L-1 3300 User Manual

Model 3300
Transimpedance

Amplier (TIA)

User Manual

Rev3

L-1 Standards and Technology, Inc.
www.L-1.biz

© Copyright L-1 Standards and Technol-

ogy, Inc. 2015

No part of this manual may be repro­duced in any form or by any means
(including electronic storage and retrieval
or translation into a foreign language)
without prior agreement and written con­sent from L-1 Standards and Technology,
Inc. as governed by United States and
international copyright laws.

Manual Part Number

TIA-MANUAL-REV3

Edition

First Edition, November 2015

L-1 Standards and Technology, Inc.
209 High Street
New Windsor, MD 21776-0729
USA
[phone] Phone
[phone] FAX
[e-mail]
www.L-1.biz

Warranty

The material contained in this document
is provided “as is,” and is subject to being
changed without notice. Further, to the
maximum extent permitted by applicable
law, L-1 Standards and Technology, Inc.
disclaims all warranties, either express
or implied, with regard to this manual
and any information contained herein,
including but not limited to the implied

warranties of merchantability and tness

for a particular purpose. L-1 shall not be
liable for errors or for any direct, indirect,
incidental, consequential, or other dam­ages in connection with the furnishings,
use, or performance of this document or
of any information contained herein.

Model 3300 Transimpedance Amplier (TIA) User Manual

Rev3

Table of Contents

1 Overview 1

2 Parts List 3

3 General Specications 4

4 Identication 5

5 Set Up 10

6 Control Software — Single Channel 11

7 Control Software — Four Channel 15

- Model 3300 Transimpedance Amplier

- Model 3310 TIA Power Supply

- Model 3311 TIA Quad Power Supply

8 Command Guide 19

9 Dimensions 36

Model 3300 Transimpedance Amplier (TIA) User Manual

Rev3

1 Overview

The L-1 Standards Model 3300 Transimpedance Amplier (TIA) is a precision elec­tronic instrument designed to measure photocurrents to very low uncertainties, for

the most demanding optical metrology applications. The amplier senses the cur­rent owing into/out of its input, which is held at constant potential (virtual ground),

and supplies a proportional analog potential at its output. There is an internal ana­log-to-digital convertor that can be used in-lieu of an external voltmeter to measure

the output potential. The amplier has 11 effective gains that may be set either via

front panel controls or remotely through a USB or Ethernet computer interface.

A block diagram of the amplier is shown below:

There are 3 stages in the TIA: a current-to-voltage amplier with selectable gains

ranging from 103 [V/A] to 109 [V/A] by factors of 10, an electronically controlled trim-

ming attenuator with a 0% to 1% range, and a voltage amplier with gains of 1, 10
and 100 and a full scale output of +/- 10 volts. The input is held at a virtual ground,
within a millivolt of its shield. Using a low bias current op-amp, current owing onto

the input is forced through one of several feedback resistors. A network of relays
selects the feedback resistor. The internal analog-to-digital convertor samples the
output voltage with 24 bits of resolution. The convertor supports several user se­lectable integration times and trigger modes. The available integration times include
integer multiples of both 50 Hz and 60 Hz power line cycles. All critical components
in the circuit are very stable and highly accurate. In addition, a trimming network is
included, so all gains are adjusted and set very close to their nominal values during
factory calibration.

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Model 3300 Transimpedance Amplier (TIA) User Manual

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The computer interface is routed through a TIA power supply module. There are two
module types. Model 3310 TIA Power Supply powers one TIA and supports USB
communications with a Windows based computer, while Model 3311 TIA Quad Power
Supply powers up to four TIAs and supports both USB and Ethernet communications.
A 9-pin Mini DIN cable from a TIA power module routes both power and data to an

amplier. All data transfers are ASCII text based. To minimize the effects of ground

loops, there is galvanic isolation between the TIA analog ground and the ground
references of the USB, Ethernet, and line power cables.

The TIA can communicate with a Windows based computer via the USB port located
on its power supply. An FTDI FT232RL USB2.0 UART converter located inside the
power supply translates communications between the USB and the RS232 inter­face that connects the power supply to the TIA. Once installed on the host PC, the
required USB driver creates a virtual COM port which emulates standard RS232
communications.

The RS232 settings used by the TIA are as follows:

Port Settings

Baud Rate 115200

Data bits 8

Parity None

Stop bits 1

Flow Control None

Note that this initialization is automatically done with the supplied LabVIEW control

demo software. The communication protocol is further dened in the “Command

Guide” section of this manual.

Model 3300 Transimpedance Amplier (TIA) User Manual

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2

2 Parts List

• Model 3300v2 Transimpedance Amplier 1 each

• 9-pin Mini DIN Cable 1 each

• BNC Cables 2 each

• Power Cable 1 each

• USB to Mini USB Cable 1 each

TIA Power Supply Required Separately: 1 each of either

• Model 3310 TIA Power Supply

OR

• Model 3311 TIA Quad Power Supply

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Model 3300 Transimpedance Amplier (TIA) User Manual

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3 General Specications

Model 3300 Transimpedance Amplier

General Specications

Voltage Output Range +/- 10 Volts Minimum

Linearity:

Differential 10 ppm

Integral 2 ppm

Input Offset Voltage <100 microvolts

Internal ADC:

Resolution 24-bits

Uncertainty 50 ppm

Stability 4 ppm/C; Longterm 40 ppm

Specications as a Function of Gain & Multiplier Settings

Uncertainty

(k=2, 25 C)

Temperature

Coefcient

(ppm/C)

3dB Roll-off (Hz)*

Input

Resistance

(Ω)

Noise Average

(1-10 Hz) (A/Hz½)

Multiplier 1,10,100 1 1 10 100 - 1 10 100

Gain

3

10

10

10

10

10

10

10

4

5

6

7

8

9

0.005% <1 1.6E+05 > 5E+04 > 1E+04 0.10 5.6E-11 3.0E-11 2.7E-11

0.005% <1 5.9E+04 > 5E+04 > 1E+04 0.11 6.1E-12 3.1E-12 3.3E-12

0.005% <1 1.6E+04 1.6E+04 > 1E+04 0.15 7.2E-13 4.8E-13 4.9E-13

0.005% 5 5.7E+03 5.7E+03 5.7E+03 0.60 1.4E-13 1.4E-13 1.2E-13

0.005% 5 1.4E+03 1.4E+03 1.4E+03 5.1 4.0E-14 3.9E-14 4.0E-14

0.005% 5 6.4E+02 6.4E+02 6.4E+02 50 1.2E-14 1.3E-14 1.3E-14

0.010% 25 1.6E+02 1.6E+02 1.6E+02 500 4.1E-15 4.2E-15 4.1E-15

*Note: The trimmer network rolls-off at approximately 25 kHz. Above this frequency the gain may change by as much as 1%.

Sync Input Electrical Specications

Sync Input

Edge Triggered Rising or Falling

Input Voltage 0 V to 5.5 V

Logic Low: max 1.5 volts

Logic High: min 2 volts

Model 3300 Transimpedance Amplier (TIA) User Manual

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4

4 Identication

Model 3300 Transimpedance Amplier—Front

Gain (V/A)

Selects the feedback resistance used in the amplier.

Multiplier

Selects the gain of the built-in voltage amplier that further amplies the voltage

output of the TIA.

Remote

When LED is lit, indicates the amplier is connected to a computer for remote
control of amplier functions.

Local

Press to take amplier out of remote mode. While in remote mode, any chang­es made to the gain or multiplier on the front panel will not register. If button is

pressed and held for ve seconds, front LED indicators are turned off or on. If the
amplier is being controlled remotely, do not turn off and on the front LED indica-

tors using this button.

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Model 3300 Transimpedance Amplier (TIA) User Manual

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Model 3300 Transimpedance Amplier—Back

Current In

Provides connection to detector or current source to be measured through sup­plied BNC cable.

Voltage Out

Provides connection to a digital voltmeter or digital multimeter through supplied
BNC cable.

Pwr/Com

Provides connection to a TIA power supply through supplied 9-pin DIN cable.

Model 3300 Transimpedance Amplier (TIA) User Manual

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6

Model 3310 TIA Power Supply—Front

USB

Provides connection to a computer for remote operation.

Sync

Used to synchronize measurements of the internal analog to digital converter
with external triggers.

Amplier Pwr/Com

Provides connection to a Model 3300 Transimpedance Amplier through supplied

9-pin DIN cable.

Model 3310 TIA Power Supply—Back

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Model 3300 Transimpedance Amplier (TIA) User Manual

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Model 3311 TIA Quad Power Supply—Front

TIA 1

Provides connection to a Model 3300 Transimpedance Amplier through supplied

9-Pin Din cable at TIA address 1. See “TIA Addressing” located in the Command
Guide section for more details about TIA addresses.

TIA 2

Provides connection to a Model 3300 Transimpedance Amplier through supplied

9-Pin Din cable at TIA address 2. See “TIA Addressing” located in the Command
Guide section for more details about TIA addresses.

TIA 3

Provides connection to a Model 3300 Transimpedance Amplier through supplied

9-Pin Din cable at TIA address 3. See “TIA Addressing” located in the Command
Guide section for more details about TIA addresses.

TIA 4

Provides connection to a Model 3300 Transimpedance Amplier through supplied

9-Pin Din cable at TIA address 4. See “TIA Addressing” located in the Command
Guide section for more details about TIA addresses.

Sync

Used to synchronize measurements of the internal analog to digital converter
with external triggers for all connected TIAs.

Model 3300 Transimpedance Amplier (TIA) User Manual

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8

Model 3311 TIA Quad Power Supply—Back

Reset

Resets the internal microcontroller of the Model 3311 Power Supply.
Do not operate the Reset button while communicating with the instrument.

Ethernet

Provides connection to a computer for remote operation using TCP-IP communi­cations.

USB

Provides connection to a computer for remote operation using RS232 communi­cations.

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Model 3300 Transimpedance Amplier (TIA) User Manual

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