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Not Recommended For New Design
LX1004
1.2V & 2.5V MICROPOWER VOLTAGE REFERENCE
T
H E
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N F I N I T E
P
O W E R
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O F
N N O V A T I O N
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R O D U C T I O N
D
H E E T
KEY FEATURES
DESCRIPTION
Process and circuit design optimization provide
for high accuracy with initial tolerance values of
±4mV and ±20mV, respectively. Complementing
their initial accuracy, the bandgap reference is
temperature compensated to deliver 20ppm
performance over the 0° to 70°C operating
temperature range.
„ Guaranteed ±4mV Initial
The LX1004 from Linfinity is a pin for-pin
replacement for the LT1004 and LM385 families
of voltage references.
„ Operates Up to 20mA
„ Very Low Dynamic Impedance
Accuracy LX1004-1.2
„ Guaranteed ±20mV Initial
Accuracy LX1004-2.5
„ Guaranteed 10µA Operating
Current
„ Guaranteed Temperature
Performance
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The LX1004 Micropower Voltage References
are two terminal bandgap reference diodes designed
and optimized for accurate low power operation in
portable and other power sensitive systems.
Operating currents are guaranteed from as low as
10µA up to 20mA giving designers a great deal of
flexibility in optimizing power consumption, noise
and ultimate application performance. The LX1004
is available in fixed 1.2V and 2.5V reference
values.
S
A T A
APPLICATIONS
„
„
„
„
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
Portable Meter References
Portable Test Instruments
Battery Operated Systems
Current Loop Instrumentation
PRODUCT HIGHLIGHT
MICROPOWER REFERENCE FROM 2 CELL BATTERY
2V
MICROPOWER REFERENCE FROM 9V BATTERY
9V
39K
200K
2.5V
LM1004-1.2
LM1004-2.5
O
1.235V
TA (°C)
0 to 70
Reference
Voltage
1.2V
2.5V
PACKAGE ORDER INFO
Plastic SOIC
Initial
DM 8-Pin
Tolerance
RoHS Compliant / Pb-free
±4mV
±20mA
Plastic TO-92
3-Pin
LP
Transition DC: 0440
RoHS Compliant / Pb-free
Transition DC: 0509
LX1004CDM-1.2
LX1004CDM-2.5
LX1004CLP-1.2
LX1004CLP-2.5
Note: Available in Tape & Reel. Append the letters “TR” to the part number (i.e. LX1004CDM-2.5-TR).
Copyright © 1996
Rev. 1.2a,2005-03-08
LINFINITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
1
PRODUCT DATABOOK 1996/1997
LX1004
1.2V & 2.5V M I C R O P O W E R V O LTA G E R E F E R E N C E S
P
R O D U C T I O N
A B S O L U T E M A X I M U M R AT I N G S
D
A T A
S
H E E T
PACKAGE PIN OUTS
(Note 1)
Reverse Breakdown Current .................................................................................... 30mA
Forward Current ........................................................................................................ 10mA
Operating Temperature Range ....................................................................... 0°C to 70°C
Storage Temperature Range ...................................................................... -65°C to 150°C
Lead Temperature (soldering, 10 seconds) ............................................................. 300°C
Pb-free / RoHS Peak Package Solder Reflow Temp (40 second max. exposure) .............. 260°C (+0, -5)
CATHODE
N/C
6. CATHODE
5. N/C
1.
8.
2.
7.
3.
4.
DM PACKAGE
(Top View)
100% Pb-free / RoHS Matte Tin Lead Finish
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Note 1. Values beyond which damage may occur. All voltages are specified with respect to
ground, and all currents are positive into the specified terminal
N/C
N/C
N/C
ANODE
1. ANODE
T H E R MAL DATA
2. CATHODE
3. N/C
DM PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θ JA
165ºC/W
LP PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θ JA
165ºC/W
LP PACKAGE
(Top View)
O
The θ JA numbers are guidelines for the thermal performance of the device/pc-board system.
All of the above assume no ambient airflow.
2
Copyright © 1996
Rev. 1.2a 8/04
PRODUCT DATABOOK 1996/1997
LX1004
1.2V & 2.5V M I C R O P O W E R V O LTA G E R E F E R E N C E S
P
R O D U C T I O N
D
A T A
S
H E E T
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply to TA = 25ºC for LX1004C. Typ. number represents TA = 25ºC value.
LX1004 - 1.2
Parameter
Reverse Breakdown Voltage
VZ
∆VZ
∆Temp
IMIN
Test Conditions
IR = 100µA, TA = 25°C
0°≤ TA ≤ 70°C
IMIN ≤ IR ≤ 20mA
LX1004 - 1.2
Min. Typ.
Max.
1.231
1.225
0°≤ TA ≤ 70°C
I MIN ≤ IR ≤ 1mA, TA = 25°C
IMIN ≤ IR ≤ 1mA, 0° ≤ T A ≤ 70°C
1mA ≤ IR ≤ 20mA, TA = 25°C
1mA ≤ IR ≤ 20mA, 0° ≤ TA ≤ 70°C
IR = 100µA, TA = 25°C
IR = 100µA, 0° ≤ TA ≤ 70°C
IR = 100µA; 10Hz ≤ f ≤ 10kHz
IR = 100µA; TA = 25°C ± 0.1°C
1.235
1.235
20
1.239
1.245
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Average Temperature Coefficient
Symbol
Minimum Operating Current
Reverse Breakdown Voltage Change
with Current
Reverse Dynamic Impedance
Wide Band Noise (RMS)
Long Term Stability
∆VZ
∆IR
rz
en
∆VZ
∆Time
8
0.2
10
1
1.5
10
20
0.6
1.5
60
20
Units
V
V
ppm/°C
µA
mV
mV
mV
mV
Ω
Ω
µV
ppm/kHr
LX1004 - 2.5
Parameter
Reverse Breakdown Voltage
Average Temperature Coefficient
Minimum Operating Current
Reverse Breakdown Voltage Change
with Current
Reverse Dynamic Impedance
O
Wide Band Noise (RMS)
Long Term Stability
Symbol
VZ
∆VZ
∆Temp
IMIN
∆VZ
∆IR
rz
en
∆VZ
∆Time
Test Conditions
IR = 100µA, TA = 25°C
0°≤ TA ≤ 70°C
IMIN ≤ IR ≤ 20mA
2.480
2.470
2.500
0°≤ TA ≤ 70°C
I MIN ≤ IR ≤ 1mA, TA = 25°C
IMIN ≤ IR ≤ 1mA, 0° ≤ T A ≤ 70°C
1mA ≤ IR ≤ 20mA, TA = 25°C
1mA ≤ IR ≤ 20mA, 0° ≤ TA ≤ 70°C
IR = 100µA, TA = 25°C
IR = 100µA, 0° ≤ TA ≤ 70°C
IR = 100µA; 10Hz ≤ f ≤ 10kHz
IR = 100µA; TA = 25°C ± 0.1°C
12
0.2
Units
2.520
2.530
V
V
ppm/°C
20
1
1.5
10
20
0.6
1.5
µA
mV
mV
mV
mV
Ω
Ω
µV
ppm/kHr
20
120
20
GRAPH / CURVE INDEX
Characteristic Curves — LX1004-1.2V
Characteristic Curves — LX1004-2.5V
FIGURE #
FIGURE #
1.
TEMPERATURE DRIFT
1.
RESPONSE TIME
2.
REVERSE CHARACTERISTICS
2.
REVERSE CHARACTERISTICS
3.
REVERSE VOLTAGE CHANGE
3.
FORWARD CHARACTERISTICS
4.
FORWARD CHARACTERISTICS
4.
TEMPERATURE DRIFT
5.
REVERSE DYNAMIC IMPEDANCE
5.
NOISE VOLTAGE
6.
NOISE VOLTAGE
6.
REVERSE DYNAMIC IMPEDANCE
7.
RESPONSE TIME
Copyright © 1996
Rev. 1.2a 8/04
LX1004 - 2.5
Min. Typ.
Max.
3
PRODUCT DATABOOK 1996/1997
LX1004
1.2V & 2.5V M I C R O P O W E R V O LTA G E R E F E R E N C E S
P
R O D U C T I O N
D
A T A
S
H E E T
C H A R A C T E R I S T I C C U R V E S — LX1004-1.2V
FIGURE 1. — TEMPERATURE DRIFT
FIGURE 2. — REVERSE CHARACTERISTICS
1.242
100
IR = 100µA
1.24
Reverse Current - (µA)
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Reference Voltage - (V)
TA = 0 to 70°C
1.238
1.236
1.234
1.232
1.23
10
1
1.228
0.1
1.226
0
10
20
30
40
50
60
0
70
0.2
0.4
FIGURE 3. — REVERSE VOLTAGE CHANGE
1.0
1.2
1.4
FIGURE 4. — FORWARD CHARACTERISTICS
1.2
16
TA = 25°C
14
Forward Voltage - (V)
TA = 0 to 70°C
10
O
Output Voltage Change - (mV)
0.8
Reverse Voltage - (V)
Temperature - (°C)
12
0.6
8
6
4
2
0.8
0.4
0
-2
-4
0.01
0.1
1
10
Reverse Current - (mA)
4
100
0
0.01
0.1
1
10
100
Forward Current - (mA)
Copyright © 1996
Rev. 1.2a 8/04
PRODUCT DATABOOK 1996/1997
LX1004
1.2V & 2.5V M I C R O P O W E R V O LTA G E R E F E R E N C E S
P
D
R O D U C T I O N
A T A
S
H E E T
C H A R A C T E R I S T I C C U R V E S — LX1004-1.2V
FIGURE 5. — REVERSE DYNAMIC IMPEDANCE
FIGURE 6. — NOISE VOLTAGE
800
1000
(VN) Noise Voltage - (nV/ Hz)
700
100
600
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Dynamic Impedance - (Ω)
TA = 25°C
10
1
500
400
300
200
100
0
10
0.1
10
1k
100
10k
IR = 100µA
TA = 25°C
100k
100
(f) Frequency - (Hz)
1k
10k
100k
(f) Frequency - (Hz)
Input Voltage
O
Output Voltage
FIGURE 7. — RESPONSE TIME
1.5V
1.0V
VIN
0.5V
36k
VOUT
0
5V
0
0
50
100
500
550
Time - (µs)
Copyright © 1996
Rev. 1.2a 8/04
5
PRODUCT DATABOOK 1996/1997
LX1004
1.2V & 2.5V M I C R O P O W E R V O LTA G E R E F E R E N C E S
P
R O D U C T I O N
D
A T A
S
H E E T
C H A R A C T E R I S T I C C U R V E S — LX1004-2.5V
FIGURE 9. — REVERSE CHARACTERISTICS
4.0V
Reverse Current - (µA)
2.0V
VIN
24K
VOUT
0
Input Voltage
TA = 25°C
100
TA = 25°C
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Output Voltage
FIGURE 8. — RESPONSE TIME
10
1
5
0
0.1
0
1.0
Time - (100µs/Div.)
2.0
3.0
4.0
5.0
Reverse Voltage - (V)
FIGURE 10. — FORWARD CHARACTERISTICS
FIGURE 11. — TEMPERATURE DRIFT
1.0
2.52
TA = 25°C
2.515
Reference Voltage - (V)
O
Forward Voltage - (V)
0.8
0.6
0.4
2.51
2.505
2.5
2.495
2.49
0.2
2.485
0
0.001
0.01
0.1
1
Forward Current - (mA)
6
10
100
2.48
-40
20
0
20
40
60
80
100
Temperature - (°C)
Copyright © 1996
Rev. 1.2a 8/04
PRODUCT DATABOOK 1996/1997
LX1004
1.2V & 2.5V M I C R O P O W E R V O LTA G E R E F E R E N C E S
P
R O D U C T I O N
D
A T A
S
H E E T
C H A R A C T E R I S T I C C U R V E S — LX1004-2.5V
FIGURE 12. — NOISE VOLTAGE
FIGURE 13. — REVERSE DYNAMIC IMPEDANCE
TA = 25°C
IR = 100µA
Dynamic Impedance - (Ω)
1800
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(VN) Noise Voltage - (nV/ Hz)
100
1500
1200
900
600
300
10
10
1
IR = 100µA
TA = 25°C
100
1k
10k
0.1
10
100
1k
10k
100k
(f) Frequency - (Hz)
O
(f) Frequency - (Hz)
100k
Copyright © 1996
Rev. 1.2a 8/04
7