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PDF ISL21090 Data sheet ( Hoja de datos )
| Número de pieza | ISL21090 | |
| Descripción | Precision Voltage Reference | |
| Fabricantes | Intersil | |
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Ultra Low Noise, Precision Voltage Reference
ISL21090
The ISL21090 is a ultra low noise, high DC accuracy precision
voltage reference with wide input voltage range. The ISL21090
uses the new Intersil Advanced Bipolar technology to achieve
sub 1.0µVP-P (1.25V option) 0.1Hz to 10Hz noise with an initial
voltage accuracy of 0.02% (2.5V option).
The ISL21090 offers 1.25V, 2.5V, 5.0V and 7.5V output voltage
options with 7ppm/°C temperature coefficient and also
provides excellent line and load regulation. These devices are
offered in an 8 Ld SOIC package.
The ISL21090 is ideal for high-end instrumentation, data
acquisition and processing applications requiring high DC
precision where low noise performance is critical.
Applications
• High-end instrumentation
• Precision voltage sources for data acquisition system,
industrial control, communication infrastructure
• Process control and instrumentations
• Active source for sensors
Features
• Reference output voltage option
- 1.25V, 2.5V, 5.0V and 7.5V
• Initial accuracy:
- ISL21090-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.03%
- ISL21090-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.02%
- ISL21090-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.025%
- ISL21090-75 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.035%
• Output voltage noise (0.1Hz to 10Hz) . . . . . . . . . . . . 1.0µVP-P typ
(1.25V option)
• Supply current . . . . . . . . . . . . . . . . . . . . 750µA (1.25V option)
• Temperature coefficient . . . . . . . . . . . . . . . . . . 7ppm/°C max
• Output current capability . . . . . . . . . . . . . . . . . . . . . . . . 20mA
• Line regulation . . . . . . . . . . . . . . . . . . .6ppm/V (1.25V option)
• Load regulation . . . . . . . . . . . . . . 2.5ppm/mA (1.25V option)
• Operating temperature range. . . . . . . . . . . .-40°C to +125°C
Related Literature
See AN1764, “ISL21090XXEV1Z User’s Guide”
VIN
10µF 0.1µF
1
DNC
2
VIN
3
COMP
4
GND
8
DNC
7
DNC
6
VOUT
5
TRIM
VREF
0.1µF
SERIAL CLOCK
CHIP SELECT
SERIAL DATA I/O
VDD
SCLK
CSb
SDIO
VREF
OUTxS
OUTxF
GND
DACOUTx
DAC
FIGURE 1. ISL21090 TYPICAL APPLICATION DIAGRAM
2.5010
2.5005
TYPICAL TEMPERATURE
COEFFICIENT CURVE FOR 10 UNITS
2.5000
2.4995
2.4990
2.4985
2.4980
-55 -35 -15
5 25 45 65 85 105 125 145
TEMPERATURE (°C)
FIGURE 2. VOUT vs TEMPERATURE (2.5V OPTION)
February 27, 2013
FN6993.5
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas LLC 2011-2013. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL21090
Electrical Specifications VIN = 15V (7.5V option), IOUT = 0 unless otherwise specified. Boldface limits apply over the operating
temperature range, -40°C to +125°C.
PARAMETER
DESCRIPTION
CONDITIONS
MIN MAX
(Note 7) TYP (Note 7) UNIT
VOUT
VOA
TC VOUT
Output Voltage
VOUT Accuracy @ TA = +25°C (Note 6)
Output Voltage Temperature Coefficient
(Note 8)
VIN = 15V,
VOUT = 7.5V
ISL21090 B grade
7.5 V
0.035
0.035
%
7 ppm/°C
VIN
IIN
ΔVOUT /ΔVIN
ΔVOUT/ΔIOUT
Input Voltage Range
Supply Current
Line Regulation
Load Regulation
VD Dropout Voltage (Note 9)
ISC+ Short Circuit Current
ISC- Short Circuit Current
tR Turn-on Settling Time
Ripple Rejection
VOUT = 7.5V
9 36 V
0.940 1.30
mA
VIN = 9V to 36V, VOUT = 7.5V
Sourcing: 0mA ≤ IOUT ≤ 20mA
Sinking: -10mA ≤ IOUT ≤ 0mA
VOUT = 7.5V @ 10mA
TA = +25°C, VOUT tied to GND
TA = +25°C, VOUT tied to VIN
90% of final value, CL = 1.0µF, CC = open
f = 120Hz
2.3
2.5
9
1.06
56
-69
150
90
18 ppm/V
17 ppm/mA
17 ppm/mA
1.8 V
mA
mA
µs
dB
enp-p
Output Voltage Noise
0.1Hz ≤ f ≤ 10Hz, VOUT = 7.5V
6.2 µVP-P
Vn Broadband Voltage Noise
10Hz ≤ f ≤ 1kHz, VOUT = 7.5V
4.8 µVRMS
en Noise Voltage Density
f = 1kHz, VOUT = 7.5V
150 nV/√Hz
ΔVOUT/Δt
Long Term Stability
TA = +25°C
20 ppm
NOTES:
7. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
8. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in VOUT is divided by the
temperature range; in this case, -40°C to +125°C = +165°C.
9. Dropout Voltage is the minimum VIN - VOUT differential voltage measured at the point where VOUT drops 1mV from VIN = nominal at TA = +25°C.
5 FN6993.5
February 27, 2013
5 Page 
ISL21090
Typical Performance Curves (ISL21090-2.5) (Continued)
-30
-35
-40
-45
-50
-55
-60
-65
3
+125°C
+25°C
-40°C
8 13 18 23 28
VIN (V)
FIGURE 30. SHORT-CIRCUIT TO GND
33
38
90
-40°C
80
70
60
+25°C
50
40 +125°C
30
3 8 13 18 23 28 33 38
VIN (V)
FIGURE 31. SHORT-CIRCUIT TO VIN
2.5010
TYPICAL TEMPERATURE
2.5005 COEFFICIENT CURVE FOR 10 UNITS
2.5000
2.4995
2.4990
2.4985
2.4980
-55 -35 -15 5
25 45 65 85 105 125 145
TEMPERATURE (°C)
FIGURE 32. VOUT vs TEMPERATURE, 10 UNITS
X = 10s/DIV
Y = 1µV/DIV
FIGURE 33. VOUT vs NOISE, 0.1Hz TO 10Hz
2.5000
2.4998
+25°C
2.4996
2.4994
+85°C
2.4992
2.4990
-40°C
2.4988
0 5 10 15 20 25 30 35 40
VIN (V)
FIGURE 34. DROPOUT WITH -10mA LOAD
50
40
30
20
10
0
-10
-20
-30
0
500
1000
1500
2000
2500
TIME (Hrs)
FIGURE 35. LONG TERM STABILITY
3000
11 FN6993.5
February 27, 2013
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet ISL21090.PDF ] | |
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