Microsemi LX1004 1.2v & 2.5v micropower voltage reference Datasheet

LIN D O C #: 1004
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
T
H E
I
N F I N I T E
P
O W E R
O F
I
N N O VA T I O N
P
R O D U C T I O N
DESCRIPTION
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.
D
A T A
S
H E E T
K E Y F E AT U R E S
■ GUARANTEED ±4mV INITIAL ACCURACY
LX1004-1.2
■ GUARANTEED ±20mV INITIAL ACCURACY
LX1004-2.5
■ GUARANTEED 10µA OPERATING CURRENT
■ GUARANTEED TEMPERATURE
PERFORMANCE
■ OPERATES UP TO 20mA
■ VERY LOW DYNAMIC IMPEDANCE
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.
The LX1004 from Linfinity is a pinfor-pin replacement for the LT1004
and LM385 families of voltage
references.
A P P L I C AT I O N S
■
■
■
■
PORTABLE METER REFERENCES
PORTABLE TEST INSTRUMENTS
BATTERY OPERATED SYSTEMS
CURRENT LOOP INSTRUMENTATION
PRODUCT HIGHLIGHT
MICROPOWER REFERENCE
FROM 2 C ELL BATTERY
MICROPOWER REFERENCE FROM
9V BATTERY
2V
9V
200k
39k
2.5V
1.235V
LX1004-1.2V
LX1004-2.5V
PA C K A G E O R D E R I N F O R M AT I O N
TA (°C)
0 to 70
Reference
Initial
Voltage Tolerance
SOIC
DM Plastic
8-pin
TO-92
LP Plastic
3-pin
1.2V
±4mV
LX1004CDM-1.2
LX1004CLP-1.2
2.5V
±20mV
LX1004CDM-2.5
LX1004CLP-2.5
Note: All surface-mount packages are available in Tape & Reel.
Append the letter "T" to part number. (i.e. LX1004CDM-2.5T)
F O R F U R T H E R I N F O R M AT I O N C A L L ( 7 1 4 ) 8 9 8 - 8 1 2 1
Copyright © 1996
Rev. 1.2 6/96
11861 W ESTERN A VENUE , G ARDEN G ROVE , CA. 92841
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
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
8.
2.
7.
3.
4.
DM PACKAGE
(Top View)
2. CATHODE
3. N/C
DM PACKAGE:
165ºC/W
LP PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θ JA
CATHODE
N/C
6. CATHODE
5. N/C
1.
1. ANODE
T H E R MAL DATA
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θ JA
N/C
N/C
N/C
ANODE
165ºC/W
LP PACKAGE
(Top View)
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. 1.2 6/96
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
Average Temperature Coefficient
Minimum Operating Current
Reverse Breakdown Voltage Change
with Current
Reverse Dynamic Impedance
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
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
Units
1.235
1.235
20
1.239
1.245
V
V
ppm/°C
8
10
1
1.5
10
20
0.6
1.5
µA
mV
mV
mV
mV
Ω
Ω
µV
ppm/kHr
0.2
60
20
LX1004 - 2.5
Parameter
Reverse Breakdown Voltage
Average Temperature Coefficient
Minimum Operating Current
Reverse Breakdown Voltage Change
with Current
Reverse Dynamic Impedance
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
LX1004 - 2.5
Min. Typ.
Max.
2.480
2.470
2.500
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
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
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. 1.2 6/96
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)
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
TA = 0 to 70°C
Forward Voltage - (V)
Output Voltage Change - (mV)
0.8
Reverse Voltage - (V)
Temperature - (°C)
12
0.6
10
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. 1.2 6/96
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
700
(VN) Noise Voltage - (nV/ Hz)
Dynamic Impedance - (Ω)
TA = 25°C
100
10
1
600
500
400
300
200
100
0
10
0.1
10
100
1k
10k
IR = 100µA
TA = 25°C
100k
100
(f) Frequency - (Hz)
1k
10k
100k
(f) Frequency - (Hz)
Output Voltage
FIGURE 7. — RESPONSE TIME
1.5V
1.0V
VIN
0.5V
36k
VOUT
Input Voltage
0
5V
0
0
50
100
500
550
Time - (µs)
Copyright © 1996
Rev. 1.2 6/96
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
2.0V
VIN
24K
VOUT
0
Input Voltage
TA = 25°C
100
TA = 25°C
Reverse Current - (µA)
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)
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. 1.2 6/96
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
1800
Dynamic Impedance - (Ω)
(VN) Noise Voltage - (nV/ Hz)
100
1500
1200
900
600
300
10
1
IR = 100µA
TA = 25°C
100
1k
10k
(f) Frequency - (Hz)
Copyright © 1996
Rev. 1.2 6/96
10
100k
0.1
10
100
1k
10k
100k
(f) Frequency - (Hz)
7
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