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Número de pieza | ISL21009 | |
Descripción | Low Noise Voltage References | |
Fabricantes | Intersil Corporation | |
Logotipo | ||
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PRELIMINARY
Data Sheet
February 14, 2007
ISL21009
FN6327.1
Precision, Low Noise FGA™ Voltage
References
The ISL21009 FGA™ voltage references are extremely low
power, high precision, and low noise voltage references
fabricated on Intersil’s proprietary Floating Gate Analog
technology. The ISL21009 features very low noise (4µVP-P
for 0.1Hz to 10Hz), low operating current (180µA, Max), and
3ppm/°C of temperature drift. In addition, the ISL21009
family features guaranteed initial accuracy as low as ±0.5mV
This combination of high initial accuracy, low drift, and low
output noise performance of the ISL21009 enables versatile
high performance control and data acquisition applications
with low power consumption.
Available Options
PART NUMBER
ISL21009BFB812Z
Coming Soon
ISL21009CFB812Z
www.DataSheet4U.comComing Soon
ISL21009DFB812Z
Coming Soon
ISL21009BFB825Z
ISL21009CFB825Z
ISL21009DFB825Z
ISL21009BFB850Z
ISL21009CFB850Z
ISL21009DFB850Z
VOUT
OPTION
(V)
1.250
INITIAL
ACCURACY
(mV)
±0.5
TEMPCO.
(ppm/°C)
3
1.250
±1.0
5
1.250
±2.0
10
2.500
2.500
2.500
5.000
5.000
5.000
±0.5
±1.0
±2.0
±0.5
±1.0
±2.0
3
5
10
3
5
10
Features
• Output Voltages . . . . . . . . . . . . . . . 1.25V, 2.500V, 5.000V
• Initial Accuracy . . . . . . . . . . . . . .±0.5mV, ±1.0mV, ±2.0mV
• Input Voltage Range. . . . . . . . . . . . . . . . . . . . Up to 16.5V
• Output Voltage Noise . . . . . . . . . . 4uVP-P (0.1Hz to 10Hz)
• Supply Current . . . . . . . . . . . . . . . . . . . . . . . .180µA (Max)
• Temperature Coefficient . . . 3ppm/°C, 5ppm/°C, 10ppm/°C
• Output Current Capability. . . . . . . . . . . . . . . . . . . . ±7.0mA
• Operating Temperature Range. . . . . . . . . -40°C to +125°C
• Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ld SOIC
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• High Resolution A/Ds and D/As
• Digital Meters
• Bar Code Scanners
• Basestations
• Battery Management/Monitoring
• Industrial/Instrumentation Equipment
Pinout
ISL21009
(8 LD SOIC)
TOP VIEW
GND or NC 1
VIN 2
DNC 3
GND 4
8 DNC
7 DNC
6 VOUT
5 TRIM or NC
Pin Descriptions
PIN NUMBER
1
4
2
6
5
3,7,8
PIN NAME
GND or NC
GND
VIN
VOUT
TRIM
DNC
DESCRIPTION
Can be either Ground or No Connect
Ground Connection
Power Supply Input Connection
Voltage Reference Output Connection
Allows user trim typically ±2.5%. Leave Unconnected when unused.
Do Not Connect; Internal Connection – Must Be Left Floating
1 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. 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page ISL21009
Typical Performance Curves (ISL21009-25) (REXT = 100kΩ) (Continued)
0.10
0.08
0.06
0.04
0.02
0.00
+125°C
-40°C
-0.02
-0.04
-0.06
+25°C
-0.08
-0.10
-7 -6 -5 -4 -3 -2 -1 0 1 2 3
SINKING
OUTPUT CURRENT (mA)
4567
SOURCING
FIGURE 6. LOAD REGULATION
2.5002
2.5001
2.5000
2.4999
2.4998
2.4997
2.4996
2.4995
2.4994
2.4993
-40
-20
0
UNIT 3
UNIT 2
UNIT 1
20 40 60 80
TEMPERATURE (°C)
100 120 140
FIGURE 7. VOUT vs TEMPERATURE
0
-10 500kHz PEAK
-20 VIN (DC) = 10V
NO LOAD
-30
-40
-50
-60 10nF
-70
-80 100nF
-90
-100
1
10 100 1k 10k 100k
FREQUENCY (Hz)
1nF
1M 10M
FIGURE 8. PSRR AT DIFFERENT CAPACITIVE LOADS
FIGURE 9. LINE TRANSIENT RESPONSE, NO CAPACITIVE
LOAD
FIGURE 10. LINE TRANSIENT RESPONSE, 0.001µF LOAD
CAPACITANCE
5
5.2
4.8
4.4
4.0
3.6
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0
0
VIN
HIGH IIN
MEDIUM IIN
LOW IIN
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
TIME (ms)
FIGURE 11. TURN ON TIME
FN6327.1
February 14, 2007
5 Page ISL21009
Typical Application Circuits
VIN = +5.0V
R = 200Ω
2N2905
VIN
ISL21009 VOUT
VOUT = 2.50V
GND
2.5V/50mA
0.001µF
FIGURE 31. PRECISION 2.5V 50mA REFERENCE
+3.5 to 16.5V
VIN
VOUT
ISL21009-25
VOUT = 2.50V
GND
0.1µF
10µF
2-WIRE BUS
VCC RH
X9119
SDA
SCL
VSS RL
0.001µF
VOUT
(UNBUFFERED)
+
EL8178
–
VOUT
(BUFFERED)
FIGURE 32. 2.5V FULL SCALE LOW-DRIFT, LOW NOISE, 10-BIT ADJUSTABLE VOLTAGE SOURCE
11 FN6327.1
February 14, 2007
11 Page |
Páginas | Total 13 Páginas | |
PDF Descargar | [ Datasheet ISL21009.PDF ] |
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