P
RODUCTION
D
ATA
S
HEET
T
HE
I
NFINITE
P
OWER OF
I
NNOVATION
Not Recommended For New Design
L
IN
F
INITY
M
ICROELECTRONICS
I
NC
.
11861
W
ESTERN
A
VENUE
,
G
ARDEN
G
ROVE
,
CA.
92841,
714-898-8121,
F
AX
:
714-893-2570
1
Copyright © 1996
Rev. 1.2a,2005-03-08
LX1004
1.2V & 2.5V MICROPOWER
V
OLTAGE REFERENCE
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.
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 pin for-pin
replacement for the LT1004 and LM385 families
of voltage references.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATURES
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
APPLICATIONS
Portable Meter References
Portable Test Instruments
Battery Operated Systems
Current Loop Instrumentation
PRODUCT HIGHLIGHT
M
ICROPOWER
R
EFERENCE
F
ROM
2
C
ELL
B
ATTERY
39K
LM1004-1.2
2V
1.235V
M
ICROPOWER
R
EFERENCE
F
ROM
9V
B
ATTERY
200K
LM1004-2.5
9V
2.5V
PACKAGE ORDER INFO
DM
Plastic SOIC
8-Pin
LP
Plastic TO-92
3-Pin
T
A
(°C) Reference
Voltage Initial
Tolerance
RoHS Compliant / Pb-free
Transition DC: 0440
RoHS Compliant / Pb-free
Transition DC: 0509
1.2V ±4mV LX1004CDM-1.2 LX1004CLP-1.2
0 to 70 2.5V ±20mA LX1004CDM-2.5 LX1004CLP-2.5
Note: Available in Tape & Reel. Append the letters “TR” to the part number (i.e. LX1004CDM-2.5-TR).
1.2V & 2.5V M
ICROPOWER
V
OLTAGE
R
EFERENCES
LX1004
PRODUCT DATABOOK 1996/1997
Copyright © 1996
Rev. 1.2a 8/04
2
PRODUCTION DATA SHEET
ABSOLUTE MAXIMUM RATINGS (Note 1) PACKAGE PIN OUTS
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
THERMAL DATA
DM PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θθ
θθ
θJA 165ºC/W
LP PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θθ
θθ
θJA 165ºC/W
The θJA numbers are guidelines for the thermal performance of the device/pc-board system.
All of the above assume no ambient airflow.
1. ANODE
2. CATHODE
3. N/C
LP PACKAGE
(Top View)
8.
7.
6.
5.
1.
2.
3 .
4.
N/C
N/C
N/C
ANODE
CATHODE
N/C
CATHODE
N/C
DM PACKAGE
(Top View)
Pb-free / RoHS Peak Package Solder Reflow Temp (40 second max. exposure)..............260°C (+0, -5)
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 100% Pb-free / RoHS Matte Tin Lead Finish
1.2V & 2.5V M
ICROPOWER
V
OLTAGE
R
EFERENCES
LX1004
PRODUCT DATABOOK 1996/1997
3
Copyright © 1996
Rev. 1.2a 8/04
PRODUCTION DATA SHEET
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply to TA = 25ºC for LX1004C. Typ. number represents TA = 25ºC value.
Parameter
Symbol
Test Conditions Units
LX1004 - 1.2
Min. Typ. Max.
1.231 1.235 1.239 V
1.225 1.235 1.245 V
20 ppm/°C
810µA
1mV
1.5 mV
10 mV
20 mV
0.2 0.6 Ω
1.5 Ω
60 µV
20 ppm/kHr
Reverse Breakdown Voltage VZIR = 100µA, TA = 25°C
0°≤ TA ≤ 70°C
Average Temperature Coefficient ∆VZIMIN
≤ IR ≤ 20mA
∆Temp
Minimum Operating Current IMIN 0°≤ TA ≤ 70°C
Reverse Breakdown Voltage Change IMIN
≤ IR ≤ 1mA, TA = 25°C
with Current ∆VZIMIN
≤ IR ≤ 1mA, 0° ≤ TA ≤ 70°C
∆IR1mA ≤ IR ≤ 20mA, TA = 25°C
1mA ≤ IR ≤ 20mA, 0° ≤ TA ≤ 70°C
Reverse Dynamic Impedance rzIR = 100µA, TA = 25°C
IR = 100µA, 0° ≤ TA ≤ 70°C
Wide Band Noise (RMS) enIR = 100µA; 10Hz ≤ f ≤ 10kHz
Long Term Stability ∆VZIR = 100µA; TA = 25°C ± 0.1°C
∆Time
GRAPH / CURVE INDEX
Characteristic Curves — LX1004-1.2V
FIGURE #
1. TEMPERATURE DRIFT
2. REVERSE CHARACTERISTICS
3. REVERSE VOLTAGE CHANGE
4. FORWARD CHARACTERISTICS
5. REVERSE DYNAMIC IMPEDANCE
6. NOISE VOLTAGE
7. RESPONSE TIME
Parameter
Symbol
Test Conditions Units
LX1004 - 2.5
Min. Typ. Max.
2.480 2.500 2.520 V
2.470 2.530 V
20 ppm/°C
12 20 µA
1mV
1.5 mV
10 mV
20 mV
0.2 0.6 Ω
1.5 Ω
120 µV
20 ppm/kHr
Reverse Breakdown Voltage VZIR = 100µA, TA = 25°C
0°≤ TA ≤ 70°C
Average Temperature Coefficient ∆VZIMIN
≤ IR ≤ 20mA
∆Temp
Minimum Operating Current IMIN 0°≤ TA ≤ 70°C
Reverse Breakdown Voltage Change IMIN
≤ IR ≤ 1mA, TA = 25°C
with Current ∆VZIMIN
≤ IR ≤ 1mA, 0° ≤ TA ≤ 70°C
∆IR1mA ≤ IR ≤ 20mA, TA = 25°C
1mA ≤ IR ≤ 20mA, 0° ≤ TA ≤ 70°C
Reverse Dynamic Impedance rzIR = 100µA, TA = 25°C
IR = 100µA, 0° ≤ TA ≤ 70°C
Wide Band Noise (RMS) enIR = 100µA; 10Hz ≤ f ≤ 10kHz
Long Term Stability ∆VZIR = 100µA; TA = 25°C ± 0.1°C
∆Time
LX1004 - 1.2
LX1004 - 2.5
Characteristic Curves — LX1004-2.5V
FIGURE #
1. RESPONSE TIME
2. REVERSE CHARACTERISTICS
3. FORWARD CHARACTERISTICS
4. TEMPERATURE DRIFT
5. NOISE VOLTAGE
6. REVERSE DYNAMIC IMPEDANCE
1.2V & 2.5V M
ICROPOWER
V
OLTAGE
R
EFERENCES
LX1004
PRODUCT DATABOOK 1996/1997
Copyright © 1996
Rev. 1.2a 8/04
4
PRODUCTION DATA SHEET
CHARACTERISTIC CURVES — LX1004-1.2V
FIGURE 2. — REVERSE CHARACTERISTICS
FIGURE 3. — REVERSE VOLTAGE CHANGE FIGURE 4. — FORWARD CHARACTERISTICS
FIGURE 1. — TEMPERATURE DRIFT
Temperature - (°C)
Reference Voltage - (V)
1.226
02030406070
1.23
1.236
1.242
1.232
1.24
10 50
1.228
1.234
1.238
I
R
= 100µA
Reverse Voltage - (V)
Reverse Current - (µA)
0.1
0 0.2 0.4 0.6 0.8 1.0
1
10
100
T
A
= 0 to 70°C
1.2 1.4
Reverse Current - (mA)
Output Voltage Change - (mV)
-4
0.01 0.1 1 10 100
0
6
12
2
10
-2
4
8
14
16
T
A
= 0 to 70°C
0
Forward Current - (mA)
Forward Voltage - (V)
0.4
0.01 0.1 110 100
0.8
1.2
T
A
= 25°C
1.2V & 2.5V M
ICROPOWER
V
OLTAGE
R
EFERENCES
LX1004
PRODUCT DATABOOK 1996/1997
5
Copyright © 1996
Rev. 1.2a 8/04
PRODUCTION DATA SHEET
CHARACTERISTIC CURVES — LX1004-1.2V
FIGURE 6. — NOISE VOLTAGE
FIGURE 7. — RESPONSE TIME
FIGURE 5. — REVERSE DYNAMIC IMPEDANCE
0.1
(f) Frequency - (Hz)
Dynamic Impedance - (Ω)
1
10 100 1k 10k 100k
10
1000
T
A
= 25°C
100
300
(f) Frequency - (Hz)
(V
N
) Noise Voltage - (nV/ Hz)
400
10 100 1k 10k 100k
700
800
500
600
I
R
= 100µA
T
A
= 25°C
200
100
0
Time - (µs)
Output Voltage
0
5V
0
1.0V
Input Voltage
0.5V
1.5V
V
IN
V
OUT
36k
0 50 100 500 550
1.2V & 2.5V M
ICROPOWER
V
OLTAGE
R
EFERENCES
LX1004
PRODUCT DATABOOK 1996/1997
Copyright © 1996
Rev. 1.2a 8/04
6
PRODUCTION DATA SHEET
CHARACTERISTIC CURVES — LX1004-2.5V
FIGURE 9. — REVERSE CHARACTERISTICS
FIGURE 10. — FORWARD CHARACTERISTICS FIGURE 11. — TEMPERATURE DRIFT
FIGURE 8. — RESPONSE TIME
Time -
(
100µs/Div.
)
Output Voltage
0
5
0
2.0V
4.0V
Input Voltage
T
A
= 25°C
V
IN
V
OUT
24K
Reverse Voltage - (V)
Reverse Current - (µA)
0.1
0 1.0 2.0 3.0 4.0 5.0
1
10
100
T
A
= 25°C
Forward Current - (mA)
Forward Voltage - (V)
0
0.001 0.01 0.1 1 10 100
0.2
0.6
1.0
T
A
= 25°C
0.4
0.8
Temperature - (°C)
Reference Voltage - (V)
2.48
-40 0 20 40 80 100
2.49
2.505
2.52
2.495
2.515
20 60
2.485
2.5
2.51
1.2V & 2.5V M
ICROPOWER
V
OLTAGE
R
EFERENCES
LX1004
PRODUCT DATABOOK 1996/1997
7
Copyright © 1996
Rev. 1.2a 8/04
PRODUCTION DATA SHEET
CHARACTERISTIC CURVES — LX1004-2.5V
FIGURE 13. — REVERSE DYNAMIC IMPEDANCE
FIGURE 12. — NOISE VOLTAGE
300
(f) Frequency - (Hz)
(V
N
) Noise Voltage - (nV/ Hz)
600
10 100 1k 10k 100k
1500
1800
900
1200
I
R
= 100µA
T
A
= 25°C
(f) Frequency - (Hz)
Dynamic Impedance - (Ω)
0.1
10 100 1k 100k
10
100
1
10k
T
A
= 25°C
I
R
= 100µA
