STMICROELECTRONICS TS432

TS432
1.24V ADJUSTABLE SHUNT VOLTAGE REFERENCE
■ 1.24V TYP OUTPUT VOLTAGE
■ ULTRA LOW OPERATING CURRENT :
60µA maximum at 25°C
■ HIGH PRECISION @ 25°C
+/- 1%
+/- 0.5%
■ HIGH STABILITY WHEN USED WITH
CAPACITIVE LOADS
■ INDUSTRIAL TEMPERATURE RANGE:
-40 to +85°C
■ 100ppm/°C TEMPERATURE COEFFICIENT
DESCRIPTION
The TS432 is an adjustable low power shunt
voltage reference providing an output voltage from
1.24V to 10V over the industrial temperature
range (-40 to +85°C). Available in SOT23-3
surface mount package, it can be designed in
applications where space saving is a critical issue.
The low operating current is a key advantage for
power restricted designs. In addition, the TS432 is
very stable and can be used in a broad range of
application conditions.
L
SOT23-3L
(Plastic Micropackage)
PIN CONNECTIONS (top view)
APPLICATION
■
■
■
■
■
Computers
SOT23-3
Instrumentation
Battery chargers
Ref
Reference
Switch Mode Power Supply
Battery operated equipments
A
Anode
ORDER CODE
Precision
SOT23-3
SOT23 Marking
1%
TS432ILT
0.5%
TS432AILT
Single temperature range: -40 to +85°C
K
Cathode
L235
L236
LT = Tiny Package (SOT23-3) - only available in Tape & Reel (LT)
December 2002
1/7
TS432
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VK
Cathode voltage
12
V
IK
Cathode current
-10 to +20
mA
IREF
PD
Reference input current
Power dissipation
1)
-0.05 to +3
mA
340
mW
360
°C/W
SOT23-3
RTHJA
Thermal resistance junction to ambient for
TLEAD
Lead temperature (soldering 10 seconds)
SOT23-3
250
°C
TSTG
Storage temperature
-65 to +150
°C
TJ
Junction temperature
150
°C
Human Body Model (HBM)
Machine Model (MM)
1.5
150
kV
V
Value
Unit
V
ESD
1. Pd has been calculated with T amb = 25°C, Tj = 150°C and Rthja = 360°C/W for the SOT23-3L package
OPERATING CONDITIONS
Symbol
Parameter
VK
Cathode voltage
1.24 to 10
IK
Cathode current
60µ to 12m
A
Ambient temperature
-40 to +85
°C
TAMB
ELECTRICAL CHARACTERISTICS
Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
IK = 100µA, VK=VREF
VREF
∆VREF
IKMIN
TS432 (1%)
TS432A (0.5%)
Reference voltage tolerance over
temperature
IK = 100µA, VK=VREF
7
Tamb = 25°C
40
Minimum operating current
Reverse breakdown voltage change
with operating current range
1.228
1.234
-40°C < TAMB < +85°C
IK = 10mA, VK=10V to VREF
V
16
mV
60
µA
1.5
2
4
1.8
2.5
2
mV
6
-40°C < TAMB < +85°C
IK=10mA, R1=10KΩ, R2=+ ∞
1.252
1.246
0.7
-40°C < TAMB < +85°C
∆VREF/ Reference voltage change with output
voltage change
∆VK
Unit
65
-40°C < TAMB < +85°C
1mA < IK < 12mA
Max.
1.24
Reference voltage
IKMIN < IK < 1mA
∆VREF
Typ.
3
50
100
mV/V
IREF
Reference input current
IOFF
Off-state cathode current
RKA
Static impedance
∆IK = 100µA to 12mA
0.25
KVH
Long term stability
IK = 100µA, t = 1000hrs
120
ppm
EN
Wide band noise
IK = 100µA
200
nV/√Hz
-40°C < TAMB < +85°C
VREF=0, VK=10V
200
1
-40°C < TAMB < +85°C
100Hz < F < 10kHz
150
Note : Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation and by design.
2/7
100
0.5
nA
nA
Ω
TS432
Reference voltage vs temperature
Test circuit for VK = VREF
Reference Voltage (V)
1.252
1.248
Input
Output
VK = VREF
IK = 100µA
1.244
Ik
1.240
VK
1.236
1.232
VREF
1.228
-40
0
40
80
120
Temperature (°C)
Cathode voltage vs cathode current
Cathode voltage vs cathode current
1.5
VK Cathode voltage (V)
IK Cathode current (mA)
10
VK = VREF
TAMB = +25°C
5
0
TAMB=-40°C
1.0
TAMB=+25°C
TAMB=+85°C
0.5
TAMB=+125°C
-5
-10
-1.0
-0.5
0.0
0.5
1.0
0.0
1.5
0
20
VK Cathode voltage (V)
Reference input current vs temperature
0.4
RKA Static impedance (Ohms)
IREF Reference current (nA)
60
Static impedance vs temperature
100
IK = 10 mA
R1 = 10 KΩ
R2 = + ∞
80
60
40
20
0
-40
40
IK Cathode current (µA)
0
40
Temperature (°C)
80
120
VK = VREF
IK = 100 µA to 12 mA
0.3
0.2
0.1
0.0
-40
0
40
80
120
Temperature (°C)
3/7
TS432
Off-State current vs temperature
Test circuit for Off-State current measurement
IOFF Off-State current (nA)
150
Input
VK =10V
VREF = 0 V
VK = 10 V
100
IOFF
50
0
-40
0
40
80
120
Temperature (°C)
Ratio of change in Reference input voltage (mV/V)
Ratio of change in reference input voltage to
change in VK voltage vs temperature
Test circuit for VKA > VREF
3
Input
VK
IK
IK = 10 mA
VK = 10V to VREF
2
R1
IRE F
R2
1
0
-40
0
40
80
V REF
V K = VREF . (1+R1/R2) + IREF . R1
120
Temperature (°C)
Test circuit for phase and gain measurement
Phase and Gain vs frequency
60
180
5V
TAMB = +25°C
Gain
Gain (dB)
120
Phase
20
60
Phase (Degree)
40
23.5 kΩ
1 µF
22 µ F
33 kΩ
Output
0
2
10
3
10
4
10
Frequency (Hz)
4/7
5
10
0
6
10
Input
33 kΩ
TS432
Test circuit for pulse response at IK=100 µA
3V
18KΩ
IK = 100µA
Pulse
Generator
f=10KHz
Pulse response at IK = 1mA
Input and Output signals (Volt)
Pulse response at IK = 100 µA
Input and Ouput signals (Volt)
IK=1mA
Output
Intput
Pulse
Generator
f=10KHz
1.8KΩ
0V
Output
0V
Intput
3V
Test circuit for pulse response at IK = 1 mA
3
Input
2
Output
1
3
Input
IK = 1 mA
TAMB = + 25°C
2
1
IK = 100 µA
TAMB = + 25°C
Output
0
0
0
5
10
0
15
5
3
Input
2
IK = 100 µA
TAMB = + 25°C
Input
2
1
Output
0
5
20
IK = 1 mA
TAMB = + 25°C
3
Output
0
15
Pulse response at IK = 1mA
Input and Output signals (Volt)
Input and Output signals (Volt)
Pulse response at IK = 100 µA
1
10
Time (µs)
Time (µs)
10
Time (µs)
15
20
0
-5
0
5
10
15
20
Time (µs)
5/7
TS432
Equivalent input noise vs frequency
Block diagram
Cathode
300
Noise (nV/√Hz)
TAMB = + 25°C
Vref
200
+
-
100
1.24V
0
2
10
3
10
4
10
5
10
6
10
7
10
Frequency (Hz)
Anode
6/7
TS432
PACKAGE MECHANICAL DATA
3 PINS - TINY PACKAGE (SOT23)
A
E
e
D
e1
B
S
A1
L
H
c
Millimeters
Inches
Dim.
Min.
A
A1
A2
b
c
D
E
E1
e
e1
L
L1
k
0.890
0.010
0.880
0.300
0.080
2.800
2.100
1.200
0.400
0°
Typ.
0.950
2.900
1.300
0.950
1.900
0.500
0.540
Max.
Min.
1.120
0.100
1.020
0.500
0.200
3.040
2.640
1.400
0.035
0.0004
0.600
0.016
Typ.
0.037
0.012
0.003
0.110
0.083
0.047
0.114
0.051
0.037
0.075
0.020
0.021
Max.
0.044
0.004
0.040
0.020
0.008
0.120
0.104
0.055
0.024
8°
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
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2002 STMicroelectronics - All Rights Reserved
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