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Burr-Brown Corporation |
REF1004
1.2V and 2.5V Micropower
VOLTAGE REFERENCE
FEATURES
q INITIAL ACCURACY:
REF1004-1.2 ±4mV
REF1004-2.5 ±20mV
q MINIMUM OPERATING CURRENT:
REF1004-1.2 10µA
REF1004-2.5 20µA
q EXCELLENT LONG TERM
TEMPERATURE STABILITY
q VERY LOW DYNAMIC IMPEDANCE
q OPERATES UP TO 20mA
q PACKAGE: 8-Lead SOIC
APPLICATIONS
q BATTERY POWERED TEST EQUIPMENT
q PORTABLE MEDICAL INSTRUMENTATION
q PORTABLE COMMUNICATIONS DEVICES
q A/D AND D/A CONVERTERS
q NOTEBOOK AND PALMTOP COMPUTERS
DESCRIPTION
The REF1004-1.2 and REF1004-2.5 are two terminal
bandgap reference diodes designed for high accuracy
with outstanding temperature characteristics at low
operating currents. Prior to the introduction of the
REF1004 Micropower Voltage References, accuracy
and stability specifications could only be attained by
expensive screening of standard devices. The REF1004
is a cost effective solution when reference voltage
accuracy, low power, and long term temperature sta-
bility are required.
REF1004 is a drop-in replacement for the LT1004 as
well as an upgraded replacement of the LM185/385
series references. The REF1004C is characterized for
operation from 0°C to 70°C and the REF1004I is
characterized for operation from –40°C to +85°C.
The REF1004 is offered in an 8-lead Plastic SOIC
package and shipped in anti-static rails or tape and
reel.
Typical Operating Circuit
NC 1
NC 2
NC 3
Anode 4
8 Cathode
7 NC
6 Cathode
5 NC
(Top View)
International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1992 Burr-Brown Corporation
PDS-1172
Printed in U.S.A. October, 1993
SPECIFICATIONS
ELECTRICAL
TA = +25°C unless otherwise noted.
PARAMETER
REFERENCE VOLTAGE
REF1004C(1)
REF1004I(2)
AVERAGE TEMPERATURE
COEFFICIENT
MINIMUM OPERATION
CURRENT(3)
REVERSE BREAKDOWN
VOLTAGE CHANGE WITH
CURRENT
CONDITIONS
IR = 100µA
IMIN ≤ IR ≤ 20mA
IMIN ≤ IR ≤ 1mA
1mA ≤ IR ≤ 20mA
REF1004-1.2
MIN TYP
MAX
1.231
1.229
1.225
1.235
1.235
1.235
1.239
1.239
1.239
REF1004-2.5
MIN
TYP
MAX
2.490
2.487
2.480
2.500
2.500
2.500
2.511
2.511
2.511
20 20
8 10
1
1.5(3)
10
20(3)
12 20
1
1.5(3)
10
20(3)
UNITS
V
ppm/°C
µA
mV
REVERSE DYNAMIC
IMPEDANCE(3)
IR = 100µA
0.2 0.6
0.2 0.6
Ω
WIDE BAND NOISE (RMS)
10Hz ≤ IR ≤ 10kHz
IR = 100µA
60
120 µV
LONG TERM STABILITY
TA = 25°C ± 0.1°C
IR = 100µA
20
20 ppm/KHr
NOTES: (1) This specification applies over the full operating temperature range of 0°C ≤ TA ≤ 70°C. (2) This specification applies over the full operating
temperature range of 40°C ≤ TA ≤ +85°C. (3) Denotes the specifications which apply over the full operating temperature range.
ORDERING INFORMATION
MODEL
REF1004C-1.2
REF1004C-2.5
REF1004I-1.2
REF1004I-2.5
TA
0°C to +70°C
0°C to +70°C
–40°C to +85°C
–40°C to +85°C
VZ
1.2V
2.5V
1.2V
2.5V
NOTE: Available in Tape and Reel, Add –TR to Model Number.
PACKAGE
8-Lead SOIC
8-Lead SOIC
8-Lead SOIC
8-Lead SOIC
ABSOLUTE MAXIMUM RATINGS
Reverse Breakdown Current ........................................................... 30mA
Forward Current ................................................................................ 10mA
Operating Temperature Range
REF1004C ........................................................................ 0°C to +70°C
REF1004I ...................................................................... –40°C to +85°C
Storage Temperature
REF1004C .................................................................. –65°C to +150°C
REF1004I .................................................................... –65°C to +150°C
Lead Temperature (soldering, 10s) ............................................... +300°C
ORDERING INFORMATION
MODEL
REF1004C-1.2
REF1004C-2.5
REF1004I-1.2
REF1004I-2.5
PART MARKING
BBREF0412
BBREF0425
BBREF0412
BBREF0425
PACKAGE INFORMATION
MODEL
PACKAGE
PACKAGE DRAWING
NUMBER(1)
REF1004C-1.2
REF1004C-2.5
REF1004I-1.2
REF1004I-2.5
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
182
182
182
182
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix D of Burr-Brown IC Data Book.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
®
REF1004
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