TS432 [TI]
1.24 V adjustable shunt voltage reference; 1.24 V可调分流基准电压源
| 型号： | TS432 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 1.24 V adjustable shunt voltage reference |
| 文件： | 总11页 (文件大小：185K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TS432
1.24 V adjustable shunt voltage reference
Features
■ 1.24 V typical output voltage
■ Ultra low operating current: 60 µA maximum at
25° C
■ High precision at 25° C:
L
+/- 1%
SOT23-3L
(Plastic micropackage)
+/- 0.5%
■ High stability when used with capacitive loads
■ Industrial temperature range: -40° C to +85° C
■ 100 ppm/°C temperature coefficient
Pin connections
(top view)
Applications
■ Computers
SOT23-3
■ Instrumentation
Ref
Reference
■ Battery chargers
■ Switch mode power supply
■ Battery operated equipments
A
Anode
K
Cathode
Description
The TS432 is an adjustable low power shunt
voltage reference providing an output voltage
from 1.24 V to 10 V over the industrial
temperature range (-40° C to +85° C). Available in
SOT23-3 surface mount package, it can be
designed in applications where space saving is
critical.
The low operating current is also 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.
April 2008
Rev 2
1/11
www.st.com
11
Absolute maximum ratings and operating conditions
TS432
1
Absolute maximum ratings and operating conditions
Table 1.
Symbol
Absolute maximum ratings (AMR)
Parameter
Value
Unit
VK
IK
Cathode voltage
12
-10 to +20
-0.05 to +3
340
V
mA
mA
mW
°C/W
°C
Cathode current
Iref
Reference input current
Pd
Power dissipation (1) SOT23-3
Thermal resistance junction to ambient for SOT23-3
Lead temperature (soldering 10 seconds)
Storage temperature
Rthja
Tlead
Tstg
Tj
360
250
-65 to +150
150
°C
Junction temperature
°C
HBM: human body model
MM: machine model
1.5
kV
ESD
150
V
1. Pd is calculated with Tamb = 25° C, Tj = 150° C and Rthja = 360° C/W.
Table 2.
Symbol
Operating conditions
Parameter
Value
Unit
VK
IK
Cathode voltage
Cathode current
1.24 to 10
60µ to 12m
-40 to +85
V
A
Tamb
Ambient temperature
°C
2/11
TS432
Electrical characteristics
2
Electrical characteristics
Table 3.
Symbol
T
= 25°C (unless otherwise specified)
amb
Parameter
Test conditions
Min. Typ. Max.
Unit
IK = 100µA, VK=VREF
TS432 (1%)
1.24
Vref
Reference voltage
1.228
1.234
1.252
1.246
V
TS432A (0.5%)
Reference voltage tolerance over
temperature
ΔVref
IK = 100µA, VK=VREF
7
16
mV
T
amb = 25°C
-40°C < Tamb < +85°C
Kmin < IK < 1mA
40
60
65
1.5
2
IKmin
Minimum operating current
μA
I
0.7
2
-40°C < Tamb < +85°C
1mA < IK < 12mA
Reverse breakdown voltage change with
operating current range
ΔVref
mV
4
-40°C < Tamb < +85°C
IK = 10mA, VK=10V to VREF
-40°C < Tamb < +85°C
6
1.8
2.5
3
Reference voltage change with output
voltage change
ΔVref/ΔVK
mV/V
nA
IK=10mA, R1=10KΩ,
R2=+ ∞
50
1
100
Iref
Reference input current
Off-state cathode current
-40°C < Tamb < +85°C
200
100
150
0.5
VREF=0, VK=10V
IOFF
nA
-40°C < Tamb < +85°C
ΔIK = 100µA to 12mA
IK = 100µA, t = 1000hrs
RKA
KVH
Static impedance
Long term stability
0.25
120
W
ppm
IK = 100µA
100Hz < F < 10kHz
EN
Wide band noise
200
nV/√Hz
Note:
Limits are 100% production tested at 25° C. Behavior over the temperature range is
guaranteed through correlation and by design.
3/11
Electrical characteristics
TS432
Figure 1.
Reference voltage vs temperature Figure 2.
Test circuit for V = V
K
ref
1.252
Input
1.248
1.244
1.240
1.236
1.232
1.228
Output
VK = VREF
Ik
IK = 100µA
VK
VREF
-40
0
40
80
120
Temperature (°C)
Figure 3.
Cathode voltage vs cathode current Figure 4.
Cathode voltage vs cathode current
1.5
10
TAMB=-40°C
VK = VREF
5
0
TAMB = +25°C
1.0
0.5
0.0
TAMB=+25°C
TAMB=+85°C
TAMB=+125°C
-5
-10
-1.0
-0.5
0.0
0.5
1.0
1.5
0
20
40
60
VK Cathode voltage (V)
IK Cathode current (µA)
Figure 5.
Reference input current vs
temperature
Figure 6.
Static impedance vs temperature
100
80
60
40
20
0
0.4
IK = 10 mA
R1 = 10 KΩ
R2 = + ∞
VK = VREF
0.3
0.2
0.1
IK = 100 µA to 12 mA
0.0
-40
-40
0
40
80
120
0
40
80
120
Temperature (°C)
Temperature (°C)
4/11
TS432
Electrical characteristics
Figure 7.
Off-state current vs temperature
Figure 8.
Test circuit for off-state current
measurement
150
Input
VK =10V
VREF = 0 V
VK = 10 V
100
50
0
IOFF
-40
0
40
80
120
Temperature (°C)
Figure 9.
Ratio of change in reference input Figure 10. Test circuit for V > V
KA REF
voltage to change in V voltage vs
K
temperature
3
2
1
Input
VK
K
I
IK = 10 mA
R1
R2
VK = 10V to VREF
IREF
VREF
0
-40
0
40
Temperature (°C)
80
120
REF
VK = VREF . (1+R1/R2) + I
. R1
Figure 11. Phase and gain vs frequency
Figure 12. Test circuit for phase and gain
measurement
60
180
120
60
5V
TAMB = +25°C
Gain
40
23.5 kΩ
22 µF
Phase
33 kΩ
20
1 µF
Output
33 kΩ
Input
0
0
102
103
104
105
106
Frequency (Hz)
5/11
Electrical characteristics
TS432
Figure 13. Test circuit for pulse response at
Figure 14. Test circuit for pulse response at
I = 1 mA
I =100 µA
K
K
3V
18KΩ
3V
1.8KΩ
IK = 100µA
IK=1mA
V
0V
Pulse
Pulse
Generator
f=10KHz
Generator
f=10KHz
Figure 15. Pulse response at I = 100 µA
Figure 16. Pulse response at I = 1 mA
K
K
3
3
Input
Input
IK = 1 mA
2
2
TAMB = + 25°C
Output
1
1
IK = 100 µA
Output
T
AMB = + 25°C
0
0
0
5
10
15
0
5
10
Time (µs)
15
20
Time (µs)
Figure 17. Pulse response at I = 100 µA
Figure 18. Pulse response at I = 1 mA
K
K
IK = 1 mA
AMB = + 25°C
3
3
T
Input
Input
2
2
1
0
IK = 100 µA
1
0
TAMB = + 25°C
Output
5
Output
5
0
10
15
20
-5
0
10
Time (µs)
15
20
Time (µs)
6/11
TS432
Electrical characteristics
Figure 19. Equivalent input noise vs
frequency
Figure 20. Block diagram
300
TAMB = + 25°C
Cathode
200
100
0
Vref
+
-
1.24V
102
103
104
105
106
107
Anode
Frequency (Hz)
7/11
Package information
TS432
3
Package information
In order to meet environmental requirements, STMicroelectronics offers these devices in
®
ECOPACK packages. These packages have a lead-free second level interconnect. The
category of second level interconnect is marked on the package and on the inner box label,
in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an STMicroelectronics
trademark. ECOPACK specifications are available at: www.st.com.
8/11
TS432
Package information
Figure 21. SOT23-3 package mechanical drawing
7110469/A
Table 4.
Ref.
SOT23-3 package mechanical data
Dimensions
Millimeters
Typ.
Mils
Typ.
Min.
Max.
Min.
Max.
A
A1
A2
b
0.890
0.010
0.880
0.300
0.080
2.800
2.100
1.200
1.120
0.100
1.020
0.500
0.200
3.040
2.64
35.05
0.39
44.12
3.94
0.950
2.900
34.65
11.81
3.15
37.41
40.17
19.69
7.88
C
D
110.26
82.70
47.26
114.17
119.72
103.96
55.13
E
E1
e
1.300
0.950
1.900
1.400
51.19
37.41
74.82
e1
L
0.400
0°
0.600
8°
15.75
0°
23.63
8°
L1
k
0.540
21.27
9/11
Ordering information
TS432
4
Ordering information
Table 5.
Precision
Order codes
Order code
Temperature
range
Package
Packing
Marking
1%
TS432ILT
L235
L236
-40° C to
+85° C
SOT23-3
Tape & reel
0.5%
TS432AILT
5
Revision history
Table 6.
Date
Document revision history
Revision
Changes
16-Dec-2002
7-Apr-2008
1
Initial release.
Corrected package mechanical data.
Updated document format.
2
10/11
TS432
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