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參數(shù)資料
| 型號(hào)： | ADN8810-EVAL |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 12-Bit High Output Current Source |
| 中文描述： | 12位高輸出電流源 |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大?。?/td> | 232K |
| 代理商： | ADN8810-EVAL |
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12-Bit High Output Current Source
ADN8810
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
Rev.
0
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
Fax: 781.326.8703
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
R
×
FS
V
I
≈
10
(1)
+
×
×
×
=
1
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
INTERFACE
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
0
Figure 1.
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