TS824-1.2
HIGH THERMAL STABILITY
MICROPOWER SHUNT VOLTAGE REFERENCE
■ 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 TEMPERAT URE 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 a ny capacitive
loads within the entire temperature range. The
product is thus easy to use and t he des ign simplified.
L
SOT23-3L
(Plastic Micropacka ge)
PIN CONNECTIONS (top view)
APPLICATION
■ Instrumentation,
■ Data acquisition systems,
■ Portable, Battery powered equipments
■ Power management
ORDER CODE
Voltage Precision SOT23-3
1.225V 1% TS824ILT-1.2 L251
Single temperature range: -40 to +85°C
LT = Tiny Package (SOT23- 3) - only available in Tape & Reel (LT)
March 2002
SOT23
Marking
1/5
TS824-1.2
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
I
Reverse Breakdown Current 20 mA
K
I
Forward Current 10 mA
F
P
Power Dissipation (note 1) SOT23-3 360 mW
D
T
T
ESD Human Body Model (HBM) (note 2) 2 kV
Storage Temperature -65 to +150 °C
Std
TJ Junction Temperature +150 °C
Lead Tempera ture (solde ring, 10 second s) +260 °C
Lead
Machine Model (MM) (note 2) 200 V
Note 1: The maximu m power dissi pation mus t be derated at hi gh temper at ure. It can be calculated using T
perat u re), R
temperature is P
Note 2: T he Human Body Model (HBM) is de fined 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 i nt o each pins .
(Thermal resistance junction to ambient) and TA (Ambient temperature). The maximum power dissipation formula at any
THJA
DMAX
= (T
JMAX
- TA) / R
THJA. RTHJA
is 340°C/ W f or the SOT23-3 package.
(max i m um j un c tion tem-
JMAX
OPERATING CONDITIONS
Symbol Parameter Value Unit
I
I
T
Minimum Operating Current 40
min
Maximum Operating Current 12 mA
max
Operating Free Air Temperature Range -40 to +85 °C
oper
ELECTRICAL CHARACTERISTICS (note 3)
= 25°C (unless otherwise specified)
T
amb
Symbol Parameter Test Condition Min. Typ. Max. Unit
I
Reverse Breakdown Voltage
V
K
Reverse Breakdown Voltage Tolerance
I
Minimum Operating Current
KMIN
Average Temperature Coefficient
/∆T
V
∆
K
(note 4)
Reverse Breakdown Voltage Change
/∆I
V
∆
K
K
with Operating Current Range
R
Static Impedance
KA
K
Long Term Stability
VH
E
Wide Band Noise
N
= 100µA
K
= 100µA
I
K
-40°C < T
= 25°C
T
amb
-40°C < T
< +85°C
amb
< +85°C
amb
IK = 100µA
I
< IK < 1mA
KMIN
-40°C < T
1mA < I
-40°C < T
= I
I
∆
K
-40°C < T
I
= 1mA to 12mA
∆
K
-40°C < T
I
= 100µA, t = 1000hrs
K
I
= 100µA
K
amb
< 12mA
K
amb
to 1mA
KMIN
amb
amb
< +85°C
< +85°C
< +85°C
< +85°C
100Hz < f < 10kHz
1.213 1.225 1.237 V
-12
-16
+12
+16
mV
40 45
50
50 ppm/°C
0.3 1
1.5
2.5 8
mV
10
0.3 1
1.5
0.25 0.7
0.9
120 ppm
200 nV/√Hz
A
µ
A
µ
Ω
Note 3: Limits are 100% produ ct i on tested at 25°C. Limits over temperature ar e guaranteed through c orrelation and by design.
Note 4: The total tolerance within the industrial range, where the maximum ∆T versus 2 5°C is 65°C, is explained hereaft er:
±
1 % + (± 50 ppm/°C x 65 °C) = ± 1.325 %
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TS824-1.2
Reference voltage versus catho de cur rent
1.5
1.0
T = +25°C
0.5
0.0
Reference voltage (V)
-0.5
-1.0
-10 -5 0 5 10
Cath o de current (mA)
Test circuit
REF
i=0
)/R
VOUT=VREF
R
IK=(VIN-V
V
IN
Reference voltage versus cathode current
1.5
1.0
T=+85°C
0.5
Reference voltage (V)
0.0
0 255075100
T=+25°C
T=-40°C
Cath od e cu rre nt (µA)
Reference voltage versus Temperatu re
1.240
1.235
1.230
1.225
1.220
Cathode voltage (V)
1.215
Static impedance for Ik < 1mA
)
Ω
1.5
1.0
0.5
Stat ic impedance for Ik < 1 mA (
0.0
-40-200 20406080
Temperature (°C)
1.210
-40-200 20406080
Temperature (°C)
Static impedance for Ik > 1mA
)
Ω
0.9
0.6
0.3
Static impedance for Ik > 1mA (
0.0
-40-200 20406080
Temperature (°C)
3/5
TS824-1.2
Start-Up characteristics with low Ik (100µA)
4
Input signal
2
Voltage (V)
0
0 5 10 15 20
Voltage reference
Time (µs)
Noise versus frequency
300
T = +25°C
Hz)
200
√
Start-Up schematic with low Ik (100µA)
18 K
Ω
Ik=100µA
Pulse
Generator
Intput
Output
Noise (nV /
100
0
0.1 1 10 100 1 000 10000
Frequency (kHz)
4/5
PACKAGE MECHANICAL DATA
3 PINS - T INY PACKAGE (SOT23-3)
TS824-1.2
E
SEATING
PLANE
C
D
e
E1
b
e1
A2
A1
GAUGE
PLANE
C
0.10
A
0.25
k
L
L1
c
Millimeters Inches
Dimensions
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
k 0° 8°
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