首页 |元器件品牌

ISL28256FAZ-T7 [INTERSIL]

39uA Micropower Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps; 39uA微单和双精密轨到轨输入输出（ RRIO ），低输入偏置电流运算放大器
ISL28256FAZ-T7
型号： ISL28256FAZ-T7
厂家： Intersil    Intersil
描述：

39uA Micropower Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
39uA微单和双精密轨到轨输入输出（ RRIO ），低输入偏置电流运算放大器

运算放大器
文件： 总14页 (文件大小：823K)
中文：  中文翻译
下载：  下载PDF数据表文档文件
 查看货源
ISL28156, ISL28256  
®
Data Sheet  
February 27, 2007  
FN6154.2  
39µA Micropower Single and Dual  
Precision Rail-to-Rail Input-Output (RRIO)  
Low Input Bias Current Op Amps  
Features  
• 39µA typical supply current  
• 5nA max input bias current  
The ISL28156 and ISL28256 are micropower precision  
operational amplifiers optimized for single supply operation  
at 5V and can operated down to 2.4V.  
• 250kHz gain bandwidth product (A = 1)  
V
• 2.4V to 5.5V single supply voltage range  
• Rail-to-rail input and output  
These devices feature an Input Range Enhancement Circuit  
(IREC) which enables them to maintain CMRR performance  
for input voltages greater than the positive supply. The input  
signal is capable of swinging 0.5V above a 5.0V supply (0.25  
for a 2.5V supply) and to within 10mV from ground. The  
output operation is rail-to-rail.  
• Enable pin (ISL28156 only)  
• Pb-free plus anneal available (RoHS compliant)  
Applications  
• Battery- or solar-powered systems  
• 4mA to 20mA current loops  
• Handheld consumer products  
• Medical devices  
The 1/f corner of the voltage noise spectrum is at 1kHz. This  
results in low frequency noise performance which can only  
be found on devices with an order of magnitude higher  
supply current.  
ISL28156 and ISL28256 can be operated from one lithium  
cell or two Ni-Cd batteries. The input range includes both  
positive and negative rail. The output swings to both rails.  
• Sensor amplifiers  
• ADC buffers  
• DAC output amplifiers  
Ordering Information  
TAPE  
PART NUMBER  
(Note)  
PART  
MARKING  
AND  
REEL  
PACKAGE  
(Pb-Free)  
PKG.  
DWG. #  
ISL28156FHZ-T7 GABV  
ISL28156FBZ 28156FBZ  
ISL28156FBZ-T7 28156FBZ 7” (1k pcs) 8 Ld SOIC  
7” (3k pcs) 6 Ld SOT-23 MDP0038  
97/Tube 8 Ld SOIC  
MDP0027  
MDP0027  
MDP0027  
Coming Soon  
7” (1k pcs) 8 Ld SOIC  
ISL28256FAZ-T7  
Coming Soon  
7”  
8 Ld MSOP MDP0043  
ISL28256FAZ-T7  
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.  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright © Intersil Americas Inc. 2006, 2007. All Rights Reserved.  
1
All other trademarks mentioned are the property of their respective owners.  
ISL28156, ISL28256  
Pinouts  
ISL28156  
(6 LD SOT-23)  
TOP VIEW  
ISL28156  
(8 LD SOIC)  
TOP VIEW  
NC  
IN-  
IN+  
V-  
1
2
3
4
8
7
6
5
ENABLE  
V+  
OUT  
V-  
1
2
3
6
5
4
V+  
ENABLE  
IN-  
-
+
+
-
OUT  
NC  
IN+  
ISL28256  
(8 LD SOIC)  
TOP VIEW  
ISL28256  
(8 LD MSOP) Coming Soon  
TOP VIEW  
OUT_A  
IN-_A  
IN+_A  
V-  
1
2
3
4
8
7
6
5
V+  
OUT_A  
IN-_A  
IN+_A  
V-  
1
2
3
4
8
7
6
5
V+  
OUT_B  
IN-_B  
IN+_B  
OUT_B  
IN-_B  
IN+_B  
-
+
- +  
+
-
+ -  
FN6154.2  
February 27, 2007  
2
ISL28156, ISL28256  
Absolute Maximum Ratings (T = +25°C)  
Thermal Information  
A
Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V  
Supply Turn On Voltage Slew Rate . . . . . . . . . . . . . . . . . . . . . 1V/μs  
Differential Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA  
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5V  
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . V- - 0.5V to V+ + 0.5V  
ESD tolerance, Human Body Model . . . . . . . . . . . . . . . . . . . . . .3kV  
ESD tolerance, Machine Model . . . . . . . . . . . . . . . . . . . . . . . . .300V  
Thermal Resistance  
θ
(°C/W)  
JA  
6 Ld SOT-23 Package . . . . . . . . . . . . . . . . . . . . . . .  
6 Ld SO Package . . . . . . . . . . . . . . . . . . . . . . . . . .  
8 Ld MSOP Package . . . . . . . . . . . . . . . . . . . . . . . .  
Output Short-Circuit Duration . . . . . . . . . . . . . . . . . . . . . . .Indefinite  
Ambient Operating Temperature Range . . . . . . . . .-40°C to +125°C  
Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C  
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . +125°C  
230  
110  
115  
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the  
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.  
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests  
are at the specified temperature and are pulsed tests, therefore: T = T = T  
A
J
C
Electrical Specifications  
V
= 5V, V = 0V,V  
= 2.5V, T = +25°C unless otherwise specified.  
CM A  
+
-
Boldface limits apply over the operating temperature range, -40°C to +125°C, temperature data guaranteed by  
characterization  
PARAMETER  
DESCRIPTION  
Input Offset Voltage  
CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
V
8 Ld SO  
-120  
-7  
120  
µV  
OS  
-200  
250  
6 Ld SOT-23  
-400  
-450  
-7  
400  
450  
µV  
µV/°C  
nA  
ΔV  
Input Offset Drive vs Temperature  
Input Offset Current  
1.5  
OS  
------------------  
ΔTime  
I
-1.5  
-5  
0.34  
1.14  
1.2  
2.5  
OS  
I
Input Bias Current  
-2  
5
nA  
B
-3.5  
5
E
Input Noise Voltage Density  
F
F
= 1kHz  
= 1kHz  
46  
nV/√Hz  
pA/√Hz  
V
N
O
O
I
Input Noise Current Density  
0.14  
N
CMIR  
Input Common-Mode Voltage Range  
Common-Mode Rejection Ratio  
0
5
CMRR  
V
V
V
V
= 0V to 5V  
80  
75  
110  
104  
412  
70  
dB  
CM  
PSRR  
Power Supply Rejection Ratio  
Large Signal Voltage Gain  
= 2.4V to 5V  
90  
75  
dB  
V/mV  
V/mV  
mV  
mV  
V
S
A
= 0.5V to 4.5V, R = 100kΩ  
200  
175  
VOL  
O
O
L
= 0.5V to 4.5V, R = 1kΩ  
35  
30  
L
V
Maximum Output Voltage Swing  
Output low, R = 100kΩ  
3
6
8
OUT  
L
Output low, R = 1kΩ  
130  
4.985  
4.88  
150  
200  
L
Output high, R = 100kΩ  
4.992  
4.99  
L
Output high, R = 1kΩ  
4.85  
V
L
4.8  
SR  
Slew Rate  
0.05  
250  
39  
V/µs  
kHz  
µA  
GBW  
Gain Bandwidth Product  
Supply Current, Enabled  
A = 1  
V
I
29  
47  
S,ON  
18  
56  
I
Supply Current, Disabled  
10  
14  
µA  
S,OFF  
16  
FN6154.2  
February 27, 2007  
3
ISL28156, ISL28256  
Electrical Specifications  
V
= 5V, V = 0V,V = 2.5V, T = +25°C unless otherwise specified.  
CM A  
+
-
Boldface limits apply over the operating temperature range, -40°C to +125°C, temperature data guaranteed by  
characterization (Continued)  
PARAMETER  
DESCRIPTION  
CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
I +  
Short-Circuit Output Current  
R
R
= 10Ω  
= 10Ω  
28  
23  
31  
mA  
O
L
L
I -  
Short-Circuit Output Current  
24  
26  
mA  
O
18  
V
V
V
Supply Operating Range  
Enable Pin High Level  
Enable Pin Low Level  
Enable Pin Input Current  
Guaranteed by PSRR test  
2.4  
5
V
V
SUPPLY  
ENH  
2
0.8  
V
ENL  
I
I
t
t
V
V
= 5V  
= 0V  
0.7  
10  
1
1.2  
1.2  
µA  
ENH  
EN  
EN  
Enable Pin Input Current  
16  
25  
30  
nA  
µs  
µs  
ENL  
EN  
Enable to output on-state delay time  
(ISL28156)  
Vout = 1V (enable state); V  
Low  
= High to  
10.8  
0.1  
EN  
Enable to output off-state delay time  
(ISL28156)  
Vout = OV (disabled state) V  
High  
= Low to  
EN  
EN  
Typical Performance Curves  
8
7
3
2
R
= 1k  
C
= 63.3pF  
L
6
L
L
1
0
5
C
= 55.3pF  
= 49.3pF  
= 43.3pF  
= 38.3pF  
4
C
L
3
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
R
L
= 10k  
= 100k  
2
C
L
1
C
L
R
0
L
-1  
-2  
-3  
-4  
C
= 34.3pF  
L
A
= 1  
A
= 1  
V
V
-5  
-6  
-7  
-8  
C
V
= 16.3pF  
= 10mV  
R
V
= 10k  
L
L
= 10mV  
OUT  
PP  
OUT  
PP  
10k  
FREQUENCY (Hz)  
1k  
100k  
1M  
1k  
10k  
100k  
1M  
FREQUENCY (Hz)  
FIGURE 2. GAIN vs FREQUENCY vs C  
L
FIGURE 1. GAIN vs FREQUENCY vs RL  
1
0
70  
V
= 2.4V  
S
Rf = 1M, Rg = 1k, R = 10k  
R
C
= 10k  
L
L
60  
50  
40  
30  
20  
10  
0
= 16.3pF  
L
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
-9  
V
= 5V  
S
V
= 10mV  
PP  
OUT  
Rf = 100k, Rg = 1k, R = 10k  
L
Rf = 9.09, Rg = 1k, R = INF  
A
= 1  
L
V
R
= 10k  
L
V
= 10mV  
PP  
OUT  
Rf = 0, Rg = INF, R = 10k  
L
-10  
100  
1k  
10k  
100k  
1M  
1k  
10k  
FREQUENCY (Hz)  
100k  
1M  
FREQUENCY (Hz)  
FIGURE 4. GAIN vs FREQUENCY vs V  
FIGURE 3. CLOSED LOOP GAIN vs FREQUENCY  
S
FN6154.2  
February 27, 2007  
4
ISL28156, ISL28256  
Typical Performance Curves (Continued)  
3
2
1
0
V
= 10mV  
OUT  
V
= 50mV  
OUT  
1
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
-9  
V
= 1V  
OUT  
0
V
= 10mV  
OUT  
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
V
= 100mV  
OUT  
V
= 1V  
OUT  
V
= 50mV  
OUT  
A
= 1  
A = 1  
V
V
R
C
= 1k  
R
C
= 10k  
L
L
L
L
V
= 100mV  
= 16.3pF  
= 16.3pF  
OUT  
1k  
10k  
100k  
1M  
1k  
10k  
FREQUENCY (Hz)  
100k  
1M  
FREQUENCY (Hz)  
FIGURE 6. GAIN vs FREQUENCY vs V  
OUT  
FIGURE 5. GAIN vs FREQUENCY vs V  
OUT  
1
0
10  
0
V
= 10mV  
OUT  
A
= 1  
V
R
C
= 10k  
= 16.3pF  
L
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
-9  
V
= 1V  
OUT  
V
= 2.4V  
L
S
-10  
-20  
-30  
-40  
-50  
-60  
-70  
V
= 1V  
PP  
CM  
V
= 50mV  
OUT  
V
= 5V  
S
V
= 100mV  
OUT  
A
= 1  
V
R
C
= 100k  
L
L
= 16.3pF  
1k  
10k  
100k  
1M  
100  
1k  
10k  
FREQUENCY (Hz)  
100k  
1M  
FREQUENCY (Hz)  
FIGURE 7. GAIN vs FREQUENCY vs V  
FIGURE 8. CMRR vs FREQUENCY  
OUT  
10  
0
10  
A
= 1  
A
= 1  
V
V
0
-10  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
R
= 1k  
R
= 1k  
L
L
L
L
-10  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
-90  
C
V
= 16.3pF  
= 1V  
PSRR-  
C
= 16.3pF  
= 1V  
PSRR-  
V
V
OUT  
PP  
OUT  
PP  
V
=5V  
= 2.4V  
S
S
PSRR+  
PSRR+  
100k  
100  
1k  
10k  
FREQUENCY (Hz)  
FIGURE 10. PSRR vs FREQUENCY; VS = 5V  
100k  
1M  
100  
1k  
10k  
FREQUENCY (Hz)  
1M  
FIGURE 9. PSRR vs FREQUENCY; VS = 2.4V  
FN6154.2  
February 27, 2007  
5
ISL28156, ISL28256  
Typical Performance Curves (Continued)  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
160  
140  
120  
100  
80  
60  
40  
20  
0
1
10  
100  
1k  
10k  
1
10  
100  
1k  
10k  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
FIGURE 11. INPUT VOLTAGE NOISE vs FREQUENCY  
FIGURE 12. INPUT CURRENT NOISE vs FREQUENCY  
24  
0
RF = R =R = 10k  
A
= 1000  
i
L
V
AV = 2  
CL = 16.3pF  
VOUT = 10mV  
R = 100k  
22  
20  
18  
16  
14  
12  
10  
-0.2  
-0.4  
-0.6  
-0.8  
-1  
F
R = 100  
i
R
= 10k  
PP  
L
-1.2  
-1.4  
0
50  
100  
150  
200  
250  
300  
350  
400  
0
1
2
3
4
5
6
7
8
9
10  
TIME (µs)  
TIME (s)  
FIGURE 14. SMALL SIGNAL STEP RESPONSE  
FIGURE 13. 1 TO 10Hz INPUT NOISE  
0.6  
0.4  
0.2  
0
6
5
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
V-ENABLE  
4
3
R
= R =R = 10k  
i L  
= 2  
F
A
V
2
C
= 16.3pF  
= 10mV  
L
-0.2  
-0.4  
-0.6  
R
= R =R = 10k  
i L  
= 2  
F
V
1
OUT  
PP  
A
V
C
= 16.3pF  
L
0
V
= 1V  
PP  
OUT  
V
OUT  
10  
-1  
-0.2  
90 100  
0
100  
200  
TIME (µs)  
300  
400  
0
20  
30  
40  
50  
60  
70  
80  
TIME (µs)  
FIGURE 15. LARGE SIGNAL STEP RESPONSE  
FIGURE 16. ENABLE TO OUTPUT DELAY  
FN6154.2  
February 27, 2007  
6
ISL28156, ISL28256  
Typical Performance Curves (Continued)  
14.5  
13.5  
12.5  
11.5  
10.5  
9.5  
58  
53  
48  
43  
38  
33  
28  
23  
n = 1000  
n = 1000  
MAX  
MAX  
MEDIAN  
MEDIAN  
8.5  
MIN  
7.5  
MIN  
6.5  
-40  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
-20  
0
20  
40  
60  
80  
100  
120  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
FIGURE 17. SUPPLY CURRENT ENABLED vs TEMPERATURE  
= ±2.5V  
FIGURE 18. SUPPLY CURRENT DISABLED vs  
V
TEMPERATURE V = ±2.5V  
S
S
380  
280  
180  
80  
400  
n = 1000  
n = 1000  
MAX  
MAX  
300  
200  
100  
0
MEDIAN  
MEDIAN  
-20  
-120  
-220  
-320  
-420  
-100  
-200  
-300  
-400  
MIN  
80  
MIN  
-40  
-20  
0
20  
40  
60  
80  
C)  
100  
120  
-40  
-20  
0
20  
40  
60  
100  
120  
TEMPERATURE (  
°
TEMPERATURE (°C)  
FIGURE 19. VIO SO8 PACKAGE vs TEMPERATURE V = ±2.5V  
S
FIGURE 20. VIO SO8 PACKAGE vs TEMPERATURE V = ±1.2V  
S
380  
400  
n = 1000  
280  
180  
80  
MAX  
300  
MAX  
n = 1000  
MEDIAN  
200  
100  
MEDIAN  
-20  
0
-100  
-200  
-120  
-220  
-320  
-420  
MIN  
80  
MIN  
-300  
-400  
-40  
-20  
0
20  
40  
60  
100  
120  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
FIGURE 21. VIO SOT-23 PACKAGE vs TEMPERATURE  
= ±2.5V  
FIGURE 22. VIO SOT-23 PACKAGE vs TEMPERATURE  
= ±1.2V  
V
V
S
S
FN6154.2  
February 27, 2007  
7
ISL28156, ISL28256  
Typical Performance Curves (Continued)  
5
4
5
4
n = 1000  
n = 1000  
MAX  
3
MAX  
3
2
1
2
MEDIAN  
MEDIAN  
0
1
-1  
-2  
-3  
MIN  
MIN  
0
-1  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
FIGURE 23. I  
vs TEMPERATURE V = ±2.5V  
S
FIGURE 24. I  
vs TEMPERATURE V = ±2.5V  
S
BIAS+  
BIAS-  
10  
2
n = 1000  
8
6
n = 1000  
1
MAX  
MAX  
0
-1  
-2  
-3  
-4  
MEDIAN  
4
MEDIAN  
2
0
-2  
MIN  
MIN  
-4  
-40  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
-20  
0
20  
40  
60  
80  
100  
120  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
FIGURE 26. I  
vs TEMPERATURE V = ±1.2V  
S
FIGURE 25. I  
vs TEMPERATURE V = ±1.5V  
S
BIAS-  
BIAS+  
4
4
2
0
n = 1000  
n = 1000  
3
2
MAX  
MAX  
1
0
-2  
-1  
-2  
-3  
-4  
-5  
-6  
MEDIAN  
MEDIAN  
-4  
-6  
MIN  
MIN  
-8  
-10  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
FIGURE 27. IOS vs TEMPERATURE V = ±2.5V  
S
FIGURE 28. IOS vs TEMPERATURE V = ±1.5V  
S
FN6154.2  
February 27, 2007  
8
ISL28156, ISL28256  
Typical Performance Curves (Continued)  
135  
130  
125  
120  
115  
110  
105  
100  
95  
130  
125  
120  
115  
110  
105  
100  
95  
n = 1000  
MAX  
n = 1000  
MAX  
MEDIAN  
MEDIAN  
MIN  
90  
MIN  
90  
85  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
FIGURE 29. CMRR vs TEMPERATURE V+ = ±2.5V, ±1.5V  
FIGURE 30. PSRR vs TEMPERATURE ±1.2V to ±2.5V  
4.900  
4.9984  
n = 1000  
n = 1000  
4.895  
MAX  
4.9982  
4.9980  
4.9978  
4.9976  
4.9974  
4.9972  
4.9970  
4.9968  
4.890  
4.885  
4.880  
4.875  
4.870  
4.865  
4.860  
4.855  
4.850  
MAX  
MEDIAN  
MEDIAN  
MIN  
MIN  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
FIGURE 31. V  
HIGH vs TEMPERATURE V = ±2.5V, R = 1k  
FIGURE 32. V  
HIGH V = ±2.5V, R = 100k  
OUT S L  
OUT  
S
L
4.9984  
4.9982  
4.9980  
4.9978  
4.9976  
4.9974  
4.9972  
4.9970  
4.9968  
5
4.5  
4
n = 1000  
n = 1000  
MAX  
MAX  
MEDIAN  
MEDIAN  
3.5  
3
MIN  
MIN  
2.5  
-40  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
-20  
0
20  
40  
60  
80  
100  
120  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
FIGURE 33. V  
LOW V = ±2.5V, R = 1k  
FIGURE 34. V  
LOW V = ±2.5V, R = 100k  
OUT S L  
OUT  
S
L
FN6154.2  
February 27, 2007  
9
ISL28156, ISL28256  
Pin Descriptions  
ISL28156  
ISL28156  
ISL28256  
(6 Ld SOT-23)  
(8 Ld SO)  
(8 Ld MSOP)  
PIN NAME  
NC  
FUNCTION  
EQUIVALENT CIRCUIT  
1, 5  
2
Not connected  
Inverting input  
4
2 (A)  
6 (B)  
IN-  
V+  
IN-  
IN+  
V-  
Circuit 1  
3
3
3 (A)  
5 (B)  
IN+  
Non-inverting  
input  
(See circuit 1)  
2
1
4
6
4
V-  
Negative supply  
Output  
V+  
1 (A)  
7 (B)  
OUT  
OUT  
V-  
Circuit 2  
6
5
7
8
8
V+  
Positive supply  
Chip enable  
V+  
ENABLE  
CE  
V-  
Circuit 3  
within one diode beyond the supply rails. They also contain  
back-to-back diodes across the input terminals. For  
Applications Information  
applications where the input differential voltage is expected to  
exceed 0.5V, external series resistors must be used to ensure  
the input currents never exceed 5mA (Figure 35).  
Introduction  
The ISL28156 is a single BiMOS rail-to-rail input, output  
(RRIO) operational amplifier with an enable feature. The  
ISL28256 is a dual version without the enable feature. Both  
devices are designed to operate from single supply (2.4V to  
5.0V) or dual supplies (±1.2V to ±2.5V) while drawing only  
39μA of supply current per amplifier. This combination of low  
power and precision performance makes this device suitable  
for a variety of low power applications including battery  
powered systems.  
-
V
R
OUT  
IN  
V
R
IN  
+
L
FIGURE 35. INPUT CURRENT LIMITING  
Rail-to-Rail Input/Output  
Enable/Disable Feature  
The ISL28156 offers an EN pin that disables the device  
when pulled up to at least 2.0V. In the disabled state (output  
in a high impedance state), the part consumes typically  
10µA. By disabling the part, multiple ISL28156 parts can be  
connected together as a MUX. In this configuration, the  
outputs are tied together in parallel and a channel can be  
selected by the EN pin. The EN pin also has an internal pull  
down. If left open, the EN pin will pull to the negative rail and  
the device will be enabled by default.  
These devices feature bipolar inputs which have an input  
common mode range that extends up to 0.5V beyond the v+  
rail, and to within 10mV of the V- rail. The CMOS outputs  
typically swing to within about 4mV of the supply rails with a  
100kΩ load. The NMOS sinks current to swing the output in  
the negative direction. The PMOS sources current to swing the  
output in the positive direction.  
Input Protection  
All input terminals have internal ESD protection diodes to both  
positive and negative supply rails, limiting the input voltage to  
FN6154.2  
February 27, 2007  
10  
ISL28156, ISL28256  
The loading effects of the feedback resistors of the disabled  
amplifier must be considered when multiple amplifier outputs  
are connected together.  
where:  
• T  
= Maximum ambient temperature  
MAX  
• θ = Thermal resistance of the package  
JA  
Using Only One Channel  
• PD  
= Maximum power dissipation of 1 amplifier  
MAX  
The ISL28256 is a dual op amp. If the application only  
requires one channel, the user must configure the unused  
channel to prevent it from oscillating. The unused channel  
will oscillate if the input and output pins are floating. This will  
result in higher than expected supply currents and possible  
noise injection into the channel being used. The proper way  
to prevent this oscillation is to short the output to the  
negative input and ground the positive input (as shown in  
Figure 36).  
• V = Supply voltage  
S
• I  
= Maximum supply current of 1 amplifier  
= Maximum output voltage swing of the  
MAX  
• V  
OUTMAX  
application  
• R = Load resistance  
L
-
+
FIGURE 36. PREVENTING OSCILLATIONS IN UNUSED  
CHANNELS  
Current Limiting  
These devices have no internal current-limiting circuitry. If  
the output is shorted, it is possible to exceed the Absolute  
Maximum Rating for output current or power dissipation,  
potentially resulting in the destruction of the device.  
Power Dissipation  
It is possible to exceed the +125°C maximum junction  
temperatures under certain load and power-supply  
conditions. It is therefore important to calculate the  
maximum junction temperature (T  
) for all applications  
JMAX  
to determine if power supply voltages, load conditions, or  
package type need to be modified to remain in the safe  
operating area. These parameters are related as follows:  
(EQ. 1)  
T
= T  
+ (θ xPD  
)
MAXTOTAL  
JMAX  
MAX  
JA  
where:  
• P  
is the sum of the maximum power  
MAX  
DMAXTOTAL  
dissipation of each amplifier in the package (PD  
)
• PD  
for each amplifier can be calculated as follows:  
MAX  
V
OUTMAX  
R
L
----------------------------  
PD  
= 2*V × I  
+ (V - V  
) ×  
MAX  
S
SMAX  
S
OUTMAX  
(EQ. 2)  
FN6154.2  
February 27, 2007  
11  
ISL28156, ISL28256  
SOT-23 Package Family  
MDP0038  
e1  
D
SOT-23 PACKAGE FAMILY  
A
MILLIMETERS  
SOT23-5  
6
4
N
SYMBOL  
SOT23-6  
1.45  
0.10  
1.14  
0.40  
0.14  
2.90  
2.80  
1.60  
0.95  
1.90  
0.45  
0.60  
6
TOLERANCE  
MAX  
A
A1  
A2  
b
1.45  
0.10  
1.14  
0.40  
0.14  
2.90  
2.80  
1.60  
0.95  
1.90  
0.45  
0.60  
5
±0.05  
E1  
E
±0.15  
2
3
±0.05  
0.15  
2X  
C
D
c
±0.06  
1
2
3
0.20  
2X  
C
D
Basic  
5
e
E
Basic  
E1  
e
Basic  
0.20  
C
A-B  
D
M
B
b
NX  
Basic  
e1  
L
Basic  
±0.10  
L1  
N
Reference  
Reference  
Rev. F 2/07  
0.15  
2X  
C
A-B  
1
3
D
NOTES:  
C
1. Plastic or metal protrusions of 0.25mm maximum per side are not  
included.  
A2  
SEATING  
PLANE  
2. Plastic interlead protrusions of 0.25mm maximum per side are not  
included.  
A1  
0.10  
NX  
C
3. This dimension is measured at Datum Plane “H”.  
4. Dimensioning and tolerancing per ASME Y14.5M-1994.  
5. Index area - Pin #1 I.D. will be located within the indicated zone  
(SOT23-6 only).  
6. SOT23-5 version has no center lead (shown as a dashed line).  
(L1)  
H
A
GAUGE  
PLANE  
0.25  
c
+3°  
-0°  
L
0°  
FN6154.2  
February 27, 2007  
12  
ISL28156, ISL28256  
Small Outline Package Family (SO)  
A
D
h X 45°  
(N/2)+1  
N
A
PIN #1  
I.D. MARK  
E1  
E
c
SEE DETAIL “X”  
1
(N/2)  
B
L1  
0.010 M  
C A B  
e
H
C
A2  
A1  
GAUGE  
PLANE  
SEATING  
PLANE  
0.010  
L
4° ±4°  
0.004 C  
b
0.010 M  
C
A
B
DETAIL X  
MDP0027  
SMALL OUTLINE PACKAGE FAMILY (SO)  
INCHES  
SO16  
(0.150”)  
SO16 (0.300”)  
(SOL-16)  
SO20  
SO24  
(SOL-24)  
SO28  
(SOL-28)  
SYMBOL  
SO-8  
0.068  
0.006  
0.057  
0.017  
0.009  
0.193  
0.236  
0.154  
0.050  
0.025  
0.041  
0.013  
8
SO-14  
0.068  
0.006  
0.057  
0.017  
0.009  
0.341  
0.236  
0.154  
0.050  
0.025  
0.041  
0.013  
14  
(SOL-20)  
0.104  
0.007  
0.092  
0.017  
0.011  
0.504  
0.406  
0.295  
0.050  
0.030  
0.056  
0.020  
20  
TOLERANCE  
MAX  
NOTES  
A
A1  
A2  
b
0.068  
0.006  
0.057  
0.017  
0.009  
0.390  
0.236  
0.154  
0.050  
0.025  
0.041  
0.013  
16  
0.104  
0.007  
0.092  
0.017  
0.011  
0.406  
0.406  
0.295  
0.050  
0.030  
0.056  
0.020  
16  
0.104  
0.007  
0.092  
0.017  
0.011  
0.606  
0.406  
0.295  
0.050  
0.030  
0.056  
0.020  
24  
0.104  
0.007  
0.092  
0.017  
0.011  
0.704  
0.406  
0.295  
0.050  
0.030  
0.056  
0.020  
28  
-
±0.003  
±0.002  
±0.003  
±0.001  
±0.004  
±0.008  
±0.004  
Basic  
-
-
-
c
-
D
1, 3  
E
-
E1  
e
2, 3  
-
L
±0.009  
Basic  
-
L1  
h
-
Reference  
Reference  
-
N
-
Rev. M 2/07  
NOTES:  
1. Plastic or metal protrusions of 0.006” maximum per side are not included.  
2. Plastic interlead protrusions of 0.010” maximum per side are not included.  
3. Dimensions “D” and “E1” are measured at Datum Plane “H”.  
4. Dimensioning and tolerancing per ASME Y14.5M-1994  
FN6154.2  
February 27, 2007  
13  
ISL28156, ISL28256  
Mini SO Package Family (MSOP)  
MDP0043  
0.25 M C A B  
A
MINI SO PACKAGE FAMILY  
D
(N/2)+1  
MILLIMETERS  
N
SYMBOL  
MSOP8  
1.10  
0.10  
0.86  
0.33  
0.18  
3.00  
4.90  
3.00  
0.65  
0.55  
0.95  
8
MSOP10  
1.10  
0.10  
0.86  
0.23  
0.18  
3.00  
4.90  
3.00  
0.50  
0.55  
0.95  
10  
TOLERANCE  
Max.  
NOTES  
A
A1  
A2  
b
-
±0.05  
-
E
E1  
PIN #1  
I.D.  
±0.09  
-
+0.07/-0.08  
±0.05  
-
c
-
D
±0.10  
1, 3  
1
B
(N/2)  
E
±0.15  
-
E1  
e
±0.10  
2, 3  
Basic  
-
e
H
C
L
±0.15  
-
SEATING  
PLANE  
L1  
N
Basic  
-
Reference  
-
M
C A B  
b
0.08  
0.10 C  
Rev. D 2/07  
N LEADS  
NOTES:  
1. Plastic or metal protrusions of 0.15mm maximum per side are not  
included.  
L1  
2. Plastic interlead protrusions of 0.25mm maximum per side are  
not included.  
A
3. Dimensions “D” and “E1” are measured at Datum Plane “H”.  
4. Dimensioning and tolerancing per ASME Y14.5M-1994.  
c
SEE DETAIL "X"  
A2  
GAUGE  
PLANE  
0.25  
L
DETAIL X  
A1  
3° ±3°  
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  
FN6154.2  
February 27, 2007  
14  

相关型号：

ISL28256FBZ

 39レA Micropower Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
INTERSIL

ISL28256FBZ

 DUAL OP-AMP, 250uV OFFSET-MAX, 0.25MHz BAND WIDTH, PDSO8, ROHS COMPLIANT, SOIC-8
RENESAS

ISL28256FBZ-T7

 39レA Micropower Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
INTERSIL

ISL28256FBZ-T7

 DUAL OP-AMP, 250uV OFFSET-MAX, 0.25MHz BAND WIDTH, PDSO8, ROHS COMPLIANT, SOIC-8
RENESAS

ISL28256FUZ

 39レA Micropower Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
INTERSIL

ISL28256FUZ

 DUAL OP-AMP, 0.25MHz BAND WIDTH, PDSO8, ROHS COMPLIANT, MSOP-8
RENESAS

ISL28256FUZ-T7

 39レA Micropower Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
INTERSIL

ISL28256FUZ-T7

 DUAL OP-AMP, 0.25MHz BAND WIDTH, PDSO8, ROHS COMPLIANT, MSOP-8
RENESAS

ISL28258

 34レA Micro-power Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
INTERSIL

ISL28258FAZ-T7

 DUAL OP-AMP, 650uV OFFSET-MAX, 0.2MHz BAND WIDTH, PDSO8, ROHS COMPLIANT, MSOP-8
RENESAS

ISL28258FBZ

 34レA Micro-power Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
INTERSIL

ISL28258FBZ-T7

 34レA Micro-power Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
INTERSIL
©2020 ICPDF网 联系我们和版权申明