ISL21009CFB841Z-TK Intersil, ISL21009CFB841Z-TK Datasheet - Page 15
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ISL21009CFB841Z-TK
Manufacturer Part Number
ISL21009CFB841Z-TK
Description
IC VOLT REF FGA LV 4.096V 8-SOIC
Manufacturer
Intersil
Series
FGA™r
Datasheet
1.ISL21009DFB850Z-TK.pdf
(19 pages)
Specifications of ISL21009CFB841Z-TK
Reference Type
Series
Voltage - Output
4.096V
Tolerance
±1mV
Temperature Coefficient
5ppm/°C
Voltage - Input
3.5 ~ 16.5 V
Number Of Channels
1
Current - Quiescent
180µA
Current - Output
7mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Cathode
-
Other names
ISL21009CFB841Z-TKTR
Typical Performance Curves (ISL21009-50)
Applications Information
FGA Technology
The ISL21009 voltage reference uses 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).
GAIN IS x1000
NOISE IS 4.5µV
FIGURE 55. V
P-P
OUT
NOISE, 0.1Hz TO 10Hz
15
FIGURE 57. LOAD TRANSIENT RESPONSE
-7mA
ISL21009
(R
EXT
= 100kΩ) (Continued)
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.
Micropower Operation
The ISL21009 consumes extremely low supply current due
to the proprietary FGA technology. Low noise performance is
achieved using optimized biasing techniques. Supply current
is typically 95µA and noise is 4.5µV
low noise portable applications such as handheld meters
and instruments.
7mA
FIGURE 56. LOAD TRANSIENT RESPONSE
-50µA
P-P
benefitting precision,
50µA
September 16, 2009
FN6327.7