參數(shù)資料
型號(hào)： ISL60002BIH325Z-TK
廠商： INTERSIL CORP
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： Precision Low Power FGA⑩ Voltage References
中文描述： 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.5 V, PDSO3
封裝： ROHS COMPLIANT, PLASTIC, EIAJ, SC-74, MO-178AB, SOT-23, 3 PIN
文件頁(yè)數(shù)： 32/35頁(yè)
文件大小： 2227K
代理商： ISL60002BIH325Z-TK
32
FN8082.8
June 4, 2007
Applications Information
FGA Technology
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).
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.
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.
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.
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 116. 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.
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.
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.
High Current Application
FIGURE 114. DIFFERENT V
IN
AT ROOM TEMPERATURE
FIGURE 115. DIFFERENT V
IN
AT HIGH TEMPERATURE
2.486
2.488
2.490
2.492
2.494
2.496
2.498
2.500
2.502
0
5
10
15
20
25
30
I
LOAD
(mA)
V
O
V
IN
= 3.3V
V
IN
= 3.5V
V
IN
= 5V
2.486
2.488
2.490
2.492
2.494
2.496
2.498
2.500
2.502
0
5
10
15
20
I
LOAD
(mA)
V
O
3.2V, +85°C
3.3V, +85°C
5V, +85°C
V
IN
= +3.0V
0.001μF–0.01μF
SERIAL
BUS
V
IN
V
OUT
GND
REF IN
ENABLE
SCK
SDAT
12 to 24-BIT
A/D CONVERTER
0.01μF
10μF
FIGURE 116.
ISL60002
相關(guān)PDF資料
PDF描述
ISL60002BIH330Z-TK Precision Low Power FGA⑩ Voltage References
ISL60002CAH333Z-TK Precision Low Power FGA⑩ Voltage References
ISL60002CIH310Z-TK Precision Low Power FGA⑩ Voltage References
ISL60002CIH311Z-TK Precision Low Power FGA⑩ Voltage References
ISL60002CIH312-TK Precision Low Power FGA⑩ Voltage References
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISL60002BIH326Z 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述:
ISL60002BIH326Z-TK 功能描述:IC VREF SERIES PREC 2.6V SOT23-3 RoHS:是 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:FGA™ 標(biāo)準(zhǔn)包裝:1 系列:- 基準(zhǔn)類型:旁路，可調(diào)節(jié)，精度 輸出電壓:2.495 V ~ 36 V 容差:±1% 溫度系數(shù):標(biāo)準(zhǔn)值 34ppm/°C 輸入電壓:2.495 V ~ 36 V 通道數(shù):1 電流 - 陰極:1mA 電流 - 靜態(tài):- 電流 - 輸出:100mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:TO-236-3，SC-59，SOT-23-3 供應(yīng)商設(shè)備封裝:SOT-23-3 包裝:剪切帶 (CT) 產(chǎn)品目錄頁(yè)面:1073 (CN2011-ZH PDF) 其它名稱:296-17329-1
ISL60002BIH330Z 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述:
ISL60002BIH330Z-TK 功能描述:IC VREF SERIES PREC 3V SOT-23-3 RoHS:是 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:FGA™ 標(biāo)準(zhǔn)包裝:1 系列:- 基準(zhǔn)類型:串聯(lián)，精度 輸出電壓:4.5V 容差:±800µV 溫度系數(shù):1ppm/°C 輸入電壓:13.5 V ~ 22 V 通道數(shù):1 電流 - 陰極:- 電流 - 靜態(tài):7mA 電流 - 輸出:10mA 工作溫度:-55°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:20-LCC 供應(yīng)商設(shè)備封裝:20-CLCC 包裝:管件
ISL60002CAH333Z 制造商:Intersil Corporation 功能描述:IC SM REF 3.300V LOW POWER FGA
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