R3 and IBIAS both have a tolerance of ±" />
參數(shù)資料
型號(hào)： EVAL-AD5420EBZ
廠商： Analog Devices Inc
文件頁數(shù)： 19/32頁
文件大小： 0K
描述： BOARD EVALUATION FOR AD5420
標(biāo)準(zhǔn)包裝： 1
DAC 的數(shù)量： 1
位數(shù)： 16
數(shù)據(jù)接口： 串行
設(shè)置時(shí)間： 10µs
DAC 型： 電流
工作溫度： -40°C ~ 85°C
已供物品： 板
已用 IC / 零件： AD5420
AD5410/AD5420
Data Sheet
Rev. F | Page 26 of 32
R3 and IBIAS both have a tolerance of ±10% and a temperature
coefficient of 30 ppm/°C. Connecting to R3SENSE rather than
AVDD avoids incorporating into R3 internal metal connections
that have large temperature coefficients and result in large
errors. See Figure 49 for a plot of R3 vs. ambient temperature
and Figure 50 for a plot of R3 vs. output current.
40.98
40.96
40.94
40.92
40.90
40.88
40.86
40.84
40.82
40.80
40.78
–40
–20
0
20
40
60
80
100
AMBIENT TEMPERATURE (°C)
R3
RE
SI
ST
ANCE
(
)
07027-
051
IOUT = 12mA
R3 = VR3/(12mA + 444A)
Figure 49. R3 Resistor Value vs. Temperature
42.0
41.8
41.6
41.4
41.2
41.0
40.8
40.6
40.4
40.2
40.0
0
5
10
15
20
25
IOUT (mA)
R3
(
)
07027-
052
TA = 25°C
R3 = VR3/(IOUT + 444A)
Figure 50. R3 Resistor Value vs. IOUT
To eliminate errors due to the tolerances of R3 and IBIAS, a two-
measurement calibration can be performed as the following
example illustrates:
1. Program code 0x1000 and measure IOUT and VR3. In this
example, the measured values are
IOUT = 1.47965 mA
VR3 = 79.55446 mV
2. Program Code 0xF000 and measure IOUT and VR3 again.
The measured values this time are
IOUT = 22.46754 mA
VR3 = 946.39628 mV
Using this information and Equation 2, two simultaneous
equations can be generated from which the values of R3 and
IBIAS can be calculated as follows:
OUT
R
BIAS
R
OUT
I
R
V
I
R
V
I
=
=
3
Simultaneous Equation 1
00147965
.
0
3
07955446
.
0
=
R
I
BIAS
Simultaneous Equation 2
02246754
.
0
3
94639628
.
0
=
R
I
BIAS
From these two equations,
302
.
41
3
=
R
Ω and
5
.
446
=
BIAS
I
μA
And Equation 2 becomes
A
V
I
R
OUT
5
.
446
302
.
41
3
=
相關(guān)PDF資料
PDF描述
UVZ1E682MHD CAP ALUM 6800UF 25V 20% RADIAL
DC245A-A BOARD EVAL LTC1668
EVAL-AD5570SDZ BOARD EVAL FOR AD5570
FPF2006 IC SWITCH LOAD FULL FUNC SC70-5
UCS2G680MNY9 CAP ALUM 68UF 400V 20% RADIAL
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EVAL-AD5421SDZ 功能描述:BOARD EVAL FOR AD5421 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 數(shù)模轉(zhuǎn)換器 (DAC) 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- DAC 的數(shù)量:4 位數(shù):12 采樣率（每秒）:- 數(shù)據(jù)接口:串行，SPI? 設(shè)置時(shí)間:3µs DAC 型:電流/電壓 工作溫度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581
EVAL-AD5422EBZ 功能描述:BOARD EVAL FOR AD5422 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 數(shù)模轉(zhuǎn)換器 (DAC) 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- DAC 的數(shù)量:4 位數(shù):12 采樣率（每秒）:- 數(shù)據(jù)接口:串行，SPI? 設(shè)置時(shí)間:3µs DAC 型:電流/電壓 工作溫度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581
EVAL-AD5422LFEBZ 功能描述:BOARD EVAL FOR AD5422LFEBZ RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 數(shù)模轉(zhuǎn)換器 (DAC) 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- DAC 的數(shù)量:4 位數(shù):12 采樣率（每秒）:- 數(shù)據(jù)接口:串行，SPI? 設(shè)置時(shí)間:3µs DAC 型:電流/電壓 工作溫度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581
EVAL-AD5424EB 制造商:Analog Devices 功能描述:EVALUATION BOARD I.C. - Bulk 制造商:Rochester Electronics LLC 功能描述:
EVAL-AD5424EBZ 功能描述:BOARD EVALUATION FOR AD5424 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 數(shù)模轉(zhuǎn)換器 (DAC) 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- DAC 的數(shù)量:4 位數(shù):12 采樣率（每秒）:- 數(shù)據(jù)接口:串行，SPI? 設(shè)置時(shí)間:3µs DAC 型:電流/電壓 工作溫度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*