Datasheet

LM7321, LM7322
www.ti.com SNOSAW8D –MAY 2008–REVISED MARCH 2013
2.7V Electrical Characteristics
(1)
Unless otherwise specified, all limits ensured for T
A
= 25°C, V
+
= 2.7V, V
−
= 0V, V
CM
= 0.5V, V
OUT
= 1.35V, and R
L
> 1 MΩ to
1.35V. Boldface limits apply at the temperature extremes.
Min Typ Max
Symbol Parameter Condition Units
(2) (3) (2)
−5 +5
V
OS
Input Offset Voltage V
CM
= 0.5V & V
CM
= 2.2V ±0.7 mV
−6 +6
V
CM
= 0.5V & V
CM
= 2.2V
TC V
OS
Input Offset Voltage Temperature Drift ±2 µV/C
(4)
V
CM
= 0.5V −2.0 −1.2
(5)
−2.5
I
B
Input Bias Current µA
V
CM
= 2.2V 0.45 1.0
(5)
1.5
20 200
I
OS
Input Offset Current V
CM
= 0.5V and V
CM
= 2.2V nA
300
70 100
0V ≤ V
CM
≤ 1.0V
60
CMRR Common Mode Rejection Ratio dB
55 70
0V ≤ V
CM
≤ 2.7V
50
78 104
PSRR Power Supply Rejection Ratio 2.7V ≤ V
S
≤ 30V dB
74
−0.3 −0.1
0.0
CMVR Common Mode Voltage Range CMRR > 50 dB V
2.8 3.0
2.7
0.5V ≤ V
O
≤ 2.2V 65 72
R
L
= 10 kΩ to 1.35V 62
A
VOL
Open Loop Voltage Gain dB
0.5V ≤ V
O
≤ 2.2V 59 66
R
L
= 2 kΩ to 1.35V 55
R
L
= 10 kΩ to 1.35V 50 150
V
ID
= 100 mV 160
Output Voltage Swing
High
R
L
= 2 kΩ to 1.35V 100 250
V
ID
= 100 mV 280
mV from
V
OUT
either rail
R
L
= 10 kΩ to 1.35V 20 120
V
ID
= −100 mV 150
Output Voltage Swing
Low
R
L
= 2 kΩ to 1.35V 40 120
V
ID
= −100 mV 150
Sourcing 30 48
V
ID
= 200 mV, V
OUT
= 0V
(6)
20
I
OUT
Output Current mA
Sinking 40 65
V
ID
= −200 mV, V
OUT
= 2.7V
(6)
30
0.95 1.3
LM7321
1.9
I
S
Supply Current mA
2.0 2.5
LM7322
3.8
SR Slew Rate
(7)
A
V
= +1, V
I
= 2V Step 8.5 V/µs
f
u
Unity Gain Frequency R
L
= 2 kΩ, C
L
= 20 pF 7.5 MHz
(1) Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very
limited self-heating of the device such that T
J
= T
A
. No ensured specification of parametric performance is indicated in the electrical
tables under conditions of internal self-heating where T
J
> T
A
.
(2) All limits are ensured by testing or statistical analysis.
(3) Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary
over time and will also depend on the application and configuration. The typical values are not tested and are not ensured on shipped
production material.
(4) Offset voltage temperature drift determined by dividing the change in V
OS
at temperature extremes into the total temperature change.
(5) Positive current corresponds to current flowing into the device.
(6) Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in
exceeding the maximum allowed junction temperature of 150°C. Short circuit test is a momentary test. Output short circuit duration is
infinite for V
S
≤ 6V at room temperature and below. For V
S
> 6V, allowable short circuit duration is 1.5 ms.
(7) Slew rate is the slower of the rising and falling slew rates. Connected as a Voltage Follower.
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