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