ADL5317ACPZ-WP AD [Analog Devices], ADL5317ACPZ-WP Datasheet

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ADL5317ACPZ-WP

Manufacturer Part Number
ADL5317ACPZ-WP
Description
Avalanche Photodiode Bias Controller and Wide Range (5 nA to 5 mA) Current Monitor
Manufacturer
AD [Analog Devices]
Datasheet
FEATURES
Accurately sets avalanche photodiode (APD) bias voltage
3 V-compatible control interface
Monitors photodiode current (5:1 ratio) over six decades
Linearity 0.25% from 10 nA to 1 mA, 0.5% from 5 nA to 5 mA
Overcurrent protection and overtemperature shutdown
Miniature 16-lead chip scale package (LFCSP 3 mm × 3 mm)
APPLICATIONS
Optical power monitoring and biasing in APD systems
Wide dynamic range voltage sourcing and current
GENERAL DESCRIPTION
The ADL5317 is a high voltage, wide dynamic range, biasing
and current monitoring device optimized for use with
avalanche photodiodes. When used with a stable high voltage
supply (up to 80 V), the bias voltage at the VAPD pin can be
varied from 6 V to 75 V using the 3 V-compatible VSET pin.
The current sourced from the VAPD pin over a range of 5 nA to
5 mA is accurately mirrored with an attenuation of 5 and
sourced from the IPDM monitor output. In a typical
application, the monitor output drives a current input
logarithmic amplifier to produce an output representing the
optical power incident upon the photodiode. The photodiode
anode can be connected to a high speed transimpedance
amplifier for the extraction of the data stream.
A signal of 0.2 V to 2.5 V with respect to ground applied at the
VSET pin is amplified by a fixed gain of 30 to produce the 6 V
to 75 V bias at Pin VAPD. The accuracy of the bias control
interface of the ADL5317 allows for straightforward calibration,
thereby maintaining a constant avalanche multiplication factor
of the photodiode over temperature. The current monitor
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.
Wide bias range from 6 V to 75 V
monitoring in high voltage systems
Wide Range (5 nA to 5 mA) Current Monitor
Avalanche Photodiode Bias Controller and
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
output, IPDM, maintains its high linearity vs. photodiode
current over the full range of APD bias voltage. The current
ratio of 5:1 remains constant as V
The ADL5317 also offers a supply tracking mode compatible
with adjustable high voltage supplies. The VAPD pin accurately
follows 2.0 V below the VPHV supply pin when VSET is tied to
a voltage from 3.0 V to 5.5 V (or higher with a current limiting
resistor), and the VCLH pin is open.
Protection from excessive input current at VAPD as well as
excessive die temperature is provided. The voltage at VAPD falls
rapidly from its setpoint when the input current exceeds 18 mA
nominally. A die temperature in excess of 140°C will cause the
bias controller and monitor to shut down until the temperature
falls below 120°C. Either overstress condition will trigger a logic
low at the FALT pin, an open collector output loaded by an
external pull-up to an appropriate logic supply (1 mA max).
The ADL5317 is available in a 16-lead LFCSP package and is
specified for operation from −40°C to +85°C.
1
2
3
4
FALT
VSET
VPLV
VPHV
VPHV
COMM
5
16
FUNCTIONAL BLOCK DIAGRAM
OVERCURRENT
PROTECTION
PROTECTION
VCLH
THERMAL
COMM
6
15
© 2005 Analog Devices, Inc. All rights reserved.
30 × V
29 × R
R
COMM
SET
Figure 1.
14
GARD
7
SET
COMM
and V
13
13
VAPD
PHV
CURRENT
MIRROR
8
ADL5317
I
ADL5317
5:1
APD
are varied.
www.analog.com
GARD
IPDM
I
APD
5
NC
NC
12
11
10
9

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ADL5317ACPZ-WP Summary of contents

Page 1

FEATURES Accurately sets avalanche photodiode (APD) bias voltage Wide bias range from V-compatible control interface Monitors photodiode current (5:1 ratio) over six decades Linearity 0.25% from mA, 0.5% from 5 ...

Page 2

ADL5317 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 ESD Caution.................................................................................. 4 Pin Configuration and Function Descriptions............................. 5 Typical Performance Characteristics ............................................. 6 Theory of ...

Page 3

SPECIFICATIONS PHV PLV APD APD Table 1. Parameter CURRENT MONITOR OUTPUT Current Gain from VAPD to IPDM Nonlinearity Small-Signal Bandwidth Wideband Noise at IPDM Output Voltage Range ...

Page 4

ADL5317 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage Input Current at VAPD Internal Power Dissipation θ (Soldered Exposed Paddle) JA Maximum Junction Temperature Operating Temperature Range Storage Temperature Range Lead Temperature Range (Soldering 60 sec) ESD CAUTION ESD (electrostatic ...

Page 5

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic Description 1 FALT Open Collector (Active Low) Logic Output. Indicates an overcurrent or overtemperature condition. 2 VSET APD Bias Voltage Setting Input. Short to VPLV for supply ...

Page 6

ADL5317 TYPICAL PERFORMANCE CHARACTERISTICS PHV PLV APD APD 10m 1m +85°C 100μ –40°C +25°C 10μ 1μ 100n 10n +85°C 1n +25°C –40°C 100p 1n 10n 100n 1μ ...

Page 7

I (Amperes) APD Figure 9. I Linearity for Multiple Temperatures and Devices PDM V = Normalized to I PHV APD APD 100pA ...

Page 8

ADL5317 10m 1m 100μA TO 1mA: T-RISE = <0.5μs, T-FALL = <0.5μs 100μ 10μA TO 100μA: T-RISE = <0.5μs, T-FALL = <0.5μs 10μ 1μA TO 10μA: T-RISE = <0.5μs, T-FALL = <0.5μs 1μ 100nA TO 1μA: T-RISE = <1μs, T-FALL ...

Page 9

THEORY OF OPERATION The ADL5317 is designed to address the need for high voltage bias control and precision optical power monitoring in optical systems using avalanche photodiodes optimized for use with the Analog Devices, Inc. family of translinear ...

Page 10

ADL5317 For small input currents, this pull-down must discharge not only C but also C at the VAPD pin (through the GARD GRD COMP and VAPD diodes). The final 700 mV of settling for lower input currents is dominated by ...

Page 11

APPLICATIONS The ADL5317 is primarily designed for wide dynamic range applications simplifying APD bias circuit architecture. Accurate control of the bias voltage across the APD becomes critical to maintain the proper avalanche multiplication factor as the temperature and input power ...

Page 12

ADL5317 1 FALT 10kΩ VSET SET 3 V VPLV P_LOW 0Ω 4 0.1μF VPHV 0.01μF 0.01μF 0Ω 0.1μF V P_HIGH Figure 23. Interfacing the ADL5317 to the AD8305 for High Accuracy APD Power Monitoring Measured rms noise voltage ...

Page 13

ALKALINE 604Ω D CELL + + ALKALINE – D CELLS – + 1kΩ – DP 8200 + DC POWER SUPPLY – VPHV VPLV VSET ADL5317 VAPD IPDM + ALKALINE FET BUFFER D CELLS – – ...

Page 14

ADL5317 EVALUATION BOARD Table 4. Evaluation Board Configuration Options Component Function VPHV, VPLV, High and Low Voltage Supply and Ground Pins. GND VSET APD Bias Voltage Setting Pin. The dc voltage applied to VSET determines the APD bias voltage at ...

Page 15

FALT VSET R3 0Ω R2 10kΩ VPLV 0Ω 0.1μF 0.01μF C1 0.01μF GND C5 0.1μF VPHV Figure 30. ADL5317 Evaluation Board Schematic Figure 31. ADL5317 Evaluation Board Layout R8 0Ω FALT ...

Page 16

... SEATING PLANE ORDERING GUIDE Model Temperature Range 1 ADL5317ACPZ-REEL7 –40°C to +85°C 1 ADL5317ACPZ-WP –40°C to +85°C ADL5317-EVAL Pb-free part. © 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05456-0-7/05(0) 3.00 0.60 MAX BSC SQ 0 ...

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