ISL60002CIB825Z [RENESAS]

1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.5V, PDSO8, PLASTIC, SOIC-8;
ISL60002CIB825Z
型号: ISL60002CIB825Z
厂家: RENESAS TECHNOLOGY CORP    RENESAS TECHNOLOGY CORP
描述:

1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.5V, PDSO8, PLASTIC, SOIC-8

光电二极管 输出元件
文件: 总31页 (文件大小:950K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
ISL60002  
®
Data Sheet  
January 5, 2006  
FN8082.3  
Precision Low Power FGA™ Voltage  
References  
The ISL60002 FGA™ voltage references are very high  
precision analog voltage references fabricated in Intersil's  
proprietary Floating Gate Analog technology and feature low  
supply voltage operation at ultra-low 400nA operating  
current.  
Features  
• Reference Voltages . .1.024V, 1.2V, 1.25V, 1.8V, 2.5V and  
3.3V  
• Absolute Initial Accuracy Options  
• . . . . . . . . . . . . . . . . . . . . . . ±1.0mV, ±2.5mV, and ±5.0mV  
• Supply Voltage Range  
- ISL60002-10, -11, -12, -18, -20, -25 . . . . . . 2.7V to 5.5V  
- ISL60002-33. . . . . . . . . . . . . . . . . . . . . . . . 3.5V to 5.5V  
Additional features include guaranteed initial accuracy as  
low as ±1.0mV, @ 20ppm/°C temperature coefficient and  
long-term stability of <<10ppm/1kHrs. The initial accuracy  
and thermal stability performance of the ISL60002 family  
plus the low supply voltage and 400nA power consumption  
eliminates the need to compromise thermal stability for  
reduced power consumption making it an ideal companion to  
high resolution, low power data conversion systems.  
• Ultra-Low Supply Current. . . . . . . . . . . . . . . . . .350nA typ  
• Low 20ppm/°C Temperature Coefficient  
• 10ppm/1kHrs. Long Term Stability  
• I  
• I  
and I  
= 7mA  
SOURCE  
SINK  
and I  
= 20mA for ISL60002-33 only  
SOURCE  
SINK  
• ESD Protection. . . . . . . . . . . . . 5kV (Human Body Model)  
• Standard 8 Ld SOIC and 3 Ld SOT-23 Packaging  
• operating Temperature Range  
- ISL60002-10, -11, -12, -18, -20, -25 . . . .-40°C to +85°C  
- ISL60002-33. . . . . . . . . . . . . . . . . . . . .-40°C to +105°C  
• Pb-Free Plus Anneal Available (RoHS Compliant)  
Applications  
• High Resolution A/Ds and D/As  
• Digital Meters  
• Bar Code Scanners  
• Mobile Communications  
• PDA’s and Notebooks  
• Medical Systems  
Typical Application  
V
= +3.0V  
IN  
0.1µF  
10µF  
V
IN  
V
OUT  
0.001µF*  
ISL60002  
GND  
REF IN  
ENABLE  
SCK  
SDAT  
Serial  
Bus  
16 TO 24-BIT  
A/D CONVERTER  
*Also see Figure 103 in Applications Information.  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
FGA is a trademark of Intersil Corporation. Copyright Intersil Americas Inc. 2004-2006. All Rights Reserved  
All other trademarks mentioned are the property of their respective owners.  
ISL60002  
Table of Contents  
Typical Application......................................................................................................................................................................... 1  
Pinouts .......................................................................................................................................................................................... 3  
Pin Descriptions ............................................................................................................................................................................ 3  
Ordering Information ..................................................................................................................................................................... 3  
Absolute Maximum Ratings........................................................................................................................................................... 5  
Electrical Specifications  
ISL60002-10, VOUT = 1.024V ................................................................................................................................................. 5  
ISL60002-11, V  
ISL60002-12, V  
ISL60002-18, V  
ISL60002-20, V  
ISL60002-25, V  
ISL60002-33, V  
= 1.200V .................................................................................................................................................. 5  
= 1.250V .................................................................................................................................................. 5  
= 1.800V .................................................................................................................................................. 6  
= 2.048V .................................................................................................................................................. 6  
= 2.500V .................................................................................................................................................. 6  
= 3.300V .................................................................................................................................................. 6  
OUT  
OUT  
OUT  
OUT  
OUT  
OUT  
Common Electrical Specifications  
ISL60002-10, -11, -12, -18, -20, and -25 .................................................................................................................................. 7  
Typical Performance Characteristic Curves  
ISL60002, V  
ISL60002, V  
ISL60002, V  
ISL60002, V  
ISL60002, V  
ISL60002, V  
ISL60002, V  
= 1.024V ....................................................................................................................................................... 8  
= 1.20V ......................................................................................................................................................... 10  
= 1.25V ......................................................................................................................................................... 13  
= 1.8V ........................................................................................................................................................... 16  
= 2.048V ....................................................................................................................................................... 18  
= 2.50V ......................................................................................................................................................... 21  
= 3.3V ........................................................................................................................................................... 24  
OUT  
OUT  
OUT  
OUT  
OUT  
OUT  
OUT  
Applications Information................................................................................................................................................................ 27  
Typical Application Circuits............................................................................................................................................................ 29  
Packaging Information................................................................................................................................................................... 30  
2
ISL60002  
Pinouts  
ISL60002 (SOT-23-3)  
ISL60002 (SOIC-8)  
TOP VIEW  
TOP VIEW  
V
1
GND  
1
2
3
4
8
7
6
5
DNC  
DNC  
IN  
V
IN  
3
GND  
DNC  
GND  
V
OUT  
V
2
OUT  
DNC  
Pin Descriptions  
PIN NAME  
DESCRIPTION  
GND  
Ground Connection  
V
Power Supply Input Connection  
IN  
V
Voltage Reference Output Connection  
OUT  
DNC  
Do Not Connect; Internal Connection – Must Be Left Floating  
Ordering Information  
PART  
TEMP.  
PART NUMBER  
3 LD SOT-23  
MARKING  
V
(V)  
GRADE  
RANGE (°C)  
PACKAGE  
OUT  
ISL60002BIH310Z-TK (Note)  
ISL60002CIH310Z-TK (Note)  
ISL60002DIH310Z-TK (Note)  
ISL60002BIH311Z-TK (Note)  
ISL60002CIH311Z-TK (Note)  
ISL60002DIH311Z-TK (Note)  
ISL60002BIH312-TK  
1.024  
1.024  
1.024  
1.200  
1.200  
1.200  
1.250  
1.250  
1.250  
1.250  
1.250  
1.250  
1.800  
1.800  
1.800  
2.048  
2.048  
2.048  
2.500  
2.500  
2.500  
2.500  
2.500  
±1.0mV, 20ppm/°C  
±2.5mV, 20ppm/°C  
±5.0mV, 20ppm/°C  
±1.0mV, 20ppm/°C  
±2.5mV, 20ppm/°C  
±5.0mV, 20ppm/°C  
±1.0mV, 20ppm/°C  
±1.0mV, 20ppm/°C  
±2.5mV, 20ppm/°C  
±2.5mV, 20ppm/°C  
±5.0mV, 20ppm/°C  
±5.0mV, 20ppm/°C  
±1.0mV, 20ppm/°C  
±2.5mV, 20ppm/°C  
±5.0mV, 20ppm/°C  
±1.0mV, 20ppm/°C  
±2.5mV, 20ppm/°C  
±5.0mV, 20ppm/°C  
±1.0mV, 20ppm/°C  
±1.0mV, 20ppm/°C  
±2.5mV, 20ppm/°C  
±2.5mV, 20ppm/°C  
±5.0mV, 20ppm/°C  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23  
APH  
AOH  
AOY  
AIL  
ISL60002BIH312Z-TK (Note)  
ISL60002CIH312-TK  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23  
AIN  
AIP  
ISL60002CIH312Z-TK (Note)  
ISL60002DIH312-TK  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23  
ISL60002DIH312Z-TK (Note)  
ISL60002BIH318Z-TK (Note)  
ISL60002CIH318Z-TK (Note)  
ISL60002DIH318Z-TK (Note)  
ISL60002BIH320Z-TK (Note)  
ISL60002CIH320Z-TK (Note)  
ISL60002DIH320Z-TK (Note)  
ISL60002BIH325-TK  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23  
AIK  
AIM  
AIO  
ISL60002BIH325Z-TK (Note)  
ISL60002CIH325-TK  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23  
ISL60002CIH325Z-TK (Note)  
ISL60002DIH325-TK  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23  
3
ISL60002  
Ordering Information (Continued)  
PART  
TEMP.  
PART NUMBER  
ISL60002DIH325Z-TK (Note)  
ISL60002BAH333Z-TK (Note)  
ISL60002CAH333Z-TK (Note)  
ISL60002DAH333Z-TK (Note)  
8 LD SOIC  
MARKING  
V
(V)  
GRADE  
RANGE (°C)  
PACKAGE  
OUT  
2.500V  
3.300V  
3.300V  
3.300V  
±5.0mV, 20ppm/°C  
±1.0mV, 20ppm/°C  
±2.5mV, 20ppm/°C  
±5.0mV, 20ppm/°C  
-40 to 85  
-40 to 105  
-40 to 105  
-40 to 105  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23 (Pb-free)  
3 Ld SOT-23 (Pb-free)  
AOP  
AOU  
APC  
ISL60002BIB812*  
60002BI 12  
60002CI 12  
60002DI 12  
60002BI 25  
60002CI 25  
60002DI 25  
1.250V  
1.250V  
1.250V  
2.500V  
2.500V  
2.500V  
±1.0mV, 20ppm/°C  
±2.5mV, 20ppm/°C  
±5.0mV, 20ppm/°C  
±1.0mV, 20ppm/°C  
±2.5mV, 20ppm/°C  
±5.0mV, 20ppm/°C  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
8 Ld SOIC  
8 Ld SOIC  
8 Ld SOIC  
8 Ld SOIC  
8 Ld SOIC  
8 Ld SOIC  
ISL60002CIB812*  
ISL60002DIB812*  
ISL60002BIB825*  
ISL60002CIB825*  
ISL60002DIB825*  
*Add "TK" suffix for tape and reel.  
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate  
termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL  
classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.  
4
ISL60002  
Absolute Maximum Ratings  
Recommended Operating Conditions  
Temperature Range (Industrial). . . . . . . . . . . . . . . . . .-40°C to 85°C  
Storage Temperature Range . . . . . . . . . . . . . . . . . -65°C to + 150°C  
Max Voltage V to Gnd. . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6.5V  
IN  
OUT  
OUT  
OUT  
Max Voltage V  
to Gnd*:  
ESD Ratings  
MIL-STD-883, Method 3014. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .≥5kV  
ISL60002, V  
ISL60002, V  
= 1.25V. . . . . . . . . . . . . . . . . . . . . -0.5V to +2.25V  
= 2.50V. . . . . . . . . . . . . . . . . . . . . -0.5V to +3.50V  
Voltage on “DNC” pins . . . . No connections permitted to these pins.  
Lead Temperature, Soldering* . . . . . . . . . . . . . . . . . . . . . . . .+225°C  
*Maximum duration = 10s  
CAUTION: Absolute Maximum Ratings are limits which may result in impaired reliability and/or permanent damage to the device. These are stress ratings provided for  
information only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification are not  
implied.  
For guaranteed specifications and test conditions, see Electrical Specifications.  
The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed  
test conditions.  
Electrical Specifications ISL60002-10, V  
= 1.024V (Additional specifications on page 7, “Common Electrical Specifications”)  
OUT  
Operating Conditions: V = 3.0V, I  
IN OUT  
= 0mA, C = 0.001µF, T = -40 to +85°C, unless otherwise specified.  
OUT A  
SYMBOL  
PARAMETER  
Output Voltage  
Accuracy  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
V
1.024  
V
OUT  
V
V
T = 25°C  
A
OA  
OUT  
ISL60002B10  
ISL60002C10  
ISL60002D10  
-1.0  
-2.5  
-5.0  
2.7  
+1.0  
+2.5  
+5.0  
5.5  
mV  
mV  
mV  
V
V
Input Voltage Range  
IN  
Electrical Specifications ISL60002-11, V  
= 1.200V (Additional specifications on page 7, “Common Electrical Specifications”)  
OUT  
Operating Conditions: V = 3.0V, I  
IN OUT  
= 0mA, C = 0.001µF, T = -40 to +85°C, unless otherwise specified.  
OUT A  
SYMBOL  
PARAMETER  
Output Voltage  
Accuracy  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
V
1.200  
V
OUT  
V
V
T = 25°C  
A
OA  
OUT  
ISL60002B11  
ISL60002C11  
ISL60002D11  
-1.0  
-2.5  
-5.0  
2.7  
+1.0  
+2.5  
+5.0  
5.5  
mV  
mV  
mV  
V
V
Input Voltage Range  
IN  
Electrical Specifications ISL60002-12, V  
= 1.250V (Additional specifications on page 7, “Common Electrical Specifications”)  
OUT  
Operating Conditions: V = 3.0V, I  
IN OUT  
= 0mA, C = 0.001µF, T = -40 to +85°C, unless otherwise specified.  
OUT A  
SYMBOL  
PARAMETER  
Output Voltage  
Accuracy  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
V
1.250  
V
OUT  
V
V
T = 25°C  
A
OA  
OUT  
ISL60002B12  
ISL60002C12  
ISL60002D12  
-1.0  
-2.5  
-5.0  
2.7  
+1.0  
+2.5  
+5.0  
5.5  
mV  
mV  
mV  
V
V
Input Voltage Range  
IN  
5
ISL60002  
Electrical Specifications ISL60002-18, V  
= 1.800V (Additional specifications on page 7, “Common Electrical Specifications”)  
OUT  
Operating Conditions: V = 3.0V, I  
IN OUT  
= 0mA, C = 0.001µF, T = -40 to +85°C, unless otherwise specified.  
OUT A  
SYMBOL  
PARAMETER  
Output Voltage  
Accuracy  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
V
1.800  
V
OUT  
V
V
T = 25°C  
A
OA  
OUT  
ISL60002B18  
ISL60002C18  
ISL60002D18  
-1.0  
-2.5  
-5.0  
2.7  
+1.0  
+2.5  
+5.0  
5.5  
mV  
mV  
mV  
V
V
Input Voltage Range  
IN  
Electrical Specifications ISL60002-20, V  
= 2.048V (Additional specifications on page 7, “Common Electrical Specifications”)  
OUT  
Operating Conditions: V = 3.0V, I  
IN OUT  
= 0mA, C = 0.001µF, T = -40 to +85°C, unless otherwise specified.  
OUT A  
SYMBOL  
PARAMETER  
Output Voltage  
Accuracy  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
V
2.048  
V
OUT  
V
V
T = 25°C  
A
OA  
OUT  
ISL60002B20  
ISL60002C20  
ISL60002D20  
-1.0  
-2.5  
-5.0  
2.7  
+1.0  
+2.5  
+5.0  
5.5  
mV  
mV  
mV  
V
V
Input Voltage Range  
IN  
Electrical Specifications ISL60002-25, V  
= 2.500V (Additional specifications on page 7, “Common Electrical Specifications”)  
OUT  
Operating Conditions: V = 3.0V, I  
IN OUT  
= 0mA, C = 0.001µF, T = -40 to +85°C, unless otherwise specified.  
OUT A  
SYMBOL  
PARAMETER  
Output Voltage  
Accuracy  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
V
2.500  
V
OUT  
V
V
T = 25°C  
A
OA  
OUT  
ISL60002B25  
ISL60002C25  
ISL60002D25  
-1.0  
-2.5  
-5.0  
2.7  
+1.0  
+2.5  
+5.0  
5.5  
mV  
mV  
mV  
V
V
Input Voltage Range  
IN  
Electrical Specifications ISL60002-33, V  
= 3.300V  
OUT  
Operating Conditions: V = 5.0V, I  
IN OUT  
= 0mA, C = 0.001µF, T = -40 to +105°C, unless otherwise specified.  
OUT A  
SYMBOL  
PARAMETER  
Output Voltage  
Accuracy  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
V
3.300  
V
OUT  
V
V
T = 25°C  
A
OA  
OUT  
ISL60002B33  
ISL60002C33  
ISL60002D33  
-1.0  
-2.5  
-5.0  
1.0  
2.5  
5.0  
20  
mV  
mV  
mV  
TC V  
Output Voltage Temperature  
Coefficient (Note 1)  
ppm/°C  
OUT  
V
Input Voltage Range  
Supply Current  
3.5  
5.5  
700  
200  
100  
150  
V
IN  
I
350  
80  
nA  
IN  
/V  
V  
V  
Line Regulation  
Load Regulation  
+3.5V V +5.5V  
IN  
µV/V  
µV/mA  
µV/mA  
OUT  
IN  
/I  
0mA I  
20mA  
25  
OUT OUT  
SOURCE  
-20mA I 0mA  
50  
SINK  
6
ISL60002  
Electrical Specifications ISL60002-33, V  
= 3.300V (Continued)  
OUT  
Operating Conditions: V = 5.0V, I  
IN OUT  
= 0mA, C = 0.001µF, T = -40 to +105°C, unless otherwise specified.  
OUT A  
SYMBOL  
V /t  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
Long Term Stability (Note 4)  
T
= 25°C  
10  
ppm/1  
kHrs  
OUT  
A
V  
/T  
OUT  
Thermal Hysteresis (Note 2)  
Short Circuit Current (Note 3)  
Output Voltage Noise  
T = 145°C  
100  
50  
ppm  
mA  
A
A
I
T
= 25°C  
80  
SC  
A
V
0.1Hz f 10Hz  
30  
µV  
P-P  
N
Common Electrical Specifications ISL60002-10, -11, -12, -18, -20, and -25  
Operating Conditions: V = 3.0V, I  
IN OUT  
= 0mA, C = 0.001µF, T = -40 to +85°C, unless otherwise specified  
OUT A  
SYMBOL  
TC V  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
Output Voltage Temperature  
Coefficient (Note 1)  
20  
ppm/°C  
OUT  
I
Supply Current  
Line Regulation  
Load Regulation  
350  
80  
25  
50  
10  
700  
200  
100  
150  
nA  
IN  
V  
/V  
+2.7V V +5.5V  
IN  
µV/V  
OUT  
IN  
V  
/I  
OUT OUT  
0mA I  
7mA  
µV/mA  
µV/mA  
SOURCE  
-7mA I 0mA  
SINK  
= 25°C  
V  
/t  
OUT  
Long Term Stability (Note 4)  
T
ppm/1  
kHrs  
A
V  
/T  
OUT  
Thermal Hysteresis (Note 2)  
Short Circuit Current (Note 3)  
Output Voltage Noise  
T = 125°C  
100  
50  
ppm  
mA  
A
A
I
T
= 25°C  
80  
SC  
A
V
0.1Hz f 10Hz  
30  
µV  
P-P  
N
NOTES:  
1. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in V  
is divided by the temperature range:  
OUT  
(-40°C to +85°C = 125°C, or -40°C to +105°C = 145°C for the ISL60002-33).  
2. Thermal Hysteresis is the change in V  
measured @ T = 25°C after temperature cycling over a specified range, T , V  
is read initially at T = 25°C for the  
A
OUT  
A
A
OUT  
device under test. The device is temperature cycled and a second V  
measurement is taken at 25°C. The difference between the initial V  
reading and the  
OUT  
OUT  
second V  
OUT  
reading is then expressed in ppm. For T = 125°C, the device under is cycled from +25°C to +85°C to -40°C to +25°C, and for T = 145°C, the  
A
A
device under is cycled from +25°C to +105°C to -40°C to +25°C  
3. Guaranteed by device characterization and/or correlation to other device tests.  
4. FGA™ voltage reference long term drift is a logarithmic characteristic. Changes that occur after the first few hundred hours of operation are significantly smaller with  
time, asymptotically approaching zero beyond 2000 hours. Because of this decreasing characteristic, long-term drift is specified in ppm/1kHr.  
7
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 1.024V  
OUT  
V
= 3.0V, I  
OUT  
= 0mA, T = 25°C unless otherwise specified  
A
IN  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 1.  
FIGURE 2.  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 3.  
FIGURE 4.  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 5.  
FIGURE 6.  
8
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 1.024V (Continued)  
OUT  
V
= 3.0V, I  
OUT  
= 0mA, T = 25°C unless otherwise specified  
A
IN  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 7.  
FIGURE 8.  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 9.  
FIGURE 10.  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 11.  
FIGURE 12.  
9
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 1.024V (Continued)  
OUT  
V
= 3.0V, I  
OUT  
= 0mA, T = 25°C unless otherwise specified  
A
IN  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 13.  
FIGURE 14.  
Typical Performance Characteristic Curves ISL60002, V  
= 1.20V  
OUT  
V
= 3.0V, I  
= 0mA, T = 25°C unless otherwise specified  
IN  
OUT A  
700  
600  
500  
400  
300  
200  
100  
0
500  
450  
400  
350  
300  
250  
200  
150  
100  
450nA  
+85°C  
+25°C  
-40°C  
340nA  
270nA  
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5  
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5  
V
(V)  
V
(V)  
IN  
IN  
FIGURE 15. I vs V (3 REPRESENTATIVE UNITS)  
IN IN  
FIGURE 16. I vs V OVER TEMPERATURE  
IN IN  
10  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 1.20V (Continued)  
OUT  
V
= 3.0V, I  
= 0mA, T = 25°C unless otherwise specified  
IN  
OUT A  
1.2006  
UNIT 2  
1.2004  
UNIT 3  
1.2002  
UNIT 1  
1.2  
1.1998  
1.1996  
1.1994  
-40  
-15  
10  
35  
60  
85  
TEMPERATURE (°C)  
FIGURE 17. V  
vs TEMPERATURE NORMALIZED to 25°C  
OUT  
1.2001  
1.20008  
1.20006  
1.20004  
1.20002  
1.2  
150  
125  
100  
75  
+85°C  
+25°C  
50  
340nA  
25  
0
270nA  
450nA  
-25  
-50  
1.19998  
1.19996  
1.19994  
1.19992  
1.1999  
-40°C  
-75  
-100  
-125  
-150  
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5  
(V)  
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5  
V
V
IN  
IN  
FIGURE 18. LINE REGULATION (3 REPRESENTATIVE UNITS)  
FIGURE 19. LINE REGULATION OVER TEMPERATURE  
C
= 0nF  
C
= 500pF  
L
L
V = 0.30V  
IN  
V = 0.30V  
IN  
V = -0.30V  
V = -0.30V  
IN  
IN  
1ms/DIV  
1ms/DIV  
FIGURE 21. LINE TRANSIENT RESPONSE  
FIGURE 20. LINE TRANSIENT RESPONSE  
11  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 1.20V (Continued)  
OUT  
V
= 3.0V, I  
= 0mA, T = 25°C unless otherwise specified  
IN  
OUT A  
0
-10  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
-90  
0.60  
0.50  
0.40  
0.30  
0.20  
0.10  
0.00  
-0.10  
-0.20  
-0.30  
-0.40  
-0.50  
-0.60  
85°C  
NO LOAD  
1nF LOAD  
25°C  
-40°C  
10nF LOAD  
100nF LOAD  
-100  
1
10  
100  
1k  
10k  
100k  
1M  
-7 -6 -5 -4 -3 -2 -1  
0
1
2
3
4
5
6
7
FREQUENCY (Hz)  
SINKING OUTPUT CURRENT (mA)  
SOURCING  
FIGURE 22. PSRR vs CAPACITIVE LOAD  
FIGURE 23. LOAD REGULATION  
I
= -50µA  
I = 50µA  
L
L
I
= -7mA  
I = 7mA  
L
L
200µs/DIV  
FIGURE 24. LOAD TRANSIENT RESPONSE  
500µs/DIV  
FIGURE 25. LOAD TRANSIENT RESPONSE  
160  
3.2  
2.8  
2.4  
2
NO LOAD  
1nF LOAD  
140  
120  
100  
80  
V
IN  
10nF LOAD  
1.6  
1.2  
0.8  
0.4  
0
60  
340nA  
100nF LOAD  
40  
20  
0
1
10  
100  
1k  
10k  
100k  
0
2
4
6
8
10  
12  
TIME (ms)  
FREQUENCY (Hz)  
FIGURE 26. TURN-ON TIME (25°C)  
FIGURE 27. Z  
vs FREQUENCY  
OUT  
12  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 1.20V (Continued)  
OUT  
V
= 3.0V, I = 0mA, T = 25°C unless otherwise specified  
OUT A  
IN  
10s/DIV  
FIGURE 28. V  
NOISE  
OUT  
Typical Performance Characteristic Curves ISL60002, V  
= 1.25V  
OUT  
V
= 3.0V, I  
= 0mA, T = 25°C unless otherwise specified  
IN  
OUT A  
700  
650  
600  
550  
500  
450  
400  
350  
300  
250  
460  
440  
420  
400  
380  
360  
340  
320  
300  
UNIT 3 (570nA)  
+85°C  
+25°C  
-40°C  
UNIT 2 (380nA)  
UNIT 1 (260nA)  
200  
2.5  
3.0  
3.5  
4.0  
(V)  
4.5  
5.0  
5.5  
2.5  
3.0  
3.5  
4.0  
(V)  
4.5  
5.0  
5.5  
V
V
IN  
IN  
FIGURE 29. I vs V (3 REPRESENTATIVE UNITS)  
IN IN  
FIGURE 30. I vs V OVER TEMPERATURE  
IN IN  
1.2510  
1.2508  
1.2506  
1.2504  
1.2502  
1.25  
UNIT 2  
UNIT 3  
UNIT 1  
1.2498  
1.2496  
1.2494  
1.2492  
1.249  
-40  
-15  
10  
35  
60  
85  
TEMPERATURE (°C)  
FIGURE 31. V  
vs TEMPERATURE NORMALIZED TO 25°C  
OUT  
13  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 1.25V (Continued)  
OUT  
V
= 3.0V, I  
= 0mA, T = 25°C unless otherwise specified  
IN  
OUT A  
1.2503  
1.25025  
1.2502  
1.25015  
1.2501  
1.25005  
1.25  
50  
25  
0
UNIT 1 (250nA)  
UNIT3(570nA)
-40°C  
+25°C  
+85°C  
UNIT 2 (380nA)  
1.24995  
1.2499  
-25  
2.5  
3.0  
3.5  
4.0  
(V)  
4.5  
5.0  
5.5  
2.5  
3.0  
3.5  
4.0  
(V)  
4.5  
5.0  
5.5  
V
V
IN  
IN  
FIGURE 32. LINE REGULATION (3 REPRESENTATIVE UNITS)  
FIGURE 33. LINE REGULATION OVER TEMPERATURE  
C
= 0nF  
C
= 1nF  
L
L
V = 0.30V  
IN  
V = 0.30V  
IN  
V = -0.30V  
V = -0.30V  
IN  
IN  
1ms/DIV  
FIGURE 34. LINE TRANSIENT RESPONSE  
1ms/DIV  
FIGURE 35. LINE TRANSIENT RESPONSE  
0
-10  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
0.30  
0.20  
NO LOAD  
+85°C  
+25°C  
1nF LOAD  
0.10  
0.00  
-40°C  
10nF LOAD  
100nF LOAD  
-0.10  
-7 -6 -5 -4 -3 -2 -1  
SINKING  
0
1
2
3
4
5
6
7
1
10  
100  
1k  
10k  
100k  
1M  
SOURCING  
FREQUENCY (Hz)  
OUTPUT CURRENT (mA)  
FIGURE 36. PSRR vs CAPACITIVE LOAD  
FIGURE 37. LOAD REGULATION  
14  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 1.25V (Continued)  
OUT  
V
= 3.0V, I  
= 0mA, T = 25°C unless otherwise specified  
IN  
OUT A  
I = 50µA  
L
I
= -50µA  
L
I
= -7mA  
I = 7mA  
L
L
500µs/DIV  
100µs/DIV  
FIGURE 38. LOAD TRANSIENT RESPONSE  
FIGURE 39. LOAD TRANSIENT RESPONSE  
180  
160  
140  
120  
100  
80  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
0
NO LOAD  
V
IN  
10nF LOAD  
1nF LOAD  
60  
100nF LOAD  
10k  
380nA  
40  
20  
0
1
10  
100  
1k  
1M  
-1  
1
3
5
7
9
11  
TIME (ms)  
FREQUENCY (Hz)  
FIGURE 40. TURN-ON TIME (25°C)  
FIGURE 41. Z  
vs FREQUENCY  
OUT  
10s/DIV  
FIGURE 42. V  
NOISE  
OUT  
15  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 1.8V  
OUT  
V
= 3.0V, I  
OUT  
= 0mA, T = 25°C unless otherwise specified  
A
IN  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 43.  
FIGURE 44.  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 45.  
FIGURE 46.  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 47.  
FIGURE 48.  
16  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 1.8V (Continued)  
OUT  
V
= 3.0V, I  
OUT  
= 0mA, T = 25°C unless otherwise specified  
A
IN  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 49.  
FIGURE 50.  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 51.  
FIGURE 52.  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 53.  
FIGURE 54.  
17  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 1.8V (Continued)  
OUT  
V
= 3.0V, I  
OUT  
= 0mA, T = 25°C unless otherwise specified  
A
IN  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 55.  
FIGURE 56.  
Typical Performance Characteristic Curves ISL60002, V  
= 2.048V  
OUT  
V
= 3.0V, I  
OUT  
= 0mA, T = 25°C unless otherwise specified  
A
IN  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 57.  
FIGURE 58.  
18  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 2.048V (Continued)  
OUT  
V
= 3.0V, I  
OUT  
= 0mA, T = 25°C unless otherwise specified  
A
IN  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 59.  
FIGURE 60.  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 61.  
FIGURE 62.  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 63.  
FIGURE 64.  
19  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 2.048V (Continued)  
OUT  
V
= 3.0V, I  
OUT  
= 0mA, T = 25°C unless otherwise specified  
A
IN  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 65.  
FIGURE 66.  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 67.  
FIGURE 68.  
To Be Added in Q1-06  
To Be Added in Q1-06  
FIGURE 69.  
FIGURE 70.  
20  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 2.50V  
OUT  
V
= 3.0V, I  
= 0mA, T = 25°C unless otherwise specified  
IN  
OUT A  
600  
550  
500  
450  
400  
350  
300  
250  
460  
440  
420  
400  
380  
360  
340  
320  
300  
+85°C  
UNIT 3 (570nA)  
+25°C  
-40°C  
UNIT 2 (380nA)  
UNIT 1 (260nA)  
200  
2.5  
3.0  
3.5  
4.0  
(V)  
4.5  
5.0  
5.5  
2.5  
3.0  
3.5  
4.0  
(V)  
4.5  
5.0  
5.5  
V
V
IN  
IN  
FIGURE 71. I vs V (3 REPRESENTATIVE UNITS)  
IN IN  
FIGURE 72. I vs V OVER TEMPERATURE  
IN IN  
2.502  
2.5015  
2.501  
2.5005  
2.5  
UNIT 2  
UNIT 1  
UNIT 3  
2.4995  
2.499  
2.4985  
-40  
-15  
10  
35  
60  
85  
TEMPERATURE (°C)  
FIGURE 73. V  
vs TEMPERATURE NORMALIZED TO 25°C  
OUT  
200  
150  
100  
50  
2.50016  
2.50012  
2.50008  
2.50004  
2.50000  
2.49996  
2.49992  
UNIT 2  
-40°C  
+85°C  
+25°C  
UNIT 1  
UNIT 3  
0
-50  
-100  
2.5  
3.0  
3.5  
4.0  
(V)  
4.5  
5.0  
5.5  
2.5  
3.0  
3.5  
4.0  
(V)  
4.5  
5.0  
5.5  
V
V
IN  
IN  
FIGURE 74. LINE REGULATION (3 REPRESENTATIVE UNITS)  
FIGURE 75. LINE REGULATION OVER TEMPERATURE  
21  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 2.50V (Continued)  
OUT  
V
= 3.0V, I = 0mA, T = 25°C unless otherwise specified  
OUT A  
IN  
C
= 0nF  
C = 1nF  
L
L
V = 0.30V  
IN  
V = 0.30V  
IN  
V = -0.30V  
IN  
V = -0.30V  
IN  
1ms/DIV  
1ms/DIV  
FIGURE 76. LINE TRANSIENT RESPONSE  
FIGURE 77. LINE TRANSIENT RESPONSE  
0.20  
0.10  
0
-10  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
NO LOAD  
+85°C  
+25°C  
-40°C  
1nF LOAD  
0.00  
10nF LOAD  
100nF LOAD  
-0.10  
-7 -6 -5 -4 -3 -2 -1  
SINKING  
0
1
2
3
4
5
6
7
1
10  
100  
1k  
10k  
100k  
1M  
SOURCING  
FREQUENCY (Hz)  
OUTPUT CURRENT (mA)  
FIGURE 78. PSRR vs CAPACITIVE LOAD  
FIGURE 79. LOAD REGULATION  
I
= -50µA  
I = 50µA  
L
L
I
= -7mA  
I = 7mA  
L
L
200µs/DIV  
500µs/DIV  
FIGURE 80. LOAD TRANSIENT RESPONSE  
FIGURE 81. LOAD TRANSIENT RESPONSE  
22  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 2.50V (Continued)  
OUT  
V
= 3.0V, I  
= 0mA, T = 25°C unless otherwise specified  
IN  
OUT A  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
200  
150  
100  
50  
1nF LOAD  
NO LOAD  
I
= 380nA  
IN  
10nF LOAD  
100nF LOAD  
0
0
-1  
1
3
5
7
9
11  
1
10  
100  
1k  
10k  
100k  
TIME (ms)  
FREQUENCY (Hz)  
FIGURE 82. TURN-ON TIME (25°C)  
FIGURE 83. Z  
vs FREQUENCY  
OUT  
10s/DIV  
FIGURE 84. V  
NOISE  
OUT  
23  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 3.3V  
OUT  
V
= 3.0V, I  
= 0mA, T = 25°C unless otherwise specified  
IN  
OUT A  
400  
380  
360  
340  
320  
300  
280  
260  
600  
550  
500  
450  
400  
350  
300  
250  
200  
150  
100  
85°C  
25°C  
450nA  
360nA  
-40°C  
240nA  
3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5  
(V)  
3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5  
(V)  
V
V
IN  
IN  
FIGURE 85. I vs V (3 REPRESENTATIVE UNITS)  
IN IN  
FIGURE 86. I vs V OVER TEMPERATURE  
IN  
IN  
3.3008  
3.3006  
3.3004  
3.3002  
3.3  
UNIT 1  
UNIT 3  
UNIT 2  
3.2998  
3.2996  
3.2994  
3.2992  
3.299  
-40  
-15  
10  
35  
60  
85  
TEMPERATURE (°C)  
FIGURE 87. V  
vs TEMPERATURE NORMALIZED TO 25°C  
OUT  
3.3002  
3.30015  
3.3001  
3.30005  
3.3  
150  
125  
100  
75  
50  
25  
450nA  
240nA  
360nA  
+85°C  
-40°C  
3.29995  
3.2999  
3.29985  
3.2998  
3.29975  
3.2997  
0
-25  
-50  
-75  
-100  
-125  
-150  
25°C  
3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5  
(V)  
3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5  
(V)  
V
V
IN  
IN  
FIGURE 88. LINE REGULATION (3 REPRESENTATIVE UNITS)  
FIGURE 89. LINE REGULATION OVER TEMPERATURE  
24  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 3.3V (Continued)  
OUT  
V
= 3.0V, I = 0mA, T = 25°C unless otherwise specified  
OUT A  
IN  
C
= 0nF  
C = 1nF  
L
L
V = 0.30V  
IN  
V = 0.30V  
IN  
V = -0.30V  
V = -0.30V  
IN  
IN  
1ms/DIV  
1ms/DIV  
FIGURE 91. LINE TRANSIENT RESPONSE  
FIGURE 90. LINE TRANSIENT RESPONSE  
0
-10  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
-90  
-100  
NO LOAD  
1nF LOAD  
10nF LOAD  
100nF LOAD  
1
10  
100  
1k  
10k  
100k  
1M  
FREQUENCY (Hz)  
FIGURE 92. PSRR vs CAPACITIVE LOAD  
1.00  
0.60  
0.50  
0.40  
0.30  
0.20  
0.10  
0.00  
-0.10  
-0.20  
-0.30  
-0.40  
-0.50  
-0.60  
0.80  
0.60  
+85°C  
+85°C  
-40°C  
25°C  
25°C  
0.40  
0.20  
-40°C  
0.00  
-0.20  
-0.40  
-0.60  
-0.80  
-1.00  
-7 -6 -5 -4 -3 -2 -1  
SINKING  
0
1
2
3
4
5
6
7
-20-18-16-14-12-10 -8 -6 -4 -2  
0
2
4
6
8 10 12 14 16 18 20  
SOURCING  
OUTPUT CURRENT (mA)  
SOURCING  
SINKING  
OUTPUT CURRENT (mA)  
FIGURE 93. LOAD REGULATION I  
-I  
SOURCE SINK  
= ±7mA  
FIGURE 94. LOAD REGULATION I  
-I = ±20mA  
SOURCE SINK  
25  
ISL60002  
Typical Performance Characteristic Curves ISL60002, V  
= 3.3V (Continued)  
OUT  
V
= 3.0V, I = 0mA, T = 25°C unless otherwise specified  
OUT A  
IN  
I
= -50µA  
I
= 50µA  
I
= -1mA  
I = 1mA  
L
L
L
L
200µs/DIV  
FIGURE 95. LOAD TRANSIENT RESPONSE  
200µs/DIV  
FIGURE 96. LOAD TRANSIENT RESPONSE  
I
= -7mA  
I
= 7mA  
I
= -20mA  
I = 20mA  
L
L
L
L
200µs/DIV  
FIGURE 97. LOAD TRANSIENT RESPONSE  
200µs/DIV  
FIGURE 98. LOAD TRANSIENT RESPONSE  
160  
140  
120  
100  
80  
1nF LOAD  
NO LOAD  
5
4
3
2
1
0
V
IN  
10nF LOAD  
360nA  
60  
40  
100nF LOAD  
20  
0
1
10  
100  
1k  
10k  
100k  
0
2
4
6
8
10  
12  
TIME (ms)  
FREQUENCY (Hz)  
FIGURE 99. TURN-ON TIME (25°C)  
FIGURE 100. Z  
vs FREQUENCY  
OUT  
26  
ISL60002  
Applications Information  
FGA Technology  
V
= +3.0V  
IN  
10µF  
0.01µF  
REF IN  
The ISL60002 series of voltage references use the floating  
gate technology to create references with very low drift and  
supply current. Essentially the charge stored on a floating  
gate cell is set precisely in manufacturing. The reference  
voltage output itself is a buffered version of the floating gate  
voltage. The resulting reference device has excellent  
characteristics which are unique in the industry: very low  
temperature drift, high initial accuracy, and almost zero  
supply current. Also, the reference voltage itself is not limited  
by voltage bandgaps or zener settings, so a wide range of  
reference voltages can be programmed (standard voltage  
settings are provided, but customer-specific voltages are  
available).  
V
IN  
V
OUT  
ISL60002  
GND  
0.001µF–0.01µF  
ENABLE  
SCK  
SDAT  
SERIAL  
BUS  
12 to 24-BIT  
A/D CONVERTER  
FIGURE 101.  
The process used for these reference devices is a floating  
gate CMOS process, and the amplifier circuitry uses CMOS  
transistors for amplifier and output transistor circuitry. While  
providing excellent accuracy, there are limitations in output  
noise level and load regulation due to the MOS device  
characteristics. These limitations are addressed with circuit  
techniques discussed in other sections.  
Board Mounting Considerations  
For applications requiring the highest accuracy, board  
mounting location should be reviewed. Placing the device in  
areas subject to slight twisting can cause degradation of the  
accuracy of the reference voltage due to die stresses. It is  
normally best to place the device near the edge of a board,  
or the shortest side, as the axis of bending is most limited at  
that location. Obviously mounting the device on flexprint or  
extremely thin PC material will likewise cause loss of  
reference accuracy.  
Nanopower Operation  
Reference devices achieve their highest accuracy when  
powered up continuously, and after initial stabilization has  
taken place. This drift can be eliminated by leaving the  
power on continuously.  
Noise Performance and Reduction  
The output noise voltage in a 0.1Hz to 10Hz bandwidth is  
The ISL60002 is the first high precision voltage reference  
with ultra low power consumption that makes it possible to  
leave power on continuously in battery operated circuits. The  
ISL60002 consumes extremely low supply current due to the  
proprietary FGA technology. Supply current at room  
temperature is typically 350nA which is 1 to 2 orders of  
magnitude lower than competitive devices. Application  
circuits using battery power will benefit greatly from having  
an accurate, stable reference which essentially presents no  
load to the battery.  
typically 30µV . This is shown in the plot in the Typical  
P-P  
Performance Curves. The noise measurement is made with  
a bandpass filter made of a 1 pole high-pass filter with a  
corner frequency at 0.1Hz and a 2-pole low-pass filter with a  
corner frequency at 12.6Hz to create a filter with a 9.9Hz  
bandwidth. Noise in the 10kHz to 1MHz bandwidth is  
approximately 400µV  
with no capacitance on the output,  
P-P  
as shown in Figure 102. These noise measurements are  
made with a 2 decade bandpass filter made of a 1 pole high-  
pass filter with a corner frequency at 1/10 of the center  
frequency and 1-pole low-pass filter with a corner frequency  
at 10 times the center frequency. Figure 102 also shows the  
noise in the 10kHz to 1MHz band can be reduced to about  
In particular, battery powered data converter circuits that  
would normally require the entire circuit to be disabled when  
not in use can remain powered up between conversions as  
shown in Figure 101. Data acquisition circuits providing 12 to  
24 bits of accuracy can operate with the reference device  
continuously biased with no power penalty, providing the  
highest accuracy and lowest possible long term drift.  
50µV  
using a 0.001µF capacitor on the output. Noise in  
P-P  
the 1kHz to 100kHz band can be further reduced using a  
0.1µF capacitor on the output, but noise in the 1Hz to 100Hz  
band increases due to instability of the very low power  
amplifier with a 0.1µF capacitance load. For load  
Other reference devices consuming higher supply currents  
will need to be disabled in between conversions to conserve  
battery capacity. Absolute accuracy will suffer as the device  
is biased and requires time to settle to its final value, or, may  
not actually settle to a final value as power on time may be  
short.  
capacitances above 0.001µF the noise reduction network  
shown in Figure 103 is recommended. This network reduces  
noise significantly over the full bandwidth. As shown in  
Figure 102, noise is reduced to less than 40µV  
from 1Hz  
P-P  
to 1MHz using this network with a 0.01µF capacitor and a  
2kresistor in series with a 10µF capacitor.  
27  
ISL60002  
400  
350  
300  
250  
200  
150  
100  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
CL = 0  
CL = 0.001µF  
CL = 0.1µF  
V
IN  
CL = 0.01µF & 10µF + 2kΩ  
580nA  
280nA  
380nA  
50  
0
1
10  
100  
1,000  
10,000  
100,000  
0
-1  
1
3
5
7
9
11  
TIME (ms)  
FIGURE 102. NOISE REDUCTION  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
V
IN  
V
= 3.0V  
IN  
V
10µF  
IN  
V
O
0.1µF  
ISL60002  
GND  
2kΩ  
580nA  
280nA  
0.01µF  
10µF  
380nA  
FIGURE 103.  
Turn-On Time  
0
-1  
1
3
5
7
9
11  
The ISL60002 devices have ultra-low supply current and  
thus the time to bias up internal circuitry to final values will  
be longer than with higher power references. Normal turn-on  
time is typically 7ms. This is shown in Figure 104. Since  
devices can vary in supply current down to >300nA, turn-on  
time can last up to about 12ms. Care should be taken in  
system design to include this delay before measurements or  
conversions are started.  
TIME (ms)  
FIGURE 104. TURN-ON TIME  
Temperature Coefficient  
The limits stated for temperature coefficient (tempco) are  
governed by the method of measurement. The  
overwhelming standard for specifying the temperature drift of  
a reference is to measure the reference voltage at two  
temperatures, take the total variation, (V  
– V ), and  
HIGH  
LOW  
divide by the temperature extremes of measurement  
(T  
– T  
). The result is divided by the nominal  
HIGH  
LOW  
6
reference voltage (at T = 25°C) and multiplied by 10 to yield  
ppm/°C. This is the “Box” method for specifying temperature  
coefficient.  
28  
ISL60002  
Typical Application Circuits  
V
= 5.0V  
IN  
R = 200Ω  
2N2905  
V
IN  
V
2.5V/50mA  
OUT  
ISL60002  
OUT  
V
= 2.50V  
GND  
0.001µF  
FIGURE 105. PRECISION 2.5V 50mA REFERENCE  
2.7 - 5.5V  
0.1µF  
10µF  
V
IN  
V
OUT  
ISL60002,  
V
= 2.50V  
OUT  
GND  
0.001µF  
V
R
CC  
V
H
OUT  
X9119  
SDA  
SCL  
+
2-WIRE BUS  
V
OUT  
(BUFFERED)  
V
R
L
SS  
FIGURE 106. 2.5V FULL SCALE LOW-DRIFT 10-BIT ADJUSTABLE VOLTAGE SOURCE  
+2.7-5.5V  
0.1µF  
10µF  
V
IN  
+
V
SENSE  
OUT  
V
OUT  
ISL60002  
GND  
LOAD  
FIGURE 107. KELVIN SENSED LOAD  
29  
ISL60002  
Packaging Information  
3-Lead, SOT-23, Package Code H3  
0.007 (0.20)  
0.0003 (0.08)  
B
B
0.093 (2.35) BSC  
0.046 (1.18) BSC  
0.055 (1.40)  
0.047 (1.20)  
C
L
4X  
0.35 H A-B  
D
0.35 C A-B  
2X N/2 TIPS  
D
2
1
0.075 (1.90) BSC  
12° REF.  
TYP.  
0.120 (3.04)  
0.110 (2.80)  
0.034 (0.88)  
0.047 (1.02)  
0.038 (0.95)  
BSC  
0.10 R MIN.  
0.20 in  
Parting Line  
Seating Plane  
0.10 R MIN.  
0.0004 (0.01)  
0.0040 (0.10)  
SEATING PLANE  
0.035 (0.89)  
0.044 (1.12)  
.024 (0.60)  
.016 (0.40)  
0–8°C  
0.575 REF.  
NOTES:  
1. All dimensions in inches (in parentheses in millimeters).  
2. Package dimensions exclude molding flash.  
3. Die and die paddle is facing down towards seating plane.  
4. This part is compliant with JEDEC Specification TO-236AB.  
5. Dimensioning and tolerances per ASME, Y14.5M-1994.  
30  
ISL60002  
Packaging Information  
8-Lead Plastic, SOIC, Package Code B8  
0.150 (3.80) 0.228 (5.80)  
0.158 (4.00) 0.244 (6.20)  
Pin 1 Index  
Pin 1  
0.014 (0.35)  
0.019 (0.49)  
0.188 (4.78)  
0.197 (5.00)  
(4X) 7°  
0.053 (1.35)  
0.069 (1.75)  
0.004 (0.19)  
0.050 (1.27)  
0.010 (0.25)  
0.010 (0.25)  
0.050" Typical  
X 45°  
0.020 (0.50)  
0.050"  
Typical  
0° - 8°  
0.0075 (0.19)  
0.010 (0.25)  
0.250"  
0.016 (0.410)  
0.037 (0.937)  
0.030"  
Typical  
8 Places  
FOOTPRINT  
NOTE: All dimensions in inches (in parentheses in millimeters).  
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.  
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality  
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without  
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and  
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result  
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.  
For information regarding Intersil Corporation and its products, see www.intersil.com  
31  

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