Datasheet


SGLS318 − NOVEMBER 2005
4
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ELECTRICAL CHARACTERISTICS
V
CC
= 18 V, R
T
= 8.2 kΩ, C
T
= 1.5 nF, V
PKLMT
= 1 V, V
VRMS
= 1.5 V, I
IAC
= 100 µA, I
ISENSE
= 0 V, V
CAO
= 3.5 V, V
VAO
= 5 V, V
VSENSE
= 3 V
PARAMETER
TEST CONDITIONS MIN TYP MAX UNIT
OVERALL
Supply current, off
CAO = 0 V, VAO = 0 V,
V
CC
= V
UVLO
−0.3 V
250 400 µA
Supply current, on 12 18 mA
V
CC
turn-on threshold voltage 8 10.5 11.2
V
CC
turn-off threshold voltage 9 10 12
V
V
CC
clamp I
VCC
= I
VCC(on)
+ 5 mA 18 20 22
V
VOLTAGE AMPLIFIER
Input voltage 2.9 3 3.1 V
V
SENSE
bias current −500 −25 500 nA
Open loop gain 2 V ≤ V
OUT
≤ 5 V 70 100 dB
V
OH
High-level output voltage I
LOAD
= −500
µ
A 6 V
V
OL
Low-level output voltage I
LOAD
= 500
µ
A 0.3 0.5 V
I
SC
Output short-circuit current V
OUT
= 0 V 1.5 3.5 mA
Gain bandwidth product
(1)
f
IN
= 100 kHz, 10 mV
P−P
1 MHz
CURRENT AMPLIFIER
Input offset voltage
V
CM
= 0 V, T
A
= 25°C −4 0
mV
Input offset voltage
V
CM
= 0 V, overtemperature
−5.5 0
mV
Input bias current, I
SENSE
V
CM
= 0 V −500 500 nA
Open loop gain 2 V ≤ V
OUT
≤ 6 V 80 110 dB
V
OH
High-level output voltage I
LOAD
= −500
µ
A 8
V
V
OL
Low-level output voltage I
LOAD
= 500
µ
A 0.3 0.5
V
I
SC
Output short-circuit current V
OUT
= 0 V 1.5 3.5 mA
CMRR Common mode rejection range −0.3 5 V
Gain bandwidth product
(1)
f
IN
= 100 kHz, 10 mV
P−P
3 5 MHz
REFERENCE
Output voltage
I
REF
= 0 mA, T
A
= 25°C 7.4 7.5 7.6
V
Output voltage
I
REF
= 0 mA
7.35 7.5 7.65
V
Load regulation 1 mA ≤ I
REF
≤ 10 mA 0 8 20
mV
Line regulation 12 V ≤ V
CC
≤ 18 V 0 14 25
mV
I
SC
Short circuit current V
REF
= 0 V 25 35 60 mA
(1)
Ensured by design. Not production tested.
(2)
Gain constant. (K) +
I
IAC
ǒ
V
VAO
* 1.5 V
Nj
ƪ
ǒ
V
VRMS
Ǔ
2
I
MOUT
ƫ