Advanced
Monolithic
Systems
FEATURES
•
Tight Output Voltage Tolerance
•
Low Output Noise
•
Operating Current 60µA to 100mA
µ
•
Low Dynamic Impedance
•
Low Temperature Coefficient
•
Available in the sub-miniature SOT-23 Package
•
2.5V Device ( AMS4040) also available
AMS4041
MICROPOWER SHUNT VOLTAGE REFERENCE
APPLICATIONS
•
Battery Powered Systems
•
Instrumentation
•
Energy Management
•
Automotive
•
Precision Audio Components
•
Product Testing
•
Data Acquisition Systems
GENERAL DESCRIPTION
The AMS4041 is a two-terminal micropower band-gap voltage reference diode featuring a very low dynamic impedance and
good temperature coefficient, operating over a 60µA to 100mA current range. On-chip trimming is used to provide tight
voltage tolerance. Since the AMS4041 band-gap reference uses only transistors and resistors, low noise and good long term
stability result. The wide dynamic operating range allows its use with widely varying supplies with excellent regulation. The
extremely low power drain of the AMS4041 makes these reference diodes useful for micropower circuitry. These voltage
references can be used to make portable meters, regulators or general purpose analog circuitry with battery life approaching
shelf life.
The AMS4041 is operational in the full industrial temperature range of -40°C to 85°and is available in small space saving
TO-92, SO-8, SOT-89 and SOT-23 packages.
ORDERING INFORMATION
:
TOL.
±0.25%
±0.5%
±1.0%
TO-92
AMS4041AN
AMS4041BN
AMS4041CN
PACKAGE TYPE
8 LEAD SOIC
AMS4041AS
AMS4041BS
AMS4041CS
SOT-89
AMS4041AL
AMS4041BL
AMS4041CL
3 LEAD SOT-23
AMS4041AM
AMS4041BM
AMS4041CM
OPERATING
TEMP. RANGE
-40 to +85° C
-40 to +85° C
-40 to +85° C
PIN CONNECTIONS
TO-92
Plastic Package (N)
N/C
3
+
2
-
1
8L SOIC
SO Package (S)
N/C
N/C
N/C
-
1
2
3
4
8
7
6
5
+
N/C
N/C
SOT-89
(L)
3L SOT-23
(M)
3 *
1
N/C
2
3
1
+
2
-
*This pin must be left floating
or connected to pin 2
Bottom View
Top View
Top View
Top View
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS4041
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Reverse Current
Forward Current
Storage temperature
Lead Temperature
TO-92 package (Soldering 10 sec.)
SO-8 and SOT-23 packages:
Vapor phase (60 sec)
Infrared (15 sec.)
SOT-89 package (Soldering 10 sec.)
100mA
10mA
-65°C to +150°C
265°C
215°C
220°C
265°C
Internal Power Dissipation (P
D
)
TO-92 Package
SO-8 Package
SOT-89 Package
SOT-23 Package
Thermal Resistance (θ
JA
)
TO-92 Package
SO-8 Package
SOT-89 Package
SOT-23 Package
0.78W
0.71W
0.91W
0.28W
160°C/W
175°C/W
110°C/W
410°C/W
Note1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. For guaranteed specifications and test conditions, see the
Electrical Characteristics
.
The guaranteed specifications apply only for the test conditions listed.
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at I
R
=100
µA
and T
A
= +25°C unless otherwise specified.
Parameter
Reverse Breakdown
Voltage
Deviation of Reverse
Breakdown Voltage over
Temperature
Reverse Breakdown
Voltage Change with
Operating Current
Change
Reverse Breakdown
Voltage Long Term
Stability
Wide Band Noise
Reverse Dynamic
Impedance
Minimum Operating
Current
T
A
= Full Range
I
RMIN
≤
I
R
≤
1mA
1mA
≤
I
R
≤
15mA
Conditions
AMS4041A
Min
Typ
Max
1.222
1.225
1.228
AMS4041B
Min
Typ
Max
1.219
1.225
1.231
AMS4041C
Min
Typ
Max
1.213
1.225
1.237
Units
V
8.0
17
8.0
17
8.0
25
mV
0.7
1.5
2.0
0.7
1.5
2.0
0.7
2.0
2.5
mV
4.0
6.0
8.0
2.5
6.0
8.0
2.5
8.0
10.0
mV
T
A
=25°C±.1°C
T = 1000 Hr
10HZ
≤
f
≤
10kHz
I
R
= 1mA, f = 120Hz,
I
AC
= 0.1I
R
120
120
120
ppm
µV
rms
2.0
80
100
Ω
µA
20
0.5
60
1.5
80
100
20
0. 5
60
1.5
80
100
20
0.5
60
Parameters identified with
boldface type
apply at temperature extremes. All other numbers apply at T
A
= T
J
= 25°C.
TYPICAL APPLICATIONS
Shunt Regulator
V
S
R
S
V
R
AMS4041
I
Q
+ I
L
I
L
I
Q
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS4041
TYPICAL APPLICATIONS
Precision 1µ A to 1mA Current Sources
µ
AMS4041
12V
AMS4041
R1
20k
2
-
8
1/2
LMC6062
4
R1
20k
1
2
3
I
OUT
*
-1.0V TO -12V
+
8
1/2
LMC6062
3
4
+
I
OUT
*
1.0V TO 12V
-
1
R2
R2
-15V
I
OUT
=1.2V/R2
Programmable Current Source
12V
30k
12
A
OUT
LF13006
LF13007
DIGITAL
CONTROL
AMS4041
+12V
0.1µF
2
INPUT
ANA
GND
7
8
+
1/2
LMC6062
-
6
3
+
1
123Ω,
0.5%
I
OUT
5
1/2
LMC6062
2
4
-
I
OUT
= 1.2V/123Ω(1/gain set #)
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS4041
START-UP CHARACTERISTICS
R
S
V
IN
1Hz rate
AMS4041
V
R
R
S
= 30 k
V
IN
(V)
AMS4041
5
0
T
J
= 25°C
Test circuit
3
V
R
(V)
2
1
0
0
20
40
60
80
RESPONSE TIME (µs)
TYPICAL PERFORMANCE CHARACTERISTICS
Temperature Drift for Different
Average Temperature Coefficient
+0.5
+0.4
+0.3
V
R
CHANGE (%)
+0.2
+0.1
0
-0.1
-0.2
-0.3
-51ppm/° C
-22ppm/° C
+12ppm/° C
I
R
= 150
µ
A
Reverse Characteristics and
Minimum Operating Current
100
T
J
=25° C
Noise Voltage vs Frequency
1000
I
R
= 200
µ
A
T
J
=25° C
REVERSE CURRENT (µA)
80
60
40
20
0
NOISE (mV/√Hz)
0.4
1.2
1.6
0.8
REVERSE VOLTAGE (V)
800
600
400
200
0
0
2.0
1
10
1k
10k
100
FREQUENCY (Hz)
100k
-0.4
-0.5
-40 -20
0
20 40 60 80
TEMPERATURE ( ° C)
100
Ouput Impedance vs Frequency
1k
I
R
= 1mA
T
J
=25° C,
∆I
R
= 0.1I
R
Ouput Impedance vs Frequency
1k
I
R
= 150µA
T
J
=25° C,
∆I
R
= 0.1I
R
C
L
= 0
IMPEDANCE (Ω)
C
L
= 0
IMPEDANCE (Ω)
100
100
10
C
L
= 1
µF
TANTALUM
10
C
L
= 1µF
TANTALUM
1
XC
L
1
XC
L
0.1
100
1k
10k
100k
FREQUENCY (Hz)
1M
0.1
100
1k
10k
100k
FREQUENCY (Hz)
1M
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS4041
PACKAGE DIMENSIONS
inches (millimeters) unless otherwise noted.
3 LEAD TO-92 PLASTIC PACKAGE (N)
0.060±0.005
(1.524±0.127)
DIA
0.180±0.005
(4.572±0.127)
0.060±0.010
(1.524±0.254)
0.140±0.010
(3.556±0.127)
0.180±0.005
(4.572±0.127)
0.90
(2.286)
NOM
5° NOM
0.500
(12.70)
MIN
10°
NOM
0.050
(1.270)
MAX
UNCONTROLLED
LEAD DIMENSIONS
0.050±0.005
(1.270±0.127)
0.016±0.003
(0.406±0.076)
0.015±0.002
(0.381±0.051)
N (TO-92 ) AMS DRW# 042391
8 LEAD SOIC PLASTIC PACKAGE (S)
0.189-0.197*
(4.801-5.004)
8
7
6
5
0.228-0.244
(5.791-6.197)
0.150-0.157**
(3.810-3.988)
1
2
3
4
0.053-0.069
(1.346-1.752)
0.004-0.010
(0.101-0.254)
0.008-0.010
(0.203-0.254)
0.010-0.020
x 45°
(0.254-0.508)
0°-8° TYP
0.014-0.019
(0.355-0.483)
0.050
(1.270)
TYP
0.016-0.050
(0.406-1.270)
S (SO-8 ) AMS DRW# 042293
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
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