Download
Share
Print this page
  1. Manuals
  2. Brands
  3. Linear Manuals
  4. Computer Hardware
  5. ANALOG DEVICES EVAL-LTC6563-TQFN
  6. Demo manual

Linear ANALOG DEVICES EVAL-LTC6563-TQFN Demo Manual

Ltc6563 four-channel differential-output transimpedance amplifier with output multiplexing
Hide thumbs

Advertisement

Quick Links

Download this manual
Four-Channel Differential-Output Transimpedance
DESCRIPTION
Demonstration circuit EVAL-LTC6563-TQFN features
the
LTC
6563
four-channel transimpedance amplifier
®
(TIA) with output multiplexing. This demo kit, EVAL-
LTC6563TQFN-EZKIT shipped along with the SDP-K1
controller board, has 4 installed single APD's which allows
optical testing of the TIA functionality. Electrical testing
using an external lab pulse generator, as the input current
pulse, is also possible with small board modifications.
With its 20kΩ transimpedance gain and 90µA linear input
current range, the LTC6563 is ideal for LIDAR receivers
using Avalanche Photodiodes (APD). The LTC6563 oper-
ates from 3.3V single supply and consumes only 194mW
(depending on output mode) for 4 channels. Utilizing the
LTC6563's output MUX, multiple LTC6563 devices can
be combined to a single output. The LTC6563's fast over-
load recovery makes it well-suited for LIDAR receivers.
The LTC6563's differential output can swing 2V
a 100Ω load, ideal for driving a high-speed ADC directly.
Amplifier with Output Multiplexing
P-P
Figure 1. Connection Diagram (IN1 to IN4 Optional for Electrical Testing Only)
EVAL-LTC6563-TQFN
The LTC6563 is packaged in a compact 3mm × 5mm
24-pin leadless QFN package with an exposed pad for
thermal management and low inductance.
The EVAL-LTC6563-TQFN utilizes four installed 400-
1100nm APD sensors feeding the LTC6563 for current-
to-voltage conversion and amplification. The APDs are
DC-coupled to the TIAs to facilitate fast output multi-
plexing and channel switching. Alternatively, with small
board modifications, it is possible to electrically excite the
LTC6563 using a lab generator tied to SMA connectors
provided on the board and voltage-to-current resistors on
the board. The EVAL-LTC6563-TQFN is intended to dem-
onstrate time-domain measurements into 50Ω systems.
NOTE: This document applies to EVAL/Demo boards
which have Rev. A3 label attached to the bottom side.
Design files for this circuit board are
into
All registered trademarks and trademarks are the property of their respective owners.
DEMO MANUAL
LTC6563
available.
Rev. 0
1

Advertisement

loading

Related Manuals for Linear ANALOG DEVICES EVAL-LTC6563-TQFN

Summary of Contents for Linear ANALOG DEVICES EVAL-LTC6563-TQFN

  • Page 1 Alternatively, with small With its 20kΩ transimpedance gain and 90µA linear input board modifications, it is possible to electrically excite the current range, the LTC6563 is ideal for LIDAR receivers LTC6563 using a lab generator tied to SMA connectors using Avalanche Photodiodes (APD).
  • Page 2 DEMO MANUAL EVAL-LTC6563-TQFN DESCRIPTION Figure 2. LTC6563 EVAL Board Top Side Figure 3. LTC6563 EVAL Board Back Side Rev. 0...

  • Page 3: Quick Start Procedure

    DEMO MANUAL EVAL-LTC6563-TQFN QUICK START PROCEDURE Use with SDP-K1 Controller Board 3. Control the I/O States (CHSEL0, CHSEL1, OMUX, PWRMD (also called SHDN on the board silkscreen The DEMO kit is supplied with the SDP-K1 controller and schematic), ADJ1, ADJ0). board plugged-in directly below the EVAL board.
  • Page 4 DEMO MANUAL EVAL-LTC6563-TQFN QUICK START PROCEDURE b. Move the miniature shorting jumpers (10 places) near P8, and P9 towards P8, and P9 (towards the top side of the board) if not already. 5. Plug the USB cable into the PC and to the SDP-K1. 6.
  • Page 5 DEMO MANUAL EVAL-LTC6563-TQFN QUICK START PROCEDURE Now the board(s) are connected and the commands in the expected at OUT and OUTBAR SMAs (Ch1: OUT, Ch2: Coolterm Command Summary can be executed. OUTBAR): 7. Apply the external –120V DC power supply to P7 (pin 2) with pin 1 tied to power supply ground.
  • Page 6 DEMO MANUAL EVAL-LTC6563-TQFN LTC6563 ADJUSTMENTS AND CONTROLS • TERM and TERMBAR shorted to OUT and OUTBAR Once in Set IO command mode in Coolterm, enter a num- respectively (through R47, R48 0Ω resistors on the ber between 1-6 (followed by Enter) corresponding to the board) pin state to be changed.
  • Page 7 DEMO MANUAL EVAL-LTC6563-TQFN OPERATING THE BOARD IN STAND-ALONE MODE (WITHOUT SDP-K1) 1. Power: Move the miniature 3-pin shorting jumpers next to each turret to the bottom (away from P8, silkscreen a. Stand-alone Operation: Move switch S1 slider to the A) for state 1, or to the top (towards P8, silkscreen B) left (towards VIN test point), connect a low-noise for state 0.

  • Page 8: General Description

    DEMO MANUAL EVAL-LTC6563-TQFN GENERAL DESCRIPTION Power supply Board ID EEPROM 3.3V power is generated on-board using LT3045 (U3) low Mounted on the board bottom (U5). Used to identify noise LDO at either VCCI or VCCO test point. Input power the board when SDP-K1 (if present) is plugged onto the is either applied externally at VIN test point and ground, board.
  • Page 9 DEMO MANUAL EVAL-LTC6563-TQFN INPUT CIRCUIT DESCRIPTION Input to the LTC6563 can be provided either optically (e.g. 2kΩ) for voltage-to-current conversion. With electri- (APD, D1 to D4 with appropriate negative bias applied cal testing, the APD’s can be disconnected by removing to P7 pin 2 and pin 1 ground) the way the EVAL board R39-R42 (4 places).
  • Page 10 DEMO MANUAL EVAL-LTC6563-TQFN OUTPUT CIRCUIT DESCRIPTION Figure 12. Output Configuration Schematic Selecting Channels Table 2. Channel Selection The LTC6563’s multiplexing capability allows compact CHSEL1 CHSEL0 ACTIVE CHANNEL multichannel designs without external multiplexers, using the CHSEL1 (MSB) and CHSEL0 (LSB) device pins to select 1:4 channels. To select the active channel, the jumpers shown in Figure 13 can be used.

  • Page 11: Equipment List

    DEMO MANUAL EVAL-LTC6563-TQFN OUTPUT CIRCUIT DESCRIPTION Figure 13. Channel Select Options EQUIPMENT LIST A. Demo Board Kit Contents: 1. LTC6563 EVAL Board. 2. SDP-K1 Microcontroller (plugged onto the bottom of the LTC6563 EVAL board): Find information here. 3. USB Cable B. Dual-channel oscilloscope (e.g. Keysight MSO-X 6004A, or equivalent). C.

  • Page 12: Schematic Diagram

    DEMO MANUAL EVAL-LTC6563-TQFN SCHEMATIC DIAGRAM Rev. 0...
  • Page 13 DEMO MANUAL EVAL-LTC6563-TQFN SCHEMATIC DIAGRAM 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.
  • Page 14 DEMO MANUAL EVAL-LTC6563-TQFN ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. Legal Terms and Conditions By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern.