PRECISION SHUNT VOLTAGE
REFERENCE
May 1, 2000
SC1004(A)
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The SC1004(A) is a two terminal precision voltage
reference with thermal stability guaranteed over
temperature. The SC1004(A) has a typical dynamic
output impedance of 0.2Ω.= Active output circuitry
provides a very sharp turn on characteristic - the
minimum operating current is 20µA, with a maximum of
20mA.
Coming with an initial tolerance of ± 0.8% (0.32% for
SC1004A), and with two available voltage options
(1.235V and 2.5V) in a small SO-8 package, the
SC1004(A) is ideally suited for very low power circuitry
such as temperature sensors and portable meters.
FEATURES
•=
Trimmed bandgap design (0.8%, 0.32% for
•=
•=
•=
•=
•=
•=
•=
SC1004A version)
Wide operating current range 20µA to 20mA
Low dynamic impedance (0.2Ω)
SO-8 package
APPLICATIONS
Micropower circuitry
Portable meters
Battery powered systems
Temperature sensors
ORDERING INFORMATION
BLOCK DIAGRAM
VOLTAGE
1.235 V
SC1004CS8-1.2.TR
SC1004ACS8-1.2.TR
(1)
INITIAL
ACCURACY
2.5 V
Cathode
SC1004CS8-2.5.TR
-
±0.8%
±0.32%
Notes:
(1) Only available in tape and reel packaging. A reel
contains 2500 devices.
ABSOLUTE MAXIMUM RATINGS
Anode
PIN CONFIGURATION
SO-8 Lead (Top View)
Parameter
Reverse Current
Operating Temperature
Range
Operating Junction
Temperature Range
Storage Temperature
Range
Lead Temperature
(Soldering) 10 seconds
Symbol Maximum Units
20
T
A
T
J
T
STG
T
LEAD
-40 to +85
-40 to +150
-65 to +150
300
mA
°C
°C
°C
°C
SYMBOL DIAGRAM
Anode
Cathode
1
© 2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
PRECISION SHUNT VOLTAGE
REFERENCE
May 1, 2000
SC1004(A)
ELECTRICAL CHARACTERISTICS
T
A
= 25°C unless otherwise specified.
Parameter
Reverse Breakdown Voltage,
SC1004
Symbol
V
Z
I
Z
= 100µA
Condition
T
A
= 25°C
T
A
= 0 to +70°C
MIN
-1.2
TYP
MAX
MIN
-2.5
TYP
MAX UNITS
V
1.225 1.235 1.245 2.480 2.500 2.520
1.220 1.235 1.250 2.470 2.500 2.530
T
A
= -40 to +85°C 1.215 1.235 1.255 2.460 2.500 2.535
Reverse Breakdown Voltage,
SC1004A
V
Z
I
Z
= 100µA
T
A
= 25°C
T
A
= 0 to +70°C
∆
V
Z
∆
T
1.231 1.235 1.239
1.225 1.235 1.245
N/A
N/A
N/A
N/A
N/A
N/A
20
N/A
N/A
N/A
V
T
A
= -40 to +85°C 1.220 1.235 1.245
Average Temperature Coefficient
Minimum Operating Current
Ratio of Change in V
Z
to Change in I
Z
I
Z(min)
≤
I
Z
≤
20mA
T
A
= -40 to +85°C
I
Z(min)
< I
Z
< 1mA
T
A
= 25°C
T
A
= -40 to +85°C
1mA < I
Z
< 20mA T
A
= 25°C
T
A
= -40 to +85°C
Reverse Dynamic Impedance
Z
R
I
Z
= 100µA
T
A
= 25°C
T
A
= -40 to +85°C
Wideband Noise (RMS)
Long Term Stability of Reverse Break-
down Voltage
e
N
∆V
Z
I
Z
= 100µA, 10Hz < f < 10kHz
t = 1000 hours, T = 25°C ± 0.1°C,
I
Z
= 100µA
60
20
0.2
20
8
10
1.0
1.5
10
20
0.6
1.5
ppm/°C
20
1.0
1.5
10
20
µA
mV
I
Z(min)
∆
V
Z
∆
I
Z
12
0.2
0.6
1.5
Ω
120
20
µV
ppm
2
© 2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
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