參數(shù)資料
型號(hào): LT1787CMS8
廠商: LINEAR TECHNOLOGY CORP
元件分類: 模擬信號(hào)調(diào)理
英文描述: Precision, High Side Current Sense Amplifiers
中文描述: SPECIALTY ANALOG CIRCUIT, PDSO8
封裝: PLASTIC, MSOP-8
文件頁(yè)數(shù): 3/12頁(yè)
文件大小: 205K
代理商: LT1787CMS8
3
LT1787/LT1787HV
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
ESD (Electrostatic Discharge) sensitive devices. Extensive use of
ESD protection devices are used internal to the LT1787/LT1787HV,
however, high electrostatic discharge can damage or degrade the device.
Use proper ESD handling precautions.
Note 3:
The LT1787C/LT1787HVC are guaranteed to meet specified
performance from 0
°
C to 70
°
and are designed, characterized and
ELECTRICAL CHARACTERISTICS
The
G
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25
°
C.
Total supply = (V
S–
– V
EE
) = 2.5V to 36V (LT1787), 2.5V to 60V (LT1787HV) unless otherwise specified.
SYMBOL
V
OS
TC
I
OUT(O)
V
OUT(O)
PARAMETER
Temperature Coefficient of V
OS
No-Load Output Current Error
No-Load Output Voltage Error
(S8)
CONDITIONS
V
S
Supply = 5V (Note 5)
V
SENSE
= 0V
V
SENSE
= 0V, V
S
Supply = 5V
0
°
C
T
A
70
°
C
–40
°
C
T
A
85
°
C
V
SENSE
= 0V, V
S
Supply = 5V
0
°
C
T
A
70
°
C
–40
°
C
T
A
85
°
C
±
V
SENSE
= 10mV, 50mV, 100mV, 150mV, 250mV,
V
S
Supply = Total Supply + |V
SENSE
|
±
V
SENSE
= 100mV, V
S
Supply = 5V
MIN
TYP
0.5
4
MAX
2
UNITS
μ
V/
°
C
expected to meet these extended temperature limits, but are not tested at
–40
°
C and 85
°
C. The LT1787I/LT1787HVI are guaranteed to meet the
extended temperature limits.
Note 4:
Testing done at V
BIAS
= 1.25V, V
EE
= 0V unless otherwise
specified.
Note 5:
This parameter is not 100% tested.
nA
μ
V
μ
V
μ
V
μ
V
μ
V
μ
V
–600
–1080
–1600
–1000
–1840
–2000
600
1080
1600
1000
1840
2000
G
G
No-Load Output Voltage Error
(MS8)
G
G
g
m
Tranconductance, I
OUT
/V
SENSE
400
μ
A/V
A
V
Gain, V
OUT
/V
SENSE
Output Voltage Gain Error
V
S
Supply Rejection Ratio
G
7.6
–5
120
120
100
8
2
8.4
5
V/V
%
dB
dB
dB
G
V
S
PSRR
V
SENSE
= 0V, V
S
Supply = 2.5V to 36V (LT1787)
V
SENSE
= 0V, V
S
Supply = 2.5V to 60V (LT1787HV)
G
G
135
135
130
V
EE
PSRR
Negative Supply Rejection Ratio V
SENSE
= 0V, V
S
Supply = 15V, V
BIAS
= 0V,
V
EE
= –1V to –15V (LT1787)
V
SENSE
= 0V, V
S
Supply = 40V, V
BIAS
= 0V,
V
EE
= –1V to –15V (LT1787HV)
Change in Input Offset Voltage
V
SENSE
= 0V, V
S
Supply = 36V, V
BIAS
= 0.5V to 25V (LT1787)
with Change in V
BIAS
Voltage
V
SENSE
= 0V, V
S
Supply = 60V, V
BIAS
= 0.5V to 25V (LT1787HV)
G
Positive Input Sense Current
V
SENSE
= 0V
Negative Input Sense Current
V
SENSE
= 0V
Negative Supply Current
V
SENSE
= 0V
Output Current
V
SENSE
=
±
128mV
Output Voltage
V
SENSE
=
±
128mV, V
S+
3.3V
Ripple Rejection
V
S+
= V
S–
= 20V,
V
S
Supply = 1V, f = 1kHz
Minimum Output Voltage
V
SENSE
= 0V, V
BIAS
= 0V
V
SENSE
= V
S+
– V
S–
= –128mV, V
BIAS
= 0V
Unipolar Output
V
SENSE
= 2mV, V
BIAS
= 0V
Saturation Voltage
V
SENSE
= 4mV, V
BIAS
= 0V
V
SENSE
= 5mV, V
BIAS
= 0V
V
SENSE
= 6mV, V
BIAS
= 0V
Maximum Output Voltage
R
G1A,
R
G2A
Input Gain-Setting Resistor
Pin 1 to Pin 2, Pin 7 to Pin 8
R
OUT
Output Resistor
Pin 5 to Pin 6
G
G
100
130
dB
V
OS
V
BIAS
I
S+(O)
I
S–(O)
I
EE(O)
I
OUT
V
OUT
G
100
100
130
130
10
50
60
±
50
dB
dB
μ
A
μ
A
μ
A
μ
A
V
dB
mV
mV
mV
mV
mV
mV
G
20
100
120
G
G
V
BIAS
±
1.024
88
30
10
32
38
43
49
V
S+
– 0.75
1.25
20
G
80
V
OMIN
G
45
G
G
G
G
50
55
60
65
V
OMAX
V
k
k
(Note 4)
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