THORLABS PDA20CS2, User Manual

Page: 9 / 16

InGaAs Switchable Gain Detector Chapter 6: Specifications
Rev D, April 21, 2020 Page 7
Chapter 6 Specifications
All performance specifications are typical, performed at 25 °C ambient temperature,
and assume a 50 Ω load, unless stated otherwise.
2
The PDA20CS2
has a 50 Ω series terminator resistor (i.e. in series with amplifier output). This
forms a
voltage divider with any load impedance (e.g. 50 Ω load divides signal in half).
3
Tested at 1550 nm wavelength.
Performance Specifications
2
0 dB Setting 40 dB Setting
Gain (Hi-Z) 1.51 x 10
3
V/A ±2% Gain (Hi-Z) 1.51 x 10
5
V/A ±2%
Gain
(50 Ω)
0.75 x 10
3
V/A ±2% Gain
(50 Ω)
0.75 x 10
5
V/A ±2%
Bandwidth
3
11 MHz
Bandwidth
3
90 kHz
Noise (RMS)
286 μV
Noise (RMS)
240 μV
NEP 6.1 x 10
-11
W/

Hz NEP 1.95 x 10
-12
W/

Hz
Offset
±8 mV (Typ.)
±12 mV (Max)
Offset
±8 mV (Typ.)
±12 mV (Max)
10 dB Setting 50 dB Setting
Gain (Hi-Z) 4.75 x 10
3
V/A ±2% Gain (Hi-Z) 4.75 x 10
5
V/A ±2%
Gain
(50 Ω)
2.38 x 10
3
V/A ±2% Gain
(50 Ω)
2.38 x 10
5
V/A ±2%
Bandwidth
3
1.5 MHz
Bandwidth
3
28 kHz
Noise (RMS)
201 μV
Noise (RMS)
260 μV
NEP
5.7 x 10
-12
W/

Hz
NEP
2.24 x 10
-12
W/

Hz
Offset
±8 mV (Typ.)
±12 mV (Max)
Offset
±8 mV (Typ.)
±12 mV (Max)
20 dB Setting 60 dB Setting
Gain (Hi-Z) 1.5 x 10
4
V/A ±2% Gain (Hi-Z) 1.5 x 10
6
V/A ±5%
Gain (50
Ω)
0.75 x 10
4
V/A ±2% Gain
(50 Ω)
0.75 x 10
6
V/A ±5%
Bandwidth
3
1 MHz Bandwidth
3
9 kHz
Noise (RMS)
236 μV
Noise (RMS)
300 μV
NEP 2.93 x 10
-12
W/

Hz NEP 2.25 x 10
-12
W/

Hz
Offset
±8 mV (Typ.)
±12 mV (Max)
Offset:
±8 mV (Typ.)
±12 mV (Max)
30 dB Setting 70 dB Setting
Gain (Hi-Z) 4.75 x 10
4
V/A ±2% Gain (Hi-Z) 4.75 x 10
6
V/A ±5%
Gain
(50 Ω)
2.38 x 10
4
V/A ±2% Gain
(50 Ω)
2.38 x 10
6
V/A ±5%
Bandwidth
3
260 kHz
Bandwidth
3
3 kHz
Noise (RMS)
234 μV
Noise (RMS)
396 μV
NEP
2.19 x 10
-12
W/

Hz
NEP
2.28 x 10
-12
W/

Hz
Offset
±8 mV (Typ.)
±12 mV (Max)
Offset
±8 mV (Typ.)
±12 mV (Max)