LOW POWER, BANDGAP VOL T AGE REFERENCES
NC = NO INTERNAL CONNECTION
1
2
3
4
8
7
6
5
NC
NC
NC
+
IN
NC
NC
NC
–
IN
12
TO-92-2 Plastic
(BOTTOM VIEW)
TC04ACZM
TC04BCZM
TC05ACZM
TC05BCZM
8-Pin Plastic SOIC
TC04ACOA
TC04BCOA
TC05ACOA
TC05BCOA
TC04A
TC04B
TC05A
TC05B
1
FEATURES
■ Temperature Coefficient ......................... 50ppm/°C
■ Wide Operating Current Range
TC04 ............................................ 15µA to 20mA
TC05 ............................................ 20µA to 20mA
■ Dynamic Impedance............................................ 1Ω
■ Output Tolerance ........................................ Typ. 2%
■ Output Voltage Option
TC04 ...........................................................1.25V
TC05 .............................................................2.5V
■ TO-92 Plastic Package
■ 8-Pin Plastic Narrow Body SOIC Package
APPLICATIONS
■ ADC and DAC Reference
■ Current Source Generation
■ Threshold Detectors
■ Power Supplies
■ Multimeters
GENERAL DESCRIPTION
The TC04 (1.25V output) and TC05 (2.5V output) bipolar, two-terminal, bandgap voltage references offer precision performance without premium price. These devices
do not require thin-film resistors, greatly lowering manufacturing complexity and cost.
A 50ppm/°C output temperature coefficient and 15µA
to 20mA operating current range make these devices attractive for multimeter, data acquisition converter, and telecommunication voltage references.
PIN CONFIGURATIONS
2
3
4
ORDERING INFORMATION
Part No. Package Range Voltage Coefficient
TC04ACOA 8-Pin SOIC 0°C to +70°C 1.25V 50ppm/°C
TC04ACZM TO-92-2 0°C to +70°C 1.25V 50ppm/°C
TC04BCOA 8-Pin SOIC 0°C to +70°C 1.25V 100ppm/°C
TC04BCZM TO-92-2 0°C to +70°C 1.25V 100ppm/°C
TC05ACOA 8-Pin SOIC 0°C to +70°C 2.5V 50ppm/°C
TC05ACZM TO-92-2 0°C to +70°C 2.5V 50ppm/°C
TC05BCOA 8-Pin SOIC 0°C to +70°C 2.5V 100ppm/°C
TC05BCZM TO-92-2 0°C to +70°C 2.5V 100ppm/°C
5
6
Temperature Max. Temperature
7
TELCOM SEMICONDUCTOR, INC.
8
TC04/5-6 8/23/96
3-5
TC04A
TC04B
TC05A
TC05B
LOW POWER, BANDGAP
VOL T AGE REFERENCES
ABSOLUTE MAXIMUM RATINGS*
Forward Current .................................................... +10mA
Reverse Current.................................................... +30mA
Storage Temperature Range ................– 65°C to +150°C
Operating Temperature Range
TO-92 Package ..................................... 0°C to +70°C
Lead Temperature (Soldering, 10 sec)
TO-92 Package ..............................................+300°C
Surface Mount Package .................................+300°C
Power Dissipation ............................. Limited by Forward/
Reverse Current
*Functional operation above the absolute maximum stress ratings is not
implied.
Surface Mount Package ........................0°C to +70°C
ELECTRICAL CHARACTERISTICS: T
= +25°C, unless otherwise specified.
A
Symbol Parameter Test Conditions Min Typ Max Unit
V
BR
DV
BR
TC Temperature Coefficient: IR = 100µA
I
R
Reverse Breakdown Voltage: IR = 100µA
TC04 1.24 1.26 1.28 V
TC05 2.45 2.50 2.60
Reverse Breakdown Voltage Change:
TC04 15µA < I
20µA < IR < 1mA — 0.25 1
TC05 20µA < I
25µA < IR < 1mA — 0.25 1
TC04A/TC05A — 0.003 0.005 %/°C
TC04B/TC05B — 0.003 0.01
Reverse Current:
TC04 0.015 — 20 mA
TC05 0.020 — 20
< 20mA — 10 20 mV
R
< 20mA — 10 20
R
3-6
TELCOM SEMICONDUCTOR, INC.
+15V
TC04
1µF
R
SET
81 kΩ
2
3
7
6
4
I
OUT
=
1.25V
R
SET
–
+
TC911
LOW POWER, BANDGAP
VOLTAGE REFERENCES
RESPONSE TIME TEST CIRCUIT
TC04A
TC04B
TC05A
TC05B
1
TYPICAL APPLICATIONS
3
2
+15V
+
TC911
–
7
4
TC05
50 kΩ
2.5V
180 kΩ
INPUT
6
36 kΩ
V
OUT
Battery Powered 1.25V Reference Precision Current Source10V Reference
= 10V
+9V
360 kΩ
TC04
2
OUTPUT
TC04
TC05
3
4
1.25V
5
60 kΩ
0.1 µF
6
7
8
TELCOM SEMICONDUCTOR, INC.
3-7
TC04A
TC04B
TC05A
TC05B
TYPICAL CHARACTERISTICS
LOW POWER, BANDGAP
VOLTAGE REFERENCES
TC04: Output Voltage vs
Reverse Current
1000
TA = +25°C
100
10
1
REVERSE CURRENT (µA)
0.1
0 0.25 0.5 0.75 1.0 1.25
OUTPUT VOLTAGE (V)
TC04
Response Time
10.0
TA = +25
5.0
0
1.5
VOLTAGE (V)
1.0
0.5
0
°C
INPUT
OUTPUT
0 200 400 600
TIME (µsec)
TC04: Output Voltage Change
vs Reverse Current
10
TA = +25°C
8
6
4
2
OUTPUT VOLTAGE CHANGE (mV)
0
1.5
0.01 0.1 1 10 100
REVERSE CURRENT (mA)
TC05: Output Voltage vs
1000
TA = +25°C
100
10
1
REVERSE CURRENT (µA)
0.1
0 0.5 1.0 1.5 2.0 2.5 3.0
Reverse Current
OUTPUT VOLTAGE (V)
TC04: Forward Voltage vs
1.2
1.0
0.8
0.6
0.4
FORWARD VOLTAGE (V)
0.2
0
0.01 0.1 1 10 100
10
TA = +25
8
6
4
2
OUTPUT VOLTAGE CHANGE (mV)
0
0.01 0.1 1 10 100
Forward Current
TA = +25
°C
FORWARD CURRENT (mA)
TC05: Output Voltage Change
vs Reverse Current
°C
REVERSE CURRENT (mA)
TC05: Forward Voltage vs
Forward Current
1.2
TA = +25°C
1.0
0.8
0.6
0.4
FORWARD VOLTAGE (V)
0.2
0
0.01 0.1 1 10 100
FORWARD CURRENT (mA)
3-8
10
TA = +25°C
5
0
3
VOLTAGE (V)
2
1
0
TC05
Response Time
INPUT
OUTPUT
0 200 400 600
TIME (µsec)
TELCOM SEMICONDUCTOR, INC.
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