D ts e t
aa h e
R c e t r lc r nc
o h se Ee to is
Ma u a t r dCo o e t
n fc u e
mp n n s
R c e tr b a d d c mp n ns ae
o h se rn e
o oet r
ma ua trd u ig ete dewaes
n fcue sn i r i/ fr
h
p rh s d f m te oiia s p l r
uc a e r
o h r n l u pi s
g
e
o R c e tr waes rce td f m
r o h se
fr e rae r
o
te oiia I. Al rce t n ae
h
r nl P
g
l e rai s r
o
d n wi tea p o a o teOC
o e t h p rv l f h
h
M.
P r aetse u igoiia fcoy
at r e td sn r n la tr
s
g
ts p o rmso R c e tr e eo e
e t rga
r o h se d v lp d
ts s lt n t g aa te p o u t
e t oui s o u rne
o
rd c
me t o e c e teOC d t s e t
es r x e d h
M aa h e.
Qu l yOv riw
ai
t
e ve
• IO- 0 1
S 90
•A 92 cr ct n
S 1 0 et ai
i
o
• Qu l e Ma ua trr Ls (
ai d
n fcues it QML MI- R -
) LP F
385
53
•C a sQ Mitr
ls
lay
i
•C a sVS a eL v l
ls
p c ee
• Qu l e S p l r Ls o D sr uos( L )
ai d u pi s it f it b tr QS D
e
i
•R c e trsacic l u pir oD A a d
o h se i
r ia s p l t L n
t
e
me t aln u t a dD A sa d r s
es lid sr n L tn ad .
y
R c e tr lcrnc , L i c mmi e t
o h se Ee t is L C s o
o
tdo
t
s p ligp o u t ta s t f c so r x e t-
u pyn rd cs h t ai y u tme e p ca
s
t n fr u lya daee u loto eoiial
i s o q ai n r q a t h s r n l
o
t
g
y
s p l db id sr ma ua trr.
u pi
e yn ut
y n fcues
T eoiia ma ua trr d ts e t c o a yn ti d c me t e e t tep r r n e
h r n l n fcue’ aa h e a c mp n ig hs o u n r cs h ef ma c
g
s
o
a ds e ic t n o teR c e tr n fcue v rino ti d vc . o h se Ee t n
n p c ai s f h o h se ma ua trd eso f hs e ie R c e tr lcr -
o
o
isg aa te tep r r n eo i s mio d co p o u t t teoiia OE s e ic -
c u rne s h ef ma c ft e c n u tr rd cs o h r n l M p c a
o
s
g
t n .T pc lv le aefr eee c p r o e o l. eti mii m o ma i m rt g
i s ‘y ia’ au s r o rfrn e up s s ny C r n nmu
o
a
r xmu ai s
n
ma b b s do p o u t h rceiain d sg , i lt n o s mpetsig
y e a e n rd c c aa tr t , e in smuai , r a l e t .
z o
o
n
© 2 1 R cetr l t n s LC Al i t R sre 0 1 2 1
0 3 ohs E cr i , L . lRg s eevd 7 1 0 3
e e oc
h
T l r m r, l s v iw wrcl . m
o e n oe p ae it w . e c o
a
e
s
o ec
LT1004 1.2, LT1004 2.5
MICROPOWER INTEGRATED VOLTAGE REFERENCES
SLVS022L − JANUARY 1989 − REVISED OCTOBER 2006
D
Initial Accuracy
D
D
D
D
−
±4
mV for LT1004-1.2
−
±20
mV for LT1004-2.5
Micropower Operation
Operates up to 20 mA
Very Low Reference Impedance
Applications:
− Portable Meter Reference
− Portable Test Instruments
− Battery-Operated Systems
− Current-Loop Instrumentation
D OR PW PACKAGE
(TOP VIEW)
NC
NC
NC
ANODE
1
2
3
4
8
7
6
5
CATHODE
NC
CATHODE
NC
NC − No internal connection
Terminals 6 and 8 are internally connected.
LP PACKAGE
(TOP VIEW)
description/ordering information
The LT1004 micropower voltage reference is a
two-terminal band-gap reference diode designed
to provide high accuracy and excellent
temperature characteristics at very low operating
currents. Optimizing the key parameters in the
design, processing, and testing of the device
results in specifications previously attainable only
with selected units.
ANODE
CATHODE
NC
NC − No internal connection
The LT1004 is a pin-for-pin replacement for the LM285 and LM385 series of references, with improved
specifications. It is an excellent device for use in systems in which accuracy previously was attained at the
expense of power consumption and trimming.
The LT1004C is characterized for operation from 0°C to 70°C. The LT1004I is characterized for operation from
−40°C to 85°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
2006, Texas Instruments Incorporated
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
1
LT1004 1.2, LT1004 2.5
MICROPOWER INTEGRATED VOLTAGE REFERENCES
SLVS022L − JANUARY 1989 − REVISED OCTOBER 2006
description/ordering information (continued)
ORDERING INFORMATION
TA
VZ
TYP
SOIC (D)
PACKAGE†
Tube of 75
Reel of 2500
Ammo of 2000,
formed lead
1.2 V
TO-226 / TO-92 (LP)
Reel of 2000,
formed lead
Bulk of 1000,
straight lead
Tube of 150
TSSOP (PW)
0°C to 70°C
SOIC (D)
Reel of 2000
Tube of 75
Reel of 2500
Ammo of 2000,
formed lead
2.5 V
TO-226 / TO-92 (LP)
Reel of 2000,
formed lead
Bulk of 1000,
straight lead
Tube of 150
TSSOP (PW)
SOIC (D)
Reel of 2000
Tube of 75
Reel of 2500
Ammo of 2000,
formed lead
1.2 V
−40°C to 85°C
TSSOP (PW)
SOIC (D)
2.5 V
TSSOP (PW)
TO-226 / TO-92 (LP)
Reel of 2000,
formed lead
Bulk of 1000,
straight lead
Tube of 150
Reel of 2000
Tube of 75
Reel of 2500
Tube of 150
Reel of 2000
ORDERABLE
PART NUMBER
LT1004CD-1-2
LT1004CDR-1-2
LT1004CLPM-1-2
LT1004CLPR-1-2
LT1004CLP-1-2
LT1004CPW-1-2
LT1004CPWR-1-2
LT1004CD-2-5
LT1004CDR-2-5
LT1004CLPM-2-5
LT1004CLPR-2-5
LT1004CLP-2-5
LT1004CPW-2-5
LT1004CPWR-2-5
LT1004ID-1-2
LT1004IDR-1-2
LT1004ILPM-1-2
LT1004ILPR-1-2
LT1004ILP-1-2
LT1004IPW-1-2
LT1004IPWR-1-2
LT1004ID-2-5
LT1004IDR-2-5
LT1004IPW-2-5
LT1004IPWR-2-5
4I-25
4I-25
4I-12
1004I12
4I-12
4C-25
1004C25
4C-25
4C-12
1004C12
4C-12
TOP-SIDE
MARKING
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
symbol
ANODE
(A)
CATHODE
(K)
2
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
LT1004 1.2, LT1004 2.5
MICROPOWER INTEGRATED VOLTAGE REFERENCES
SLVS022L − JANUARY 1989 − REVISED OCTOBER 2006
schematic
LT1004-1.2
CATHODE
7.5 kΩ
Q3
Q4
Q2
Q10
Q1
20 pF
20 pF
600 kΩ
500 kΩ
Q5
Q9
300 kΩ
Q8
50 kΩ
Q11
Q12
200 kΩ
500
Ω
Q6
Q7
Q13
60 kΩ
ANODE
LT1004-2.5
CATHODE
7.5 kΩ
Q12
200 kΩ
Q3
Q4
Q2
Q11
Q10
Q1
20 pF
20 pF
600 kΩ
500 kΩ
Q5
Q9
50 kΩ
500 kΩ
300 kΩ
Q8
500
Ω
Q6
Q7
Q13
60 kΩ
500 kΩ
ANODE
NOTE A: All component values shown are nominal.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
3
LT1004 1.2, LT1004 2.5
MICROPOWER INTEGRATED VOLTAGE REFERENCES
SLVS022L − JANUARY 1989 − REVISED OCTOBER 2006
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Reverse current, I
R
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA
Forward current, I
F
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA
Package thermal impedance,
θ
JA
(see Notes 1 and 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W
LP package . . . . . . . . . . . . . . . . . . . . . . . . . . 140°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . 149°C/W
Operating virtual junction temperature, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. Maximum power dissipation is a function of TJ(max),
θ
JA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) − TA)/
θ
JA. Operating at the absolute maximum TJ of 150°C can affect reliability.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions
MIN
TA
Operating free-air temperature
LT1004C
LT1004I
0
−40
MAX
70
85
UNIT
°C
electrical characteristics at specified free-air temperature
PARAMETER
TEST
CONDITIONS
TA‡
25°C
VZ
Reference voltage
Average
temperature coefficient
of reference voltage§
Change in
reference voltage
with current
Long-term change
in reference voltage
Minimum
reference current
Reference impedance
Broadband
noise voltage
IZ = 100
µA
A
IZ = 100
µA,
f = 10 Hz to 10 kHz
IZ = 100
µA
IZ = 10
µA
IZ = 20
µA
IZ = IZ(min) to 1 mA
IZ = 1 mA to 20 mA
IZ = 100
µA
25°C
20
25°C
∆V
Z
Full range
25°C
Full range
25°C
Full range
25°C
Full range
25°C
60
20
8
0.2
10
0.6
1.5
120
1
1.5
10
20
20
12
0.2
20
0.6
1.5
1
1.5
10
20
ppm/khr
µA
Ω
µV
mV
Full
range
LT1004C
LT1004I
LT1004-1.2
MIN
1.231
1.225
1.225
20
ppm/°C
TYP
1.235
MAX
1.239
1.245
1.245
LT1004-2.5
MIN
2.48
2.47
2.47
TYP
2.5
MAX
2.52
2.53
2.53
V
UNIT
a
V
Z
∆V
Z/∆t
IZ(min)
zz
Vn
‡ Full range is 0°C to 70°C for the LT1004C and −40°C to 85°C for the LT1004I.
§ The average temperature coefficient of reference voltage is defined as the total change in reference voltage divided by the specified temperature
range.
4
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
京公网安备 11010802033920号
EEWORLD
