Datasheet

LIA-MV-150
Lock-In-Amplifier ModuleFeaturesWorking Frequency 10 Hz ... 45 kHz
Digital Phase Shifter 0 ... 360°
Current and Voltage Input
Parameter Control by local Switches and opto-isolated digital Inputs
Compact and EMI-Shielded Case

Applications






Spectroscopy
Luminescence, Fluorescence, Phosphorescence Measurements
Light Scattering Measurements
Opto-electronical Quality Control
Integration in Industrial and Scientific Measurement-Systems

Block Diagram

Voltage-/Current
Input Selector

Progr. Gain
AC-Amplifier

Lowpass-Filter

Highpass-Filter

fgo= 150 kHz
12 dB/Oct.

fgu= 0.4 Hz
6 dB/Oct.

Lowpass-Filter

Progr. Gain
DC-Amplifier

SIGNALINPUTTransimpedance
AmplifierGain=-1kV/A

Reference
Comparator

REFERENCE
INPUT

DigitalPhase-Shifter

PSD

X-OFFSETINPUT
X-OUTPUTR * cos( ϕ)∆ϕ∆ϕ =0 ... 360°

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

Optocoupler
Isolate Unit
CONTROL
INPUTS

ManualSwitches

Parameter
Control Unit

Overload
Detector
Unlocked
Detector

STATUSOUTPUT
BS01-1051-16

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Datasheet

LIA-MV-150
Lock-In-Amplifier Module

SpecificationsVoltage Input

Test Conditions

Vs = ± 15 V, Ta = 25°C

Voltage Input Characteristic

Model “-S”: Single-Ended Instrumentation-Amplifier
Model “-D”: True Differential Instrumentation-Amplifier
3 µV ... 100 mV in 1-3-10 steps (for Full Scale Output)
AC, 0.015 Hz
Model “-S”: 1 MΩ // 4 pF
Model “-D”: 2 MΩ // 2 pF differential
12 nV/√Hz
Model “-D”: 110 dB @ 1 kHz, 100 dB @ 10 kHz
100 ppm/K

Voltage Input Range
Voltage Input Coupling
Voltage Input Impedance
Voltage Input Noise
Voltage Input CMRRVoltage Input Gain Drift
Current Input

Current Input Characteristic
Current Input Range
Current Input Noise
Current Input Source- Capacit.
Current Input Gain Error vs.
Source CapacitanceTransimpedance-Amplifier, -1 kV/A (inverting)
3 nA ... 100 µA in 1-3-10 steps (for Full Scale Output)
13 pA/√Hz
10 pF – 1 nF (recommended)Cs
f < 20 kHz
10 pF<1%
100 pF
<1%
1 nF
<2%

Signal Filter

Signal Filter Lowpass (-3 dB BW) 150 kHz; 12 dB/Oct.
Signal Filter Highpass (-3 dB BW) 0.4 Hz; 6 dB/Oct.
Signal Filter Cutoff accuracy± 20 %

Demodulator

Demodulator Dynamic Reserve

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

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

OutputOutput Channels
Output Voltage Range
Output Current
Output Impedance
Output DC-Stability
Output Basic Accuracy
Output Voltage Offset Range
Output Voltage Offset ControlVoltage Impedance

Digital, Working Frequency 10 Hz ... 45 kHz
0 ... + 360 °1.4 °< 100 ppm/K< 0.3 °

X = In Phase± 10 V (@ 2 kΩ Load)± 5 mA max.
50 Ω
50 ppm/K @ Low Drift Setting
500 ppm/K @ High Dynamic Setting
2 %, Frequency > 30 kHz 5% @ sinusoidal input signal± 100 % Full Scale by ± 10 V Control @ Low Drift Setting± 100 % Full Scale by ± 1 V Control @ High Dyn. Setting
22 kΩ

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LIA-MV-150
Lock-In-Amplifier Module

Specifications (continued)
Status Indicator LED

Functions

Amplifier Overload Status
Reference PLL Unlocked Status

Digital Control

Control Input Voltage

Digital Status Output Current

Low: - 0.8 V ... + 0.8 V
High: + 1.8 V ... + 12 V, TTL / CMOS compatible
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 ... ± 20 Vdc- 60 mA, + 100 mA

Case

WeightMaterial

370 gr. (0.86 lbs)
AlMg4.5Mn, nickel-plated

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

20 Vpp± 30 V
± 30 V- 5 V, + 30 V
± 22 V

Control Input Current
Digital Status Output Voltage

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LIA-MV-150
Lock-In-Amplifier Module

Switch Settings

3 Dip Switch - Presettings

Switch OFFON
S1
Reference-InputReference-InputThreshold = 0 V
Threshold = 2 V
S2Fast PLL-Locking
Slow PLL-Locking
S3
Current Input
Voltage Input

Sensitivity Setting,General8 steps of input AC-gain are selectable. Output DC-gain
is selectable in 2 settings. The DC-gain settings aremarked as "Low Drift" and "High Dynamic" mode:
Mode
DC-Gain
Dyn. Reserve DC-StabilityLow Drift100LowHighHigh Dynamic 1000
HighLow
Select mode by sensitivity switch settings 0–7 or 8–F.
If only low dynamic reserve is required, select the highDC-stability settings ("Low Drift" mode).

Sensitivity Settingfor Full Scale ( = 10 V Output)

Low Drift Mode High Dynamic ModeSetting Voltage Current  Setting Voltage Current0100 mV 100 µA  810 mV10 µA
130 mV
30 µA  93 mV
3 µA
210 mV
10 µA  A
1 mV
1 µA
33 mV
3 µA  B
300 µV 300 nA
41 mV
1 µA  C100 µV 100 nA5300 µV 300 nA  D30 µV
30 nA
6100 µV 100 nA  E
10 µV
10 nA
730 µV
30 nA  F
3 µV
3 nA

Time Constant Setting

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

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Datasheet

LIA-MV-150
Lock-In-Amplifier Module
Phase Shift Setting

Phase shift is adjusted by 2 phase switches with8 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°
A
6A
55B
B+90° 4
C +270° +5,6° 4
C +16°
DD
3322EE
1 0 F +19,7°+2,8°+45° 1 0 F +315°
0°0°+135°

Connectors

Signal Input

6+180°
7 8 9Model “-S”: BNC
Model “-D”: LEMO Series 1S, 4-pin fixed Socket
Voltage Input: Pin 1: Non Inverting Input
Pin 2: Inverting Input
Pin 3: GND
Pin 4: N.C.
Current Input: Pin 1: Current Amplifier Input
Pin 2: If Current Input is used,connect to Pin 3 (GND)
Pin 3: GND
Pin 4: N.C.
PIN 2

PIN 1

PIN 3

PIN 4

Reference Input

BNCOutput

BNC

Power Supply

LEMO Series 1S, 3-pin fixed Socket
Pin 1: + 15V
Pin 2: - 15V
Pin 3: GND
PIN 2-Vs

PIN 1+Vs
PIN 3
GND

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Datasheet

LIA-MV-150
Lock-In-Amplifier Module
Control Port

Sub-D 25-pin, female, Qual. Class 2
Pin 1:+12V (Stabilized Power Supply Output)
Pin 2:-12V (Stabilized Power Supply Output)
Pin 3:
AGND (Analog Ground)Pin 4:+5V (Stabilized Power Supply Output)
Pin 5:
X-OutputPin 6:
Overload Status Output
Pin 7:
Unlocked Status Output
Pin 8:
X-Output Offset Control Input
Pin 9:
DGND (Ground f. Digital Control Pin 10 - 25)
Pin 10:
Dynamic Mode (DYN0)
Pin 11:
Sensitivity (SEN0)
Pin 12:
Sensitivity (SEN1)
Pin 13:
Sensitivity (SEN2)
Pin 14:
Time Constant Slope (TCSL)
Pin 15:Time Constant (TC0)
Pin 16:Time Constant (TC1)
Pin 17:
Time Constant (TC2)
Pin 18:Phase Shift (PH0)
Pin 19:Phase Shift (PH1)
Pin 20:Phase Shift (PH2)
Pin 21:
Phase Shift (PH3)
Pin 22:Phase Shift (PH4)
Pin 23:Phase Shift (PH5)
Pin 24:Phase Shift (PH6)
Pin 25:Phase Shift (PH7)

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Datasheet

LIA-MV-150
Lock-In-Amplifier Module

Remote Control Operation

GeneralRemote control input bits are opto-isolated and connectedby logical OR to local switch setting. The 4 hexadecimalswitches are 4 bit-coded as shown in the following table:
MSB
LSBSwitch 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
B
High Low
High HighCHigh High Low
Low
DHigh High Low
HighEHigh High High Low
F
High High High HighFor remote control a Lock-In-Amplifier switch setting,
set the local switch to “0” and select the wanted setting via
a 4-bit-code at the corresponding digital inputs:

Sensitivity Switch Corresponding Inputs

BitCorresponding Control Port Input
Bit 0
SEN0 (Pin 11)
Bit 1
SEN1 (Pin 12)
Bit 2
SEN2 (Pin 13)
Bit 3
DYN0 (Pin 10)

Time Constant Switch Corresponding Inputs

BitCorresponding Control Port Input
Bit 0TC0(Pin 15)
Bit 1
TC1(Pin 16)
Bit 2
TC2(Pin 17)
Bit 3
TCSL (Pin 14)

Phase Switch Coarse Corresponding Inputs

BitCorresponding Control Port Input
Bit 0PH4(Pin 22)
Bit 1PH5(Pin 23)
Bit 2PH6(Pin 24)
Bit 3PH7(Pin 25)

Phase Switch Fine Corresponding Inputs

BitCorresponding Control Port Input
Bit 0PH0(Pin 18)
Bit 1PH1(Pin 19)
Bit 2PH2(Pin 20)
Bit 3PH3(Pin 21)
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 setting and remote controlled sensitivity setting, isalso possible.

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Datasheet

LIA-MV-150
Lock-In-Amplifier Module

Dimensions

157 mm
150 mm

15 mm

137 mm0REF-

OUTPUT

POWER

INPUT

14 mm

15 mm

051 mm

038 mm

044 mm

INPUT∅ 3.3 mm

41 mm
50 mm
57 mm
74 mm
90 mm

27 mm

14 mm

19 mm

120 mm

DZ01-1051-13a

Ordering Information

Available Models

Model No.: LIA-MV-150-S- Singe-Ended Input (BNC-Connector Input)
Model No.: LIA-MV-150-D- True Differential Input (LEMO-Connector Input)

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.deSpecifications 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 GmbH
Printed in Germany

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