ETC IP431CSM4

IP431CSM4
PROGRAMMABLE
PRECISION
REFERENCE
1.40 ± 0.15
(0.055 ± 0.006)
5.59 ± 0.13
(0.22 ± 0.005)
0.23 rad.
(0.009)
3
2
4
1
1.27 ± 0.05
(0.05 ± 0.002)
3.81 ± 0.13
(0.15 ± 0.005)
0.64 ± 0.08
(0.025 ± 0.003)
0.25 ± 0.03
(0.01 ± 0.001)
0.23 min.
(0.009)
FEATURES
• VOLTAGE REFERENCE TOLERANCE ±1%
• PROGRAMMABLE OUTPUT VOLTAGE TO
36V
2.03 ± 0.20
(0.08 ± 0.008)
1.02 ± 0.20
(0.04 ± 0.008)
LCC3 HERMETICALLY SEALED
CERAMIC SURFACE MOUNT PACKAGE
PIN 1 - NOT CONNECTED
PIN 2 - CATHODE
PIN 3 - REFERENCE
PIN 4 - ANODE
• EQUIVALENT FULL RANGE TEMPERATURE
COEFFICIENT OF 30ppm/°C TYPICAL
• TEMPERATURE COMPENSATED FOR
OPERATION OVER FULL RATED OPERATING
TEMPERATURE RANGE
• SINK CURRENT CAPABILITY 1 TO 100 mA
• FAST TURN–ON RESPONSE
PART NUMBER
AMBIENT TEMP. RANGE
IP431CSM4
-55 TO +125°C
• LOW DYNAMIC OUTPUT IMPEDANCE
(0.2W typical)
• LOW OUTPUT NOISE VOLTAGE
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)
VKA
Cathode To Anode Voltage
IK
Cathode Current Range
-100 to +150mA
IREF
Reference Input Current Range
-0.05 to +10mA
PD
Power Dissipation @ TA = 25°C
37V
CSM4 Package
Derate Above 25°C
TJ
Maximum Operating Junction Temperature
TA
Operating Ambient Temperature Range
TSTG
Storage Temperature Range
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0.80W
6.4W/°C
150°C
See Table Above
–65 to 150°C
Prelim. 4/98
IP431CSM4
DESCRIPTION
BLOCK DIAGRAM
The IP431A circuit is a monolithic three terminal
programmable shunt regulator diode. The voltage
reference operates as a low temperature coefficient zener
which is programmable between VREF (2.5V) and 36 volts
using two external resistors. The device has a wide
operating current range of 1 mA to 100mA and a typical
dynamic impedance of 0.2 W . Active output circuitry
provides a very sharp turn-on characteristic making these
devices excellent replacements for zener diodes in many
applications. Being a shunt regulator it can be used as
either a positive or negative voltage reference.
CATHODE
REF
2.5 V REF
ANODE
RECOMMENDED OPERATING CONDITIONS
VKA
Cathode To Anode Voltage
VREF to 36V
IK
Cathode Current Range
1.0 to 100mA
ELECTRICAL CHARACTERISTICS (TA = 25 °C unless otherwise stated)
Parameter
VREF
Reference Input Voltage
DVREF
Reference Input Voltage Over
DVREF
DVKA
Ratio of Reference Voltage Change to
IREF
Reference Input Current
DIREF
Reference Input Current Deviation Over
IMIN
Temperature Range
1
(Figure 1)
Test Conditions
Min.
IP431AM
Typ.
Max.
VKA = VREF
2.47
2.495
2.52
IK = 10mA
VKA = VREF
(Figure 1) IK = 10mA
Change in Cathode to Anode Voltage
(Figure 2)
15
DVKA = 36V to 10V
-0.7
-2
R1 = 10kW
R2 = ¥
1
IK = 10mA
TA = -55 to +125°C *
R1 = 10kW
R2 = ¥
TA = -55 to +125°C *
VKA = VREF
(Figure 1)
IOFF
Off–State Cathode Current
(Figure 3) VKA = 36V
|Zka|
Dynamic Impedance 2
(Figure 1)
VKA = VREF
VREF = 0
f £ 1kHz
DIK = 1mA to 100mA
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E-mail: [email protected]
Website: http://www.semelab.co.uk
V
mV
44
-2.7
For Regulation
Semelab plc.
2.564
-1.5
(Figure 2) IK = 10mA
Minimum Cathode Current
TA = -55 to +125°C *
2.426
DVKA = 10V to VREF
IK = 10mA
(Figure 2)
Temperature Range
TA = -55 to +125°C *
Units
mV/V
4
mA
7
1
3
mA
0.5
1
mA
3
1000
nA
0.2
0.5
W
Prelim. 4/98
IP431CSM4
ELECTRICAL CHARACTERISTICS (TA = 25 °C unless otherwise stated)
Parameter
VREF
Reference Input Voltage
DVREF
Reference Input Voltage Over
DVREF
DVKA
Ratio of Reference Voltage Change to
IREF
Reference Input Current
DIREF
Reference Input Current Deviation Over
IMIN
Temperature Range 1
(Figure 1)
Test Conditions
Min.
IP431AI
Typ.
Max.
VKA = VREF
2.47
2.495
2.52
IK = 10mA
(Figure 1) IK = 10mA
(Figure 2)
R1 = 10kW
R2 = ¥
1
IK = 10mA
TA = -40 to +85°C *
R1 = 10kW
R2 = ¥
IOFF
Off–State Cathode Current
(Figure 3) VKA = 36V
|Zka|
Dynamic Impedance 2
(Figure 1)
VREF
Reference Input Voltage
DVREF
Reference Input Voltage Over
DVREF
DVKA
Ratio of Reference Voltage Change to
IREF
Reference Input Current
DIREF
Reference Input Current Deviation Over
IMIN
Temperature Range
(Figure 1)
VKA = VREF
(Figure 2)
-2.7
-2
4
mA
f £ 1kHz
0.8
2.5
mA
0.5
1
mA
3
1000
nA
0.2
0.5
W
Units
Test Conditions
Min.
IP431AC
Typ.
Max.
VKA = VREF
2.47
2.495
2.52
IK = 10mA
(Figure 1) IK = 10mA
TA = 0 to +70°C *
TA = 0 to +70°C *
2.453
2.537
3
-1.5
-2.7
DVKA = 36V to 10V
-0.7
-2
R1 = 10kW
R2 = ¥
1
IK = 10mA
TA = 0 to +70°C *
R1 = 10kW
R2 = ¥
TA = 0 to +70°C *
VKA = VREF
For Regulation
(Figure 1)
IOFF
Off–State Cathode Current
(Figure 3) VKA = 36V
|Zka|
Dynamic Impedance 2
(Figure 1)
VKA = VREF
VREF = 0
f £ 1kHz
DIK = 1mA to 100mA
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E-mail: [email protected]
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V
mV
17
DVKA = 10V to VREF
IK = 10mA
(Figure 2) IK = 10mA
Minimum Cathode Current
Semelab plc.
VREF = 0
DIK = 1mA to 100mA
(Figure 2)
Temperature Range
TA = -40 to +85°C *
VKA = VREF
Change in Cathode to Anode Voltage
mV
30
6.5
VKA = VREF
(Figure 1)
V
mV/V
-0.7
For Regulation
Parameter
-1.5
DVKA = 36V to 10V
(Figure 2) IK = 10mA
Minimum Cathode Current
2.55
7
TA = -40 to +85°C *
DVKA = 10V to VREF
IK = 10mA
(Figure 2)
1
2.44
VKA = VREF
Change in Cathode to Anode Voltage
Temperature Range
TA = -40 to +85°C *
Units
mV/V
4
mA
5.2
0.4
1.2
mA
0.5
1
mA
3
1000
nA
0.2
0.5
W
Prelim. 4/98
IP431CSM4
FIGURE 1
TEST CIRCUIT FOR VKA = VREF
Input
V KA
NOTE 1
The deviation parameter DVREF is defined as the differences between
the maximum and minimum values obtained over the full operating
ambient temperature range that applies.
IK
V REF Max
V REF
DVREF = VREF Max VREF Min
DTA = T2 - T1
V REF Min
T1
FIGURE 2
TEST CIRCUIT FOR VKA > VREF
Input
V KA
IK
The average temperature coefficient of the reference input voltage,
µVREF is defined as:
µVREF =
I REF
T2
AMBIENT TEMPERATURE
ppm
=
°C
(
DVREF
)
VREF @ 25°C
DTA
x 106
=
DVREF x 106
DTA (VREF @ 25°C)
V REF
µVREF can be positive or negative depending on whether µVREF Min
or µVREF Max occurs at the lower ambient temperature.
(
VKA = VREF 1+ R1
R2
)+I
REF
x R1
Example:
DVREF = 8.0 mV and slope is positive,
VREF @ 25°C = 2.495V, DTA = 70°C
µVREF =
FIGURE 3
TEST CIRCUIT FOR Ioff
0.008 x 106 = 45.8 ppm/°C
= 45.8 ppm/°C
70 (2.495)
NOTE 2
Input
I off
V KA
The dynamic impedance Zka is defined as:
DVKA
|Zka| =
DIK
When the device is programmed with two external resistors, R1 and
R2, (refer to Figure 2) the total dynamic impedance of the circuit is
defined as:
(
|Zka| » |Zka| 1+ R1
R2
Semelab plc.
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E-mail: [email protected]
Website: http://www.semelab.co.uk
)
Prelim. 4/98