数据搜索系统,热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

ADR280 数据表(PDF) 6 Page - Analog Devices

部件名 ADR280
功能描述  1.2 V Ultralow Power High PSRR Voltage Reference
Download  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADR280 数据表(HTML) 6 Page - Analog Devices

  ADR280 Datasheet HTML 1Page - Analog Devices ADR280 Datasheet HTML 2Page - Analog Devices ADR280 Datasheet HTML 3Page - Analog Devices ADR280 Datasheet HTML 4Page - Analog Devices ADR280 Datasheet HTML 5Page - Analog Devices ADR280 Datasheet HTML 6Page - Analog Devices ADR280 Datasheet HTML 7Page - Analog Devices ADR280 Datasheet HTML 8Page - Analog Devices  
Zoom Inzoom in Zoom Outzoom out
 6 / 8 page
background image
ADR280
–6–
ADR280
–7–
Negative Reference
A negative reference can be precisely configured without using
any expensive tight tolerance resistors, as shown in Figure 10.
The voltage difference between VOUT and V– is 1.2 V. Since VOUT
is at virtual ground, U2 will close the loop by forcing the V– pin
to be the negative reference output.
V+
VOUT
0.1F
V–
ADR280
U1
+5V
V+
V–
–2.7V
AD8541
–1.2V
–VREF
U2
C1
Figure 10. Negative Reference
Boosted Reference with Scalable Output
A precision user defined output with boosted current capabil-
ity can be implemented with the circuit shown in Figure 11. In
this circuit, U2 forces VO to be equal to VREF (1 + R2/R1) by
regulating the turn-on of M1; the load current is therefore fur-
nished by the 5 V supply. For higher output voltage, U2 must
be changed and the supply voltage of M1 and U2 must also be
elevated and separated from the U1 input voltage. In this config-
uration, a 100 mA load is achievable at a 5 V supply.The higher
the supply voltage, the lower the current handling is because of
the heat generated on the MOSFET. For heavy capacitive loads,
additional buffering is needed at the output to enhance the
transient response.
V+
VOUT
V–
ADR280
U1
5V
V+
V–
U2
R1
R2
RL
25
VO
10.8k 0.1%
10k 0.1%
C2
1pF
1.2V
AD8541
0.1F
C1
M1
2.5V/100mA
M1 = FDB301N, 2N7000, 2N7002, OR EQUIVALENT
Figure 11. 2.5 V Boosted Reference
GSM and 3G Mobile Station Applications
The ADR280 voltage reference is ideal for use with analog base-
band ICs in GSM and 3G mobile station applications. Figure 12
illustrates the use of the ADR280 with the AD6535 GSM analog
baseband.The AD6535 provides all of the data converters and
power management functions needed to implement a GSM
mobile station, including baseband and audio codecs, voltage
regulators, and a battery charger. Besides low current consump-
tion and a small footprint, the ADR280 is optimized for excellent
power supply rejection ratio (PSRR) necessary for optimum
AD6535 device performance when the main battery voltage
fluctuates during RF power amplifier activity.
DIGITAL
BASEBAND
AD6535 ANALOG
BASEBAND
BASEBAND CODEC
AUDIO CODEC
POWER
MANAGEMENT
RADIO
ADR280
VOLTAGE REFERENCE
Figure 12. GSM Mobile Station Application
REV. A
REV. A


类似零件编号 - ADR280

制造商部件名数据表功能描述
logo
Analog Devices
ADR280AKS-R2 AD-ADR280AKS-R2 Datasheet
849Kb / 12P
   1.2 V Ultralow Power High PSRR Voltage Reference
REV. C
ADR280AKS-REEL AD-ADR280AKS-REEL Datasheet
849Kb / 12P
   1.2 V Ultralow Power High PSRR Voltage Reference
REV. C
ADR280AKS-REEL7 AD-ADR280AKS-REEL7 Datasheet
849Kb / 12P
   1.2 V Ultralow Power High PSRR Voltage Reference
REV. C
ADR280AKSZ-R21 AD-ADR280AKSZ-R21 Datasheet
849Kb / 12P
   1.2 V Ultralow Power High PSRR Voltage Reference
REV. C
ADR280AKSZ-REEL71 AD-ADR280AKSZ-REEL71 Datasheet
849Kb / 12P
   1.2 V Ultralow Power High PSRR Voltage Reference
REV. C
More results

类似说明 - ADR280

制造商部件名数据表功能描述
logo
Analog Devices
ADR280 AD-ADR280_15 Datasheet
849Kb / 12P
   1.2 V Ultralow Power High PSRR Voltage Reference
REV. C
ADR280 AD-ADR280_07 Datasheet
849Kb / 12P
   1.2 V Ultralow Power High PSRR Voltage Reference
REV. C
ADCMP380 AD-ADCMP380 Datasheet
271Kb / 10P
   Ultralow Power Voltage Comparator with Reference
AD1580ART-REEL7 AD-AD1580ART-REEL7 Datasheet
368Kb / 12P
   1.2 V Micropower, Precision Shunt Voltage Reference
Rev. F
AD1580ART AD-AD1580ART Datasheet
368Kb / 12P
   1.2 V Micropower, Precision Shunt Voltage Reference
Rev. F
AD1580BRT-R2 AD-AD1580BRT-R2 Datasheet
368Kb / 12P
   1.2 V Micropower, Precision Shunt Voltage Reference
REV. F
AD1580BRT AD-AD1580BRT Datasheet
368Kb / 12P
   1.2 V Micropower, Precision Shunt Voltage Reference
Rev. F
ADR512ARTZ-REEL7 AD-ADR512ARTZ-REEL7 Datasheet
282Kb / 12P
   1.2 V Precision Low Noise Shunt Voltage Reference
REV. A
ADR512 AD-ADR512_15 Datasheet
282Kb / 12P
   1.2 V Precision Low Noise Shunt Voltage Reference
REV. A
ADR512 AD-ADR512 Datasheet
208Kb / 8P
   1.2 V Precision Low Noise Shunt Voltage Reference
REV. 0
More results


Html Pages

1 2 3 4 5 6 7 8


数据表 下载

Go To PDF Page


链接网址




隐私政策
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com