2024年5月16日发(作者：祝光霁)
元器件交易网
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.
I
FS
≈
V
REF
10×R
(1)
SN
I
V
OUT
= Code×
REF
1
⎛
R
SN
⎞
⎟
4096
×
R
×
⎜
⎜
15k
+0.1
(2)
SN
⎝
⎟
⎠
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.
12-Bit High Output Current Source
ADN8810
FUNCTIONAL BLOCK DIAGRAM
5V5V3.3V
ENCOMPDVDDAVDDPVDD
RESETRESET
FB
4.096V
VREF
R
SN
CS
ADN8810
IOUT
1.6V
SERIAL
INTERFACE
SCLK
R
SN
SDI
1.6V
D1
ADDRESSADDR0-2
R
SN
3
FAULT
SB
AVSS
DVSS
DGND
1
0
0
-
0
-
5
FAULT
SB
9
1
3
INDICATION
0
Figure 1.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703© 2004 Analog Devices, Inc. All rights reserved.
元器件交易网
ADN8810
TABLE OF CONTENTS
ADN8810–3
5
Absolute 6
6
Pin Configuration and 7
8
Typical 9
11
Setting Full-Scale 11
Reference .11
11
Serial 11
Standby and 12
12
Using Multiple ADN8810s for Additional Output Current.12
Adding Dither to the .12
Driving Common-Anode 13
PC Board 13
Suggested Pad Layout for 14
15
15
REVISION HISTORY
Revision 0: Initial Version
Rev. 0 | Page 2 of 16
2024年5月16日发(作者：祝光霁)
元器件交易网
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.
I
FS
≈
V
REF
10×R
(1)
SN
I
V
OUT
= Code×
REF
1
⎛
R
SN
⎞
⎟
4096
×
R
×
⎜
⎜
15k
+0.1
(2)
SN
⎝
⎟
⎠
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.
12-Bit High Output Current Source
ADN8810
FUNCTIONAL BLOCK DIAGRAM
5V5V3.3V
ENCOMPDVDDAVDDPVDD
RESETRESET
FB
4.096V
VREF
R
SN
CS
ADN8810
IOUT
1.6V
SERIAL
INTERFACE
SCLK
R
SN
SDI
1.6V
D1
ADDRESSADDR0-2
R
SN
3
FAULT
SB
AVSS
DVSS
DGND
1
0
0
-
0
-
5
FAULT
SB
9
1
3
INDICATION
0
Figure 1.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703© 2004 Analog Devices, Inc. All rights reserved.
元器件交易网
ADN8810
TABLE OF CONTENTS
ADN8810–3
5
Absolute 6
6
Pin Configuration and 7
8
Typical 9
11
Setting Full-Scale 11
Reference .11
11
Serial 11
Standby and 12
12
Using Multiple ADN8810s for Additional Output Current.12
Adding Dither to the .12
Driving Common-Anode 13
PC Board 13
Suggested Pad Layout for 14
15
15
REVISION HISTORY
Revision 0: Initial Version
Rev. 0 | Page 2 of 16