VOUT = 0 V
VOUT = 0.1 V
VOUT = VDD
400 500
4800 6000
400 550
4800 6000
μA
μA
Figure 13
Figure 14
*1 When the output is saturated on the VDD side, a current consumption of up to 3 to 5 μA may flow.
(Refer to 4. Current consumption vs. Common-mode input voltage characteristics graphs in the
characteristics data. )
AC Characteristics (VDD = 3.0 V)
Parameter
Symbol
Slew rate
SR
Gain-bandwidth product
Maximum load capacitance
GBP
CL
Table 6
(Ta = 25°C unless otherwise specified)
Measurement Conditions Min. Typ. Max. Unit
RL = 1.0 MΩ, CL = 15 pF
(Refer to Figure 15.)
5
V/ms
CL = 0 pF
4.8 kHz
47 pF
Seiko Instruments Inc.
5

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S-89431A arduino
MINI ANALOG SERIES 0.5 µA Rail-to-Rail CMOS OPERATIOwNwAwL.DaAtaMShPeeLtI4FU.IcEoRm
Rev.5.1_00
S-89430A/89431A
8. Slew rate (SR):
Measured by the voltage follower circuit
IN (+) = VDD
IN (+) = 0 V
VOUT
VOUT
tR = tF = 1 µs (0 V VDD)
tTHL
tTLH
VOH
VOL
When falling
SR
=
VOH VOL
tTHL
When rising
SR
=
VOH VOL
tTLH
Figure 15
When VDD=3.0 V When VDD=1.8 V When VDD=0.9 V
VOH 2.7 V
1.62 V
0.81 V
VOL 0.3 V
0.18 V
0.09 V
9. Voltage gain (open loop)
VDD
RF
RS
D.U.T
+
RS
RF
1 M
VCMR=VDD / 2
VDD / 2
VDDN
+
NULL
VSSN
VM
VOUT
Figure 16
y Voltage gain (open loop) (AVOL)
The voltage gain (AVOL) can be calculated by the following formula, with the value of VOUT
measured at each VM.
Measurement conditions:
When VM = VDD 0.1 V: VM = VM1, VOUT = VOUT1
When VM = 0.1 V: VM = VM2, VOUT = VOUT2
AVOL = 20log  VM1 VM2 × RF + RS 
VOUT1 VOUT2
RS
Seiko Instruments Inc.
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