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參數(shù)資料
| 型號(hào)： | X60008E-50 |
| 英文描述： | Precision 5.0V FGA Voltage Reference(5.0V FGA 精密電壓基準(zhǔn)) |
| 中文描述： | FGA中精密5.0V電壓基準(zhǔn)（5.0V FGA中精密電壓基準(zhǔn)） |
| 文件頁(yè)數(shù)： | 9/14頁(yè) |
| 文件大?。?/td> | 121K |
| 代理商： | X60008E-50 |
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REV 1.2 12/3/03
www.xicor.com
X60008E-50
APPLICATIONS INFORMATION
FGA Technology
The X60008 series of voltage references use the float-
ing 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 ref-
erence voltage itself is not limited by voltage bandgaps
or zener settings, so a wide range of reference volt-
ages can be programmed (standard voltage settings
are provided, but customer-specific voltages are avail-
able).
The process used for these reference devices is a
floating gate CMOS process, and the amplifier circuitry
uses CMOS transistors for amplifier and output transis-
tor circuitry. While providing excellent accuracy, there
are limitations in output noise level and load regulation
due to the MOS device characteristics. These limita-
tions are addressed with circuit techniques discussed
in other sections.
Nanopower Operation
Reference devices achieve their highest accuracy
when powered up continuously, and after initial stabili-
zation has taken place. For example, power up drift on
a high accuracy reference can reach 20ppm or more in
the first 30 seconds, and generally will settle to a stable
value in 100 hours or so. This drift can be eliminated by
leaving the power on continuously.
The X60008 is the first high precision voltage refer-
ence with ultra low power consumption that makes it
possible to leave power on continuously in battery
operated circuits. The X60008 consumes extremely
low supply current due to the proprietary FGA technol-
ogy. Supply current at room temperature is typically
500nA which is 1 to 2 orders of magnitude lower than
competitive devices. Application circuits using battery
power will benefit greatly from having an accurate, sta-
ble 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 dis-
abled when not in use can remain powered up
between conversions as shown in figure 1. Data acqui-
sition 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 cur-
rents 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 set-
tle to its final value, or, may not actually settle to a final
value as power on time may be short.
Figure 1.
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.
Noise Performance and Reduction:
The output noise voltage in a 0.1Hz to 10Hz bandwidth
is typically 30μVp-p. This is shown in the plot in the
Typical Performance Curves. The noise measurement
is made with a bandpass filter made of a 1 pole high-
pass filter with a corner frequency at .1Hz and a 2-pole
low-pass filter with a corner frequency at 12.6Hz to
create a filter with a 9.9Hz bandwidth. Noise in the
10KHz to 1MHz bandwidth is approximately 400μVp-p
with no capacitance on the output, as shown in Fig. 2
below. These noise measurements are made with a 2
V
IN
= +6-9V
0.001μF–0.01μF
Serial
Bus
V
IN
V
OUT
X60008-50
GND
REF IN
Enable
SCK
SDAT
12 to 24-bit
A/D Converter
0.01μF
10μF
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X60008EIS8-41 | 功能描述:IC VREF SERIES PREC 4.096V 8-SO RoHS:否 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 |
| X60008EIS8-41T1 | 功能描述:IC VREF SERIES PREC 4.096V 8-SO RoHS:否 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 |
| X60008EIS8-50 | 功能描述:IC VREF SERIES PREC 5V 8-SO RoHS:否 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:FGA™ 標(biāo)準(zhǔn)包裝:3,000 系列:- 基準(zhǔn)類型:旁路，精度 輸出電壓:5V 容差:±0.5% 溫度系數(shù):100ppm/°C 輸入電壓:- 通道數(shù):1 電流 - 陰極:80µA 電流 - 靜態(tài):- 電流 - 輸出:15mA 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:帶卷 (TR) 其它名稱:LM4040CIM3-5.0MLTRLM4040CIM3-5.0MLTR-ND |
| X60008EIS8-50T1 | 功能描述:IC VREF SERIES PREC 5V 8-SO RoHS:否 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:FGA™ 標(biāo)準(zhǔn)包裝:3,000 系列:- 基準(zhǔn)類型:旁路，精度 輸出電壓:5V 容差:±0.5% 溫度系數(shù):100ppm/°C 輸入電壓:- 通道數(shù):1 電流 - 陰極:80µA 電流 - 靜態(tài):- 電流 - 輸出:15mA 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:帶卷 (TR) 其它名稱:LM4040CIM3-5.0MLTRLM4040CIM3-5.0MLTR-ND |
| X60008EIS8Z-41 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Precision 4.096V FGA⑩ Voltage |
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