User Manual

APX321/APX358/APX324
LOW VOLTAGE, RAIL-TO-RAIL INPUT AND OUTPUT
SINGLE/DUAL/QUAD OPERATIONAL AMPLIFIERS
APX321/APX358/APX324 Rev. 13 4 of 18 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Electrical Characteristics
2.7V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
A
= 25°C, V
+
= 2.7V, V
-
= 0V, V
CM
= 1.0V, V
O
= V
+
/2 and R
L
> 1 MΩ.
Symbol Parameter Test Conditions
Min
(Note 10)
Typ.
(Note 9)
Max
(Note 10)
Unit
V
OS
Input Offset Voltage 1.7 7 mV
TCV
OS
Input Offset Voltage
Average Drift
5 µV/°C
I
B
Input Bias Current 10 nA
I
OS
Input Offset Current 5 50 nA
CMRR
Common Mode Rejection
Ratio
0V ≤ V
CM
≤ 2.4V
50 63 dB
PSRR
Power Supply Rejection
Ratio
2.7V ≤ V
+
≤ 5V
V
O
= 1V
50 60 dB
V
CMR
Input Common-Mode
Voltage Range
For CMRR ≥ 50dB
0 -0.2
V
2.5
V
O
Output Swing R
L
= 10 kΩ to 1.35V
V
+
- 100 V
+
- 20
mV
20 100
I
S
Supply Current
APX321
Single amplifier
110 140 µA
APX358
Both amplifiers
190 340 µA
APX324
All four amplifiers
340 680 µA
2.7V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
A
= 25°C, V
+
= 2.7V, V
-
= 0V, V
CM
= 1.0V, V
O
= V
+
/2 and R
L
> 1 MΩ.
Symbol Parameter Test Conditions
Min
(Note 10)
Typ.
(Note 9)
Max
(Note 10)
Unit
GBWP Gain-Bandwidth Product C
L
= 200 pF 1 MHz
Φm
Phase Margin 60 Deg
Gm Gain Margin 10 dB
e
n
Input-Referred Voltage
Noise
f > 50 KHz 23
Z
H
nV