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UC2838A Folha de dados(PDF) 3 Page - Texas Instruments

Nome de Peças UC2838A
Descrição Electrónicos  MAGNETIC AMPLIFIER CONTROLLER
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
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UC2838, UC2838A
UC3838, UC3838A
SLUS221A – APRIL 2000 – REVISED MAY 2001
3
www.ti.com
electrical characteristics, TA = –20°C to 85°C for the UC2838/A, and TA = 0°C to 70°C for the
UC3838/A, VCC = 20 V, VM = 5 V, TA = TJ, (unless otherwise stated)
reference
PARAMETER
TEST CONDITIONS
UC2838/UC2838A
UC3838/UC3838A
UNITS
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Supply current
VCC = VM = 40 V
4
8
4
8
mA
Reference output
TA = 25°C
2.47
2.50
2.53
2.45
2.50
2.55
V
Line regulation
VCC = 5 V to 30 V
1
5
1
10
mV
Load regulation
IO = 0 mA to –2 mA
5
20
5
20
mV
Short-circuit current
VREF = 0 V
–30
–60
–30
–60
mA
Temperature stability
See Note 1
15
25
10
25
mV
NOTE: 1.These parameters are ensured by design but not 100% tested in production.
amplifier (each amplifier)
PARAMETER
TEST CONDITIONS
UC2838/UC2838A
UC3838/UC3838A
UNITS
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Offset voltage
VCM = 2.5 V
5
10
mV
Input bias current
VIN = 0 V
–1
–1
µA
Input offset voltage
100
100
nA
Minimum output swing
0.4
18
0.4
18
V
Output sink current
VO = 5 V
1
10
30
1
10
30
mA
Output source current
VO = 0 V
–1
–10
–20
–1
–10
–20
mA
AVOL (open loop gain)
VO = 1 V to 11 V
100
120
100
120
dB
CMRR (common mode rejection ra-
tio)
VIN = 1 V to 11 V
70
80
70
80
dB
PSRR (power supply rejection ratio)
VCC = 10 V to 20 V
70
100
70
100
dB
Gain bandwidth
See Note 1
0.6
0.8
0.6
0.8
MHz
NOTE: 1.These parameters are ensured by design but not 100% tested in production.
reset drive
PARAMETER
TEST CONDITIONS
UC2838/UC2838A
UC3838/UC3838A
UNITS
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Input leakage
VDR = 40 V
10
10
µA
Output leakage
VR = –120 V
–100
–100
µA
Input current
IR = –50 mA
–1
–2
–1
–2
mA
Maximum reset current
IDR = –3 mA
–100
–120
–200
–100
–120
–200
mA
Transconductance
IR = –10 mA to –50 mA
0.03
0.042
0.055
0.03
0.042
0.055
A/V


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