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CND2050
0.5-11.5 GHz Divide by 4 Static Prescaler
GaAs Monolithic Microwave IC Description
The CND2050 is a low power consumption and very high speed divider by 4 manufactured with a 0.6m GaAs self aligned implanted MESFET process. The design is full differential input/output that allows direct drive into 50 load. The CND2050 is available in SOIC8 package form .
UMS
CND2050
Main Features
Very broad operating frequency range Low power dissipation: 250mW Single supply operation:+ 5V or -5V High input sensitivity: -10dBm@10 GHz at 25C Low phase noise: -139dBc/Hz at 1KHz
SOIC8 plastic package
Main Characteristics
at Tamb= +25C Symbol Vdd Vss Pdiss Fmin Fmax Parameter Bias supply (with Vss = 0) Bias supply (with Vdd = 0) Power dissipation Minimum input frequency Maximum input frequency (Vdd=5V) 10 12 Min 3.3 -6 90 Typ 5 -5 250 Max 6 -3.3 350 0.5 Unit V V mW GHz GHz
ESD Protections: Electrostatic discharge sensitive device. Observe handling precautions!
Ref. : DSCND20500257 -13-Sep.-00 1/9 Specifications subject to change without notice
United Monolithic Semiconductors S.A.S.
Route Departementale 128 - B.P.46 - 91401 Orsay Cedex France Tel. : +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
CND2050
Electrical Characteristics (1)
0.5-10GHz frequency divider by 4
Guaranteed electrical specifications at +25C Tested under configuration described in Fig.1 and Fig.2 Vdd = 5V , Vss = 0 ; Pin = 0 dBm ; Zo = 50 Symbol Fmin Parameter Minimum input frequency (Differential or single input) Fmax Maximum input frequency differential input single input Pout Minimum output power (Differential or single input) -5 -2 dBm 10 9 12 11 GHz GHz 0.5 GHz Min Typ Max Unit
Guaranteed electrical specifications at +25C Tested under configuration described in Fig.1 Differential inputs ; Vss = 0 ; Pin = 0 dBm ; Zo = 50 Symbol Fmin Parameter Minimum input frequency Vdd = 3.3 to 5 V Fmax Maximum input frequency Vdd = 5V Vdd = 3.3V Pout Minimum output power Vdd = 5V Vdd =3.3V -5 -10 -2 -7 dBm dBm 10 9 12 11 GHz GHz 0.5 GHz Min Typ Max Unit
Ref. : DSCND20500257 -13-Sep.-00
2/9
Specifications subject to change without notice
United Monolithic Semiconductors S.A.S.
Route Departementale 128 - B.P.46 - 91401 Orsay Cedex France Tel. : +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
0.5-11.5 GHz Divide by 4 prescaler
Electrical Characteristics (2)
CND2050
Guaranteed electrical specifications over the temperature range of -40C to +85C Tested under configuration described in Fig.1 Differential inputs ; Vss = 0 ; Pin = 0 dBm ; Zo = 50 Symbol Fmin Parameter Minimum input frequency Vdd = 3.3 to 5 V Fmax Maximum input frequency Vdd = 5V Vdd = 3.3V Pout Minimum output power Vdd = 5V Vdd =3.3V -6 -11 -3 -8 dBm dBm 9 8 11 10 GHz GHz 0.5 GHz Min Typ Max Unit
Guaranteed electrical specifications over the temperature range of -40C to +85C Single or differential inputs ; Vss = 0 ; Zo = 50 Symbol Pin max Parameter Maximum operational input power Vdd = 3.3 to 5 V Idd Supply current Vdd= 5V Vdd=3.3V Hr Harmonic rejection (ouput signal) 35 20 10 45 25 70 40 mA mA dBc 10 dBm Min Typ Max Unit
Ref. : DSCND20500257 -13-Sep.-00
3/9
Specifications subject to change without notice
Route Departementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
CND2050
0.5-11.5 GHz Divide by 4 prescaler
Absolute Maximum Ratings (1)
Tamb= 25C Symbol Vdd Pin Top Tstg Drain voltage Maximum input power (2) Operating temperature range Storage temperature range Parameter Values 7 15 -40 to +85 -65 to +175 Units V dBm C C
(1) Operation of this device above anyone of these parameters may cause permanent damage (2) Duration <1s.
Typical Characteristics (1)
Typical input power versus frequency
20 Pin max 10 Vdd=3,3V RECOMMENDED OPERATIONAL RANGE AT Vdd=5V 0 Vdd=5V
Pin (dBm)
-10
-20
-30
Pin min
-40
-50 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Frequency (GHz)
Tamb= 25C, Zo=50, Vdd=5V or 3.3V ; Vss = 0 ; differential inputs
Ref. : DSCND20500257 -13-Sep.-00
4/9
Specifications subject to change without notice
Route Departementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
0.5-11.5 GHz Divide by 4 prescaler
CND2050
Typical Characteristics (2)
Typical input power versus frequency
5 0 -5 -10 Pin min (dBm) -15 single input -20 differential inputs -25 -30 -35 -40 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Frequency (GHz)
Tamb= 25C, Zo=50, Vdd=5V ; Vss = 0 ; differential inputs or single input
20 max 10 - 40C +85C 0 +25C
Pin (dBm)
-10
-20 min -30
-40
-50 0 1 2 3 4 5 6 7 Frequency (GHz) 8 9 10 11 12 13 14
Tamb= -40 to +85C, Zo=50, Vdd=5V ; Vss = 0 ; differential inputs
Ref. : DSCND20500257 -13-Sep.-00
5/9
Specifications subject to change without notice
Route Departementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
CND2050
Typical Characteristics (3)
Output power versus frequency
0
Vdd=5V
0.5-11.5 GHz Divide by 4 prescaler
Bias current versus Vdd
60
-2 Pout (dBm) -4 -6
Vdd=3,3V
50 Idd (mA)
40
30
-8 -10 0 1 2 3 4 5 6 7 8 F (GHz) 9 10 11 12 13 14 20 3 4 Vdd (V) 5 6
Tamb= 25C, Zo=50, Vdd=5V or 3.3V ; Vss = 0 ; differential inputs or single input
SSB Phase noise versus Offset Frequency (Fin=4GHz)
0 SSB phase noise (dBc/Hz) -20 -40 -60 -80 -100 -120 -140 -160 10 100 1000 Offset frequency (Hz) 10000 100000
Ref. : DSCND20500257 -13-Sep.-00
6/9
Specifications subject to change without notice
Route Departementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
0.5-11.5 GHz Divide by 4 prescaler
Typical bias tuning
Vdd
CND2050
1 nF Signal generator 50 Ohms load Tansmission lines are 50 Ohms 0| 1 nF 180|
1
8
1 nF Spectrum analyzer 50 Ohms load
1 nF
Vss
Vss
4
5
Fig.1 : Typical measurement and RF biasing configuration with differential inputs
Vdd
Signal generator 50 Ohms load Tansmission lines are 50 Ohms
1 nF
1
8
1 nF
Q F/4 RF output (50 Ohms)
QB 1 nF Vss Vss 1 nF 50 Ohms
4
5
Fig.2 : RF biasing configuration with single input and ouput
Vdd
Vdd
Internal divider by 4
CK CKB 5K 5K Q QB 500 Vss Fig.3 : Chip block diagram
Ref. : DSCND20500257 -13-Sep.-00 7/9 Specifications subject to change without notice
500
Vss
Route Departementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
CND2050
SOIC8 Mechanical Data
0.5-11.5 GHz Divide by 4 prescaler
5+/-0.15 [0.20+/-0.006] 3.81 [.15] 1.27 [0.05] 0.2 [0.006]
8 6+/-0.15 [.236+/-.006]
5
UMS CND2050
3.7 [.145]
0.1+/-0.15 [.004+/-.006] 1.4 [0.055]
1
4
0.4 [.015] 8 max Unit: mm [In] General tolerance +/-0.05 [+/-.002] : 1.7 max [0.067]
Pin out 1 2 3 4 5 6 7 8
Signal Vdd CK CKB Vss Vss QB Q Vdd
Ordering Information
SOIC8 Package : CND2050-DAF/20
Information furnished is believed to be accurate and reliable. However United Monolithic Semiconductors S.A.S. assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of United Monolithic Semiconductors S.A.S.. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. United Monolithic Semiconductors S.A.S. products are not authorised for use as critical components in life support devices or systems without express written approval from United
Ref. : DSCND20500257 -13-Sep.-00 8/9 Specifications subject to change without notice
Route Departementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
0.5-11.5 GHz Divide by 4 prescaler
Monolithic Semiconductors S.A.S.
CND2050
Ref. : DSCND20500257 -13-Sep.-00
9/9
Specifications subject to change without notice
Route Departementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09

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