SHF Communication Technologies AG,
Wilhelm-von-Siemens-Str. 23 D • 12277 Berlin–Marienfelde • Germany
Phone ++49 30 / 772 05 10 • Fax ++49 30 / 753 10 78
E-Mail: sales@shf.biz • Web: http://www.shf.biz

Preliminary Datasheet
SHF 105C
Amplifier for Cryogenic Environment

Preliminary specifications – SHF 105C
Absolute maximum ratings (20K < Tcase < 348K)
Parameter

SymbolUnit

MinTypMax

Drain Voltage Stage 1

VD1

V05.5

Drain Voltage Stage 2

VD2

V05.5

Drain Voltage Stage 3

VD3

V05.5

Drain Current Stage 1

ID1mA170

Drain Current Stage 2ID2mA170

Drain Current Stage 3ID3mA170

First Gate Voltage Stage 1

VG1_1

V-30First Gate Voltage Stage 2

VG1_2

V-30First Gate Voltage Stage 3

VG1_3

V-30Second Gate Voltage Stage 1

VG2_1

V-3+3Gain Control Voltage

VCNTV05

Input Signal Level

VinVppCase Temperature

Tcase

K

Power dissipation

PDW

Conditions

1203482.8

SHF reserves the right to change specifications and design without notice – SHF 105C – Rev.1 – 19. April. 2006

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Preliminary specifications – SHF 105C
Recommended operating conditions for Maximum Gain Performance
All Data at Tambient = 22°C unless otherwise specified
Parameter

SymbolUnitMinTypMaxConditions

Drain Voltage Stage 1

VD1V4.7

Drain Voltage Stage 2

VD2V4.7

Drain Voltage Stage 3

VD3V

4.7

Drain Current Stage 1

ID1

mA

60

Depends on VG1_1

Drain Current Stage 2

ID2

mA

60

Depends on VG1_2

Drain Current Stage 3

ID3

mA80

Depends on VG1_3

First Gate Voltage Stage 1

VG1_1

V-1

First Gate Voltage Stage 2

VG1_2

V-1

First Gate Voltage Stage 3

VG1_3

V-1

Second Gate Voltage Stage 1VG2_1

V

1.7

Self-biasing from VD1(VG2_1 = VD1 x 0.38), Note 1

Gain Control Voltage

VCNTV0Max Gain, Note 2Power dissipation

PDW

1

Recommended operating conditions for minimum Noise Figure Performance
All Data at Tambient = 22°C unless otherwise specified
Parameter

SymbolUnit

MinTypMaxConditions

Drain Voltage Stage 1

VD1

V

2.5

Drain Voltage Stage 2

VD2V

2.5

Drain Voltage Stage 3

VD3V

4.7

Drain Current Stage 1

ID1mA30

Depends on VG1_1

Drain Current Stage 2

ID2mA30

Depends on VG1_2

Drain Current Stage 3ID3mA60

Depends on VG1_3

First Gate Voltage Stage 1

VG1_1

V-1.7

First Gate Voltage Stage 2

VG1_2

V-1.7

First Gate Voltage Stage 3

VG1_3

V-1

Second Gate Voltage Stage 1

VG2_1

V0.9

Self-biasing from VD1(VG2_1 = VD1 x 0.38), Note 1

Gain Control Voltage

VCNTV0Max Gain, Note 2Power dissipation

PDW

0.5

SHF reserves the right to change specifications and design without notice – SHF 105C – Rev.1 – 19. April. 2006

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Electrical characteristics – SHF 105C
All Data at Tambient = 22°C and Recommended operating conditions for Maximum Gain Performanceunless otherwise specifiedParameter

SymbolUnitMinTypHigh frequency 3dB pointfHighGHz2530

Low frequency 3dB pointfLowkHzSmall Signal Gain

GpdB

Temperature coefficient (Gp)

TcdB/°C-0.035dB±1.5Gain ripple
Gain control Voltage-Current

VCNT
ICNT

VmAMax

Conditions
0dB@40MHz; -27dBm input power

65
210dB@40MHz; -27dBm input power-27dBm@40MHz

00+53reduces Small Signal Gain,
Note 2Group delay

ps±50> 40MHz < 25GHz,
100MHz aperture

Output jitter, RMS value

ps0.7

Output voltage ~1Vpp

Rise time/fall time

tr/tf

ps

20

20…80%

Noise figure

NFdB6at 5 GHz

Output power at 1 dBcompression

P01dBdBm(Vpp)9(1.8)<30 GHz

Output power at saturation

PsatdBm(Vpp)

11(2.2)<30 GHz

Input return loss

S11dB

-15-10-5< 10 GHz< 32 GHz< 45 GHz

Output return loss

S22dB

-12-10-5< 20 GHz< 32 GHz< 45 GHz

Power dissipation

PDW0.85

Input and output connector--Input V-female, Output V-male;
Other config. on request

Power supply connector--Micro-D 15 Socket Connector(Glenair) see Note 3

Note 1: For standard operation it is not required to apply a voltage to VG2_1. VG2_1 is self-biased by avoltage derived from VD1 (VG2_1 = VD1 x 0.38).
Note 2: The gain reduction functionality will be provided by precision potentiometers when using theSHF bias control box, which is capable to supply ten SHF 105C at the same time.
Without using the bias control box, it is required to operate the first amplifier stage in constantcurrent mode by applying an external regulation which controls VG1_1. In this case an applied
voltage at VCNT will cause a linear reduction of the drain current of approximately 10mA/V.
Alternatively VG2_1 can be used to control the small signal gain. In this case VCNT is not beingused.
Note 3: For connecting the Micro D-15 socket a connector with cable pigtail can be provided byGlenair (Part No: DCDM15P-6E5-18.0MC240) or by SHF as an option.
SHF reserves the right to change specifications and design without notice – SHF 105C – Rev.1 – 19. April. 2006

Page 4/8

S-Parameters – SHF 105C
Measured at Tambient = 22°C and Recommended operating conditions for Maximum Gain Performance

Aperture of Group Delay measurement: 100MHz

SHF reserves the right to change specifications and design without notice – SHF 105C – Rev.1 – 19. April. 2006

Page 5/8

Eye diagrams at 20 Gbps – SHF 105C
Measured at Tambient = 22°C and Recommended operating conditions for Maximum Gain Performance
Input Signal: 68 mVpp

Output Signal: 950 mVpp

Measured with Agilent 83484A with 86118A plug-in (70 GHz) and 86107A precision time base.
Signal source: SHF BPG 44 E. Pattern length: 231-1.

Eye diagrams at 40 Gbps – SHF 105C
Measured at Tambient = 22°C and Recommended operating conditions for Maximum Gain Performance
Input Signal: 66 mVpp

Output Signal: 847 mVpp

Measured with Agilent 83484A with 86118A plug-in (70 GHz) and 86107A precision time base.
Signal source: SHF BPG 44 E. Pattern length: 231-1.

SHF reserves the right to change specifications and design without notice – SHF 105C – Rev.1 – 19. April. 2006

Page 6/8

Gain characteristic at cryogenic temperatures – SHF 105C
3530

Gain [dB]

252023k (~ -250°C)

15100k (~ -173°C)
10300k (~ 27°C)
5051015202530

3540

Frequency [GHz]
Based on measurement results provided by courtesy of International Superconductivity Technology Center(ISTEC), JapanSHF reserves the right to change specifications and design without notice – SHF 105C – Rev.1 – 19. April. 2006

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58.50

M
52.

51.00

17.00

Mechanical drawings – SHF 105C

x5m
4(x16.50)

31.00

m

OUT

IN

35.00

6.35

29.00
13.50

9 10 11 1213 1415

GND*)1 2 3 4 5 6 7 8

Pin No.

Function

1

Gaincontrol (Cnt)

2

Drainvoltage first stage (D1)

3

Gatevoltage first stage (G1)

4

Drainvoltage second stage (D2)5

Gatevoltage second stage (G2)

6

Drainvoltage third stage (D3)7

Gatevoltage third stage (G3)8Common Ground (GND)

9Second gate first stage (G2_1)

10..15Not connected

Pin numbering according to view *)SHF reserves the right to change specifications and design without notice – SHF 105C – Rev.1 – 19. April. 2006

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