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參數(shù)資料
型號(hào)： ADN8810ACPZ-REEL7
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 1/16頁(yè)
文件大小： 262K
描述： IC CURRENT SOURCE(12BIT) 24LFCSP
標(biāo)準(zhǔn)包裝： 1,500
功能： 電流源（12 位）
電流 - 輸出： 300mA
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 24-VFQFN 裸露焊盤，CSP
供應(yīng)商設(shè)備封裝： 24-LFCSP-VQ（4x4）
包裝： 帶卷 (TR)
 
 
12-Bit High Output Current Source
 
ADN8810
 
 
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
 
 
 
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com  
Fax: 781.461.3113    ?0042009 Analog Devices, Inc. All rights reserved.
FEATURES
High precision 12-bit current source
Low noise
Long term stability
Current output from 0 mA to 300 mA
Output fault indication
Low drift
Programmable maximum current
24-lead 4 mm ?4 mm leadframe chip scale package
3-wire serial interface  
 
APPLICATIONS
Tunable laser current source
Programmable high output current source
Automatic test equipment
 
GENERAL DESCRIPTION
The ADN8810 is a 12-bit current source with an adjustable
full-scale output current of up to 300 mA. The full-scale out-
put current is set with two external sense resistors. The output
compliance voltage is 2.5 V, even at output currents up to
300 mA.
The device is particularly suited for tunable laser control and
can drive tunable laser front mirror, back mirror, phase, gain,
and amplification sections. A host CPU or microcontroller
controls the operation of the ADN8810 over a 3-wire SPI?
interface. The 3-bit address allows up to eight devices to be
independently controlled while attached to the same SPI bus.
The ADN8810 is guaranteed with ?4 LSB INL and ?0.75 LSB
DNL. Noise and digital feedthrough are kept low to ensure low
jitter operation for laser diode applications. Full-scale and
scaled output currents are given in Equations 1 and 2,
respectively.
SN
REF
FS
R
V
I
?/DIV>
H
10
     
 
 
 
(1)
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
+
?/DIV>
?/DIV>
?/DIV>
=
1
.
0
15
1
4096
k
R
R
V
 Code
 
I
SN
SN
REF
OUT
 
 
(2)
FUNCTIONAL BLOCK DIAGRAM
RESET
RESET
ENCOMP
FB
DVDD    AVDD
PVDD
5V
5V
3.3V
4.096V
VREF
CS
SERIAL
TERFACE
SCLK
SDI
ADDRESS
ADDR0-2
IOUT
R
SN
R
SN
1.6V
R
SN
1.6V
D1
ADN8810
FAULT
SB
AVSS
DVSS
DGND
SB
FAULT
INDICATION
3
 
Figure 1.
 
 
 
 
 
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