Datasheet

LIA-BVD-150-L
Single-Board
Dual Phase Lock-In-Amplifier

Picture shows Lock-in Amplifier card with optional Mounting Kit LIA- MK- 2 (to be ordered separately)
Features

Dual Phase Detection with X, Y and Magnitude Output
Working Frequency 5 Hz ... 10 kHz
Digital Phase Shifter 0 ... 360°
Current and Voltage Input
Parameter Control by local Switches and opto-isolated digital Inputs
Optional Mounting Kit and Reference Oscillator Modules availableApplications
Spectroscopy
Luminescence, Fluorescence, Phosphorescence Measurements
Light Scattering Measurements
Opto-electronical Quality Control
Integration in Industrial and Scientific Measurement-Systems
Multi-Channel-Systems at moderate Costs

Block Diagram

Progr. Gain
AC-Amplifier

VOLTAGEINPUT AC

Lowpass-Filter

Highpass-Filter

MONITOROUTPUT

VOLTAGEINPUTVOLTAGEOUTPUT

fgo= 100Hz...
1MHz / 6dB

fgu = 0.2Hz...
1kHz / 6dB

Lowpass-Filter

Progr. Gain
DC-Amplifier

Transimpedance
Amplifier

CURRENT
INPUT

Gain=-100kV/A

PSD

X-OFFSETINPUT
X-OUTPUTR * cos( ϕ)t=3ms...10s
6/12 dB/Oct.
Reference
Comparator

DigitalPhase-Shifter

Vector Summing
Amplifier0°∆ϕ

REFERENCE
INPUT

YRX

∆ϕ =0 ... 360°

PSD

Lowpass-Filter

Optocoupler
Isolate Unit

Progr. Gain
DC-Amplifier
Y-OUTPUTR * sin(ϕ)

CONTROL
INPUTS
t=3ms...10s
6/12 dB/Oct.
ManualSwitches

R-OUTPUT
Magnitude

90°

Parameter
Control Unit

Overload
Detector
Unlocked
Detector

Y-OFFSETINPUTSTATUSOUTPUT
BS01-1033-12

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LIA-BVD-150-L /DS/R1/19/AUG03/ Page1of 9

Datasheet

LIA-BVD-150-L
Single-Board
Dual Phase Lock-In-Amplifier
Test Conditions

Vs = ± 15 V, Ta = 25°C

Voltage Input

Voltage Input Characteristic
Voltage Input Range
Voltage Input Coupling
Voltage Input Impedance
Voltage Input Noise
Voltage Input CMRR
Voltage Input Gain Drift

True Differential Instrumentation-Amplifier
3 µV ... 1V in 1-3-10 steps (for Full Scale Output)
AC or DC (selectable at Connector)
1 MΩ // 4 pF
12 nV/√Hz
110 dB @ 1 kHz, 100 dB @ 10 kHz
100 ppm/K

Current Input

Current Input Characteristic
Current Input Range
Current Input Noise
Current Input Source- Capacit.
Current Input Gain Error vs.
Source CapacitanceTransimpedance-Amplifier, -100 kV/A (inverting)
30 pA ... 10 µA in 1-3-10 steps (for Full Scale Output)
0.4 pA/√Hz
10 pF – 500 pF (recommended)

Specifications

Csf < 10 kHz

10 pF<1%100 pF<1%1 nF<2%Signal Filter

Signal Filter Lowpass (-3 dB BW) 1 MHz *, 100 kHz, 10 kHz, 1 kHz, 100 Hz; 6 dB/Oct.
Selectable per jumper
Signal Filter Highpass (-3 dB BW) 0.2 Hz, 1 Hz, 10 Hz, 100 Hz, 1 kHz; 6 dB/Oct.
selectable per jumper
Signal Filter Cutoff accuracy± 20 %
Max. Dynamic Reserve
80 dBSignal Monitor Output

Signal Monitor Output Gain
1 ... 3333 (depends on Gain-Setting)
Signal Monitor Output Voltage± 8 V max.
Signal Monitor Output Impedance 100 Ω
Signal Monitor Output Current± 10 mA max.
Note

When using Current Input with low Input Ranges, theMonitor Output may be disabled by opening the soldering
jumper at the Board (near JP1) to prevent from recoupling.

Demodulator

Demodulator Dynamic Reserve

15 dB @ Ultra Stable Setting
35 dB @ Low Drift Setting
55 dB @ High Dynamic Setting

Reference Input

Reference Input Voltage Range± 100 mV ... ± 5 V @ bip. Mode (0 V Comparator Threshold)- 5 V / +10 V @ TTL Mode (+2 V Comparator Threshold)1 MΩ
max. 2 s @ Fast Setting
max. 4 s @ Slow Setting

Reference Input ImpedanceReference Acquisition Time

Phase Shifter

Phase Shifter Type
Phase Shifter Range
Phase Shifter Resolution
Phase Shifter Drift
Phase Shifter Accuracy
Phase Shifter Orthogonality

Digital, Working Frequency 5 Hz ... 10 kHz
0 ... + 360 °1.4 °< 100 ppm/K< 0.3 °
< 0.1 °

Time Constants

Time Constant Range
3 ms ... 10 s in 1-3-10 steps
Time Const. Filter Characteristic 6 dB/Oct. or 12 dB/Oct. switchable

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Page 2Datasheet

LIA-BVD-150-L
Single-Board
Dual Phase Lock-In-Amplifier

Specifications (continued)
OutputOutput Channels
Output Voltage Range
Output Current
Output Impedance
Output DC-Stability

Output Basic Accuracy
Output Voltage Offset Range
Output Voltage Offset ControlVoltage Impedance

X = In Phase, Y = Quadrature, R = Magnitude± 10 V (@ 2 kΩ Load)± 5 mA max.
50 Ω
5 ppm/K @ Ultra Stable Setting
50 ppm/K @ Low Drift Setting500 ppm/K @ High Dynamic Setting
2 % (X and Y-Output) @ sinusoidal input signal
4 % (R-Output) @ sinusoidal input signal± 100 % Full Scale by ± 10 V Control Voltage> 2 kΩ

Status Indicator LED

Functions

Amplifier Overload Status
Reference PLL Unlocked Status

Digital Control

Control Input Voltage
Control Input Current
Digital Status Output Voltage
Digital Status Output Current

Low: - 0.8 V ... + 0.8 V, High: + 1.8 V ... + 12 V
0 mA @ 0V, 1.5 mA @ + 5 V, 4.5 mA @ + 12V typ.
Active: + 4.5 V typ., Non Active: 0 V typ.
10 mA max.

Power Supply

Supply Voltage
Supply Current± 15 Vdc ... ± 18 Vdc- 60 mA, + 100 mA

CaseBoard
Weight19” Euro-Card, (100 mm x 160 mm Board)
100 gr. (0.22 lbs)

Temperature Range

Storage Temperature
Operating Temperature- 40 ... + 100 °C
0 ... + 60 °C

Absolute Maximum Ratings

Signal Input AC Voltage
Signal Input DC Voltage
Reference Input Voltage
Control Input Voltage
Power Supply Voltage

50 Vpp± 70 V± 15 V- 5 V, + 15 V
± 22 V

Switch Settings

4 Dip Switch - Presettings

Switch OFFON
S1Low Drift & High Dynamic Ultra Stable & Low Drift
S2
1-f Mode
2-f Mode
S3
Fast PLL-Locking
Slow PLL-Locking
S4
Reference-InputReference-InputThreshold = 0 VThreshold = +2 V

Sensitivity Setting,
Output DC-Gain Modes

3 Output DC-Gain Modes are selectable:
Mode
DC-Gain
Dyn. Reserve DC-StabilityUltra Stable
10Low
HighLow Drift
100MediumMedium
High Dynamic 1000
HighLow
If only low dynamic reserve is required, select the higher
DC-Stability settings. Use Dip switch S1 to preselect either
the two upper or the two lower DC-Gain modes, then selectbest mode by Sensitivity switch settings 0–7 or 8–F.

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LIA-BVD-150-L
Single-Board
Dual Phase Lock-In-Amplifier

Switch Settings (continued)

S1 = ON: Sensitivity Settingfor Full Scale ( = 10 V Output)

Ultra Stable Mode
 Low Drift Mode
Setting Voltage Current  Setting Voltage Current
01V
10 µA  8100 mV
1 µA
1300 mV
3 µA  930 mV 300 nA
2100 mV
1 µA  A
10 mV 100 nA
330 mV 300 nA  B
3 mV30 nA
410 mV 100 nA  C1 mV10 nA
53 mV30 nA  D300 µV
3 nA
61 mV
10 nA  E100 µV
1 nA
7300 µV
3 nA  F
30 µV 300 pA

S1 = OFF: Sensitivity Settingfor Full Scale ( = 10 V Output)

Low Drift Mode High Dynamic ModeSetting Voltage Current  Setting Voltage Current0100 mV
1 µA  810 mV 100 nA
130 mV 300 nA  93 mV30 nA
210 mV 100 nA  A
1 mV10 nA
33 mV30 nA  B
300 µV
3 nA
41 mV10 nA  C
100 µV
1 nA
5300 µV
3 nA  D30 µV 300 pA
6100 µV
1 nA  E
10 µV 100 pA
730 µV 300 pA  F3 µV30 pA

Time Constant Setting

6 dB/Oct. 12 dB/Oct. Time Constant083 ms
1910 ms
2A30 ms
3B
100 ms
4C300 ms
5D1s
6E
3s
7F
10 s

Phase Shift Setting

Phase shift is adjusted by 2 phase switches with
8 Bit resolution. Values 0 ... 255 ( Hex 00 ... FF )correspond to phase shift setting 0 ... +360 °.
One step with switch marked “Coarse” changes phase shiftby 22.5 °. The “Fine”-switch changes phase shiftby 1.4 ° - steps:

CoarseFine+11,3°+8,4° 7 8 9 +14,1°+225°
AA655BB+90° 4
C +270° +5,6° 4
C +16°
DD
33EE221 0 F +19,7°+2,8°+45° 1 0 F +315°
0°0°+135°

6+180°
7 8 9If 2-f Mode is selected,
the resolution of digital phase control changes to 2.8 °and the phase shift range doubles to 0 ... + 720 °.

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LIA-BVD-150-L
Single-Board
Dual Phase Lock-In-Amplifier

Jumper Settings

Input Signal FilterSetting

Set Cut-Off Frequency of Input Lowpass Filter
with JP1 + JP2 (always same position) andHighpass Filter with JP3:Highpass Lowpass
JP3-3 dB Cut-Off  JP1, JP2 -3 dB Cut-Off
3–4
0.2 Hz  1 – 2
100 Hz
1–3
1 Hz  3 – 4
1 kHz
2–4
10 Hz  5 – 6
10 kHz
3–5
100 Hz  7 – 8100 kHz
4–6
1 kHz  none
1 MHz

Frequency Range
Selection

JP4
Frequency Range
1–2
normal operation
3, 4, 5, 6, 7, 8 test pins, do not use

Jumper Position Diagram

Control InterfaceExtension Connector
7 5 318 6 421JP2

7 5 3 1 JP18642
97 5 31Monitor Output

JP310 8 6 4 2 Filter ExtensionConnector

X Freq. Comp.

Y Freq. Comp.

1
Reference Oscillator
Extension Connector

X Offset Adjust
X Gain Adjust

Trimmer for Service
purposes only !

Amplitude Adjust
Frequency Adjust135
JP6 72468Optional Reference
Oscillator Module
2468

JP41 3 57

Y Offset Adjust
Y Gain Adjust

Lock-In-Amplifier Board

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Datasheet

LIA-BVD-150-L
Single-Board
Dual Phase Lock-In-AmplifierConnector

Connector TypeEuro-Card DIN 41612 Connector, 64 pin male, (a+c)

Input

Pin C2:
Pin C3:
Pin C4:
Pin C5:
Pin C7:
Pin C6:
Pin A2- A6:

Voltage Input, Non Inverting, DC-Coupled
Voltage Input, Non Inverting, AC-Coupled
Voltage Input, Inverting, AC-Coupled
Voltage Input, Inverting, DC-Coupled
Current Input
Current Amplifier Voltage Output
Input GND

Monitor Output

Pin C9:Pin A9:

Monitor Output
Monitor GND

OutputPin A12:
Pin C14:
Pin A14:
Pin C15:

R-Signal Output
X-Signal Output
Y-Signal Output
Output GND

Offset Input

Pin A10:
Pin A11:
Pin A13:

X-Offset Input
Y-Offset Input
Offset GND

Status Output

Pin C10:
Pin C11:
Pin C17:

Unlocked Status Output
Overload Status Output
Status Output GND (=Power Supply GND)

Power Supply

Pin A16+C16:
Pin A18+C18:
Pin A17+C17:

Power Supply – 15V
Power Supply + 15V
Power Supply GND

Remote Control Inputs(Opto-Isolated)

Pin C19:
Pin A19:
Pin C20:
Pin A20:
Pin A22:
Pin C21:
Pin A21:
Pin C22:
Pin A28:
Pin C28:
Pin A27:
Pin C27:
Pin A26:
Pin C26:
Pin A25:
Pin C25:
Pin C24:
Pin A23+A24:

Time Constant (TC0)Time Constant (TC1)Time Constant (TC2)Time Constant Slope (TCSL)
Sensitivity (SEN0)
Sensitivity (SEN1)
Sensitivity (SEN2)
Dynamic Mode (DYN0)
Phase Shift (PH0)
Phase Shift (PH1)
Phase Shift (PH2)
Phase Shift (PH3)
Phase Shift (PH4)
Phase Shift (PH5)
Phase Shift (PH6)
Phase Shift (PH7)
Disable Local Switch Control
Remote Control GND(Common Optocoupler Cathode)

Reference Input

Pin A32:
Pin A31:

Reference Input
Reference Input Ground

Reference Output(Connected only if optional
Oscillator Module is installed)

Pin A30:
Pin A17:
Pin A29:

Reference Output
Refer. Output GND (=Power Supply GND)
Reference Synchronization Input

Standard Control Interface(Connected only if optional
Control Interface Module(future product) is installed)

Pin C29:
Pin C30:
Pin C31:
Pin C32:

Interface 0
Interface 1
Interface 2Interface 3

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Datasheet

LIA-BVD-150-L
Single-Board
Dual Phase Lock-In-Amplifier

Remote Control Operation

GeneralRemote Control Input Bits are opto-isolated and connectedby logical OR to local switch setting.
The 4 hexadecimal switches are 4 Bit-coded as shown inthe following table:
MSBLSB
Switch Code Bit 3 Bit 2 Bit 1 Bit 0
0Low
Low
Low
Low
1Low
Low
Low
High2Low
Low
High Low
3Low
Low
High High
4Low
High Low
Low
5Low
High Low
High6Low
High High Low
7Low
High High High8High Low
Low
Low
9High Low
Low
HighA
High Low
High Low
BHigh Low
High HighCHigh High Low
Low
DHigh High Low
HighEHigh High High Low
F
High High High HighFor remote control a switch setting, set the local switch
to “0” and select the wanted setting via the 4-Bit-code
at the corresponding digital inputs.

Disable Local Switches

By forcing Input Bit "Disable Local Switch Control" (Pin C24)
to "High", the LIA is set to exclusively remote control
operation and the manual switches are out of function.

Sensitivity Switch Corresponding Inputs

Bit
Corresponding Control Port Input
Bit 0
SEN0 (Pin A22)
Bit 1
SEN1 (Pin C21)
Bit 2
SEN2 (Pin A21)
Bit 3
DYN0 (Pin C22)Time Constant Switch Corresponding Inputs

BitCorresponding Control Port InputBit 0
TC0(Pin C19)
Bit 1
TC1(Pin A19)
Bit 2
TC2(Pin C20)
Bit 3
TCSL (Pin A20)

Phase Switch Coarse Corresponding Inputs

BitCorresponding Control Port Input
Bit 0
PH4(Pin A26)
Bit 1
PH5(Pin C26)
Bit 2
PH6(Pin A25)
Bit 3
PH7(Pin C25)

Phase Switch Fine Corresponding Inputs

BitCorresponding Control Port InputBit 0
PH0(Pin A28)
Bit 1
PH1(Pin C28)
Bit 2
PH2(Pin A27)
Bit 3
PH3(Pin C27)

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Datasheet

LIA-BVD-150-LSingle-Board
Dual Phase Lock-In-Amplifier
Remote Control Example

For example, to select a switch setting code “6”, you haveto connect a “High”- level signal to the corresponding
control input pins Bit 1 & Bit 2. Mixed operation, e.g. local
phase settings and remote controlled sensitivity setting, isalso possible when "Disable Local Switch Control" (Pin C24)
is not active ("Low" or just not connected).

Dimensions

100 mm

30 mm

LOCK-IN-AMPLIFIER

Timeconst.

Sensitivity

PhaseCoarse

160 mmPhase
FineDyn.-Res.
Mode
PLL
Ref.-Thr.

L H
2f 1fS F
2V 0V

UnlockedOverload
Powermm1415141514128 mm

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Page 8

Datasheet

LIA-BVD-150-L
Single-Board
Dual Phase Lock-In-Amplifier

Optional Extensions

FEMTO Messtechnik GmbHPaul-Lincke-Ufer 34
D-10999 Berlin  Germany
Tel.: +49 (0)30 – 4 46 93 86
Fax: +49 (0)30 – 4 46 93 88
e-mail: info@femto.de
http://www.femto.de

Mounting Kit

Model No.: MK-LIA-2- 19” – Frontpanel, printed- EMI – shielding Board-Backplane

Reference Oscillator Module

Model No.: SOM-1- Frequency Range 5 Hz ... 130 kHz, User adjustable- Output Voltage 0 ... 2 Vrms, User adjustable- 100 ppm/K Amplitude Accuracy

Specifications are subject to change without notice. Information furnished herin is believed tobe accurate and reliable. However, no responsibility is assumed by FEMTO MesstechnikGmbH for its use, nor for any infringement of patents or other rights granted by implicationor otherwise under any patent rights of FEMTO Messtechnik GmbH. Product names
mentioned may also be trademarks used here for identification purposes only.
 by FEMTO Messtechnik GmbHPrinted in GermanySOPHISTICATED TOOLS FOR SIGNAL RECOVERYPage 9