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■LOW Tc: 50 ppm/°C MAXIMUM
■1.225V OUTPUT VOLTAGE
■LOW OPERATING CURRENT: 45µA max @
25°C
■HIGH PRECISION AT 25°C: ±1%
■STABLE WHEN USED WITH CAPACITIVE
LOADS
■INDUSTRIAL TEMPERATURE RANGE:
-40 to +85°C
DESCRIPTION
The TS824 is a low power shunt voltage reference
featuring a very low temperature coefficient of
50ppm/°C as a maximum value. Providing 1.225V
output voltage, the TS824 operates over the
industrial temperature range (-40 to +85°C). Ideal
for battery-powered equipments where power
conservation is critical, the TS824 is housed in a
tiny SOT23-3 package allowing space saving.
The TS824 is typically stable with any capacitive
loads within the entire temperature range. The
product is thus easy to use and the design simpli-
fied.
APPLICATION
■Instrumentation,
■Data acquisition systems,
■Portable, Battery powered equipments
■Power management
ORDER CODE
LT = Tiny Package (SOT23-3) - only available in Tape & Reel (LT)
PIN CONNECTIONS (top view)
Voltage Precision SOT23-3 SOT23
Marking
1.225V 1% TS824ILT-1.2 L251
Single temperature range: -40 to +85°C
L
SOT23-3L
(Plastic Micropackage)
TS824-1.2
HIGH THERMAL STABILITY
MICROPOWER SHUNT VOLTAGE REFERENCE
March 2002
00p é]
TS824-1.2
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ABSOLUTE MAXIMUM RATINGS
OPERATING CONDITIONS
ELECTRICAL CHARACTERISTICS (note 3)
Tamb = 25°C (unless otherwise specified)
Symbol Parameter Value Unit
IKReverse Breakdown Current 20 mA
IFForward Current 10 mA
PDPower Dissipation (note 1) SOT23-3 360 mW
TStd Storage Temperature -65 to +150 °C
TJ Junction Temperature +150 °C
TLead Lead Temperature (soldering, 10 seconds) +260 °C
ESD Human Body Model (HBM) (note 2) 2 kV
Machine Model (MM) (note 2) 200 V
Note 1: The maximum power dissipation must be derated at high temperature. It can be calculated using TJMAX (maximum junction tem-
perature), RTHJA (Thermal resistance junction to ambient) and TA (Ambient temperature). The maximum power dissipation formula at any
temperature is PDMAX= (TJMAX - TA) / RTHJA. RTHJA is 340°C/W for the SOT23-3 package.
Note 2: The Human Body Model (HBM) is defined as a 100pF capacitor discharge through a 1.5kΩ resistor into each pin.
The Machine Mode (MM) is defined as a 200pF capacitor discharge directly into each pins.
Symbol Parameter Value Unit
Imin Minimum Operating Current 40 µA
Imax Maximum Operating Current 12 mA
Toper Operating Free Air Temperature Range -40 to +85 °C
Symbol Parameter Test Condition Min. Typ. Max. Unit
VK
Reverse Breakdown Voltage IK = 100µA1.213 1.225 1.237 V
Reverse Breakdown Voltage Tolerance IK = 100µA
-40°C < Tamb < +85°C -12
-16 +12
+16 mV
IKMIN Minimum Operating Current Tamb = 25°C 40 45 µA
-40°C < Tamb < +85°C 50
∆VK /∆TAverage Temperature Coefficient
(note 4) IK = 100µA50 ppm/°C
∆VK /∆IKReverse Breakdown Voltage Change
with Operating Current Range
IKMIN < IK < 1mA
-40°C < Tamb < +85°C 0.3 1
1.5 mV
1mA < IK < 12mA
-40°C < Tamb < +85°C 2.5 8
10
RKA Static Impedance
∆IK = IKMIN to 1mA
-40°C < Tamb < +85°C 0.3 1
1.5 Ω
∆IK = 1mA to 12mA
-40°C < Tamb < +85°C 0.25 0.7
0.9
KVH Long Term Stability IK = 100µA, t = 1000hrs 120 ppm
ENWide Band Noise IK = 100µA
100Hz < f < 10kHz 200 nV/√Hz
Note 3: Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation and by design.
Note 4: The total tolerance within the industrial range, where the maximum ∆T versus 25°C is 65°C, is explained hereafter:
± 1 % + (± 50 ppm/°C x 65°C) = ± 1.325 %
M, /77 é]
TS824-1.2
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Reference voltage versus cathode current
Test circuit
Static impedance for Ik < 1mA
Reference voltage versus cathode current
Reference voltage versus Temperature
Static impedance for Ik > 1mA
-10 -5 0 5 10
-1.0
-0.5
0.0
0.5
1.0
1.5
T = +25°C
Reference voltage (V)
Cathode current (mA)
IK=(VIN-VREF)/R
VOUT=VREF
R
VIN
i=0
-40-200 20406080
0.0
0.5
1.0
1.5
Static impedance for Ik < 1mA (
Ω
)
Temperature (°C)
0 255075100
0.0
0.5
1.0
1.5
T=-40°C
T=+25°C
T=+85°C
Reference voltage (V)
Cathode current (µA)
-40-200 20406080
1.210
1.215
1.220
1.225
1.230
1.235
1.240
Cathode voltage (V)
Temperature (°C)
-40-200 20406080
0.0
0.3
0.6
0.9
Static impedance for Ik > 1mA (
Ω
)
Temperature (°C)
U
TS824-1.2
4/5
Start-Up characteristics with low Ik (100µA)
Noise versus frequency
Start-Up schematic with low Ik (100µA)
0 5 10 15 20
0
2
4
Voltage (V)
Voltage reference
Input signal
Time (µs)
0.1 1 10 100 1000 10000
0
100
200
300
T = +25°C
Noise (nV /
√
Hz)
Frequency (kHz)
Ik=100µA
Output
18 KΩ
Pul se
Gener at or
Intput
TS824-1.2
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PACKAGE MECHANICAL DATA
3 PINS - TINY PACKAGE (SOT23-3)
Dimensions Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 0.890 1.120 0.035 0.044
A1 0.010 0.100 0.0004 0.004
A2 0.880 0.950 1.020 0.037 0.040
b 0.300 0.500 0.012 0.020
c 0.080 0.200 0.003 0.008
D 2.800 2.900 3.040 0.110 0.114 0.120
E 2.100 2.640 0.083 0.104
E1 1.200 1.300 1.400 0.047 0.051 0.055
e 0.950 0.037
e1 1.900 0.075
L 0.400 0.500 0.600 0.016 0.020 0.024
L1 0.540 0.021
k0° 8°
A
A1
A2
D
e
e1
b
E
E1
0.10 C
C
SEATING
PLANE
L1
L
0.25
GAUGE
PLANE
c
k
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consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
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previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
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