Datasheet CND2050-DAF-20 Datasheet (United Monolithic Semiconductors)

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 0.6µm GaAs self
aligned implanted MESFET process.
The design is full differential input/output
that allows direct drive into 50Ω load.

The CND2050 is available in SOIC8
package form .

CND2050

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 25°C
 Low phase noise: -139dBc/Hz at 1KHz

SOIC8 plastic package

Main Characteristics

at Tamb= +25°C

Symbol Parameter Min Typ Max Unit

Vdd Bias supply (with Vss = 0) 3.3 5 6 V
Vss Bias supply (with Vdd = 0) -6 -5 -3.3 V

Pdiss Power dissipation 90 250 350 mW

Fmin Minimum input frequency 0.5 GHz

Fmax Maximum input frequency (Vdd=5V) 10 12 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 Départementale 128 - B.P.46 - 91401 Orsay Cedex France

Tel. : [phone] - Fax : [phone]

CND2050

0.5-10GHz frequency divider by 4

Electrical Characteristics (1)

Guaranteed electrical specifications at +25°C
Tested under configuration described in Fig.1 and Fig.2
Vdd = 5V , Vss = 0 ; Pin = 0 dBm ; Zo = 50 Ω

Symbol Parameter Min Typ Max Unit

Fmin 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

Guaranteed electrical specifications at +25°C
Tested under configuration described in Fig.1
Differential inputs ; Vss = 0 ; Pin = 0 dBm ; Zo = 50 Ω

Symbol Parameter Min Typ Max Unit

Fmin Minimum input frequency

Vdd = 3.3 to 5 V 0.5 GHz

10

9

12
11

0.5 GHz

GHz
GHz

Fmax Maximum input frequency

Vdd = 5V
Vdd = 3.3V

Pout Minimum output power

Vdd = 5V
Vdd =3.3V

Ref. : DSCND20500257 -13-Sep.-00 2/9 Specifications subject to change without notice

United Monolithic Semiconductors S.A.S.

Route Départementale 128 - B.P.46 - 91401 Orsay Cedex France

Tel. : [phone] - Fax : [phone]

10

9

-5

-10

12
11

-2

-7

GHz
GHz

dBm
dBm

0.5-11.5 GHz Divide by 4 prescaler

CND2050

Electrical Characteristics (2)

Guaranteed electrical specifications over the temperature range of -40°C to +85°C
Tested under configuration described in Fig.1
Differential inputs ; Vss = 0 ; Pin = 0 dBm ; Zo = 50 Ω

Symbol Parameter Min Typ Max Unit

Fmin Minimum input frequency

Vdd = 3.3 to 5 V 0.5 GHz

Fmax Maximum input frequency

Vdd = 5V
Vdd = 3.3V

Pout Minimum output power

Vdd = 5V
Vdd =3.3V

Guaranteed electrical specifications over the temperature range of -40°C to +85°C
Single or differential inputs ; Vss = 0 ; Zo = 50 Ω

Symbol Parameter Min Typ Max Unit

Pin max Maximum operational input power

Vdd = 3.3 to 5 V 10 dBm

9
8

-6

-11

11
10

-3

-8

GHz
GHz

dBm
dBm

Idd Supply current

Vdd= 5V
Vdd=3.3V

Hr Harmonic rejection (ouput signal) 10 dBc

Ref. : DSCND20500257 -13-Sep.-00 3/9 Specifications subject to change without notice

Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE

Tel.: [phone] - Fax : [phone]

35
20

45
25

70
40

mA
mA

CND2050

Absolute Maximum Ratings (1)

Tamb= 25°C

Symbol Parameter Values Units

Vdd Drain voltage 7 V

Pin Maximum input power (2) 15 dBm

0.5-11.5 GHz Divide by 4 prescaler

Top

Operating temperature range -40 to +85

Tstg Storage temperature range -65 to +175 °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

Vdd=3,3V

-10

10

0

RECOMMENDED OPERATIONAL RANGE AT Vdd=5V

°C

Vdd=5V

Pin (dBm)

-20

-30

-40

-50

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Pin min

Frequency (GHz)

Tamb= 25°C, Zo=50Ω, Vdd=5V or 3.3V ; Vss = 0 ; differential inputs

Ref. : DSCND20500257 -13-Sep.-00 4/9 Specifications subject to change without notice

Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE

Tel.: [phone] - Fax : [phone]

0.5-11.5 GHz Divide by 4 prescaler

Pin min (dBm)

Pin (dBm)

max

Typical Characteristics (2)

Typical input power versus frequency

5

0

-5

-10

-15

-20

-25

-30

CND2050

single input

differential inputs

-35

-40
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Frequency (GHz)

Tamb= 25°C, Zo=50Ω, Vdd=5V ; Vss = 0 ; differential inputs or single input

20

10

+85°C +25°C

0

-10

-20

min

-30

- 40°C

-40

-50
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Frequency (GHz)

Tamb= -40 to +85°C, Zo=50Ω, Vdd=5V ; Vss = 0 ; differential inputs

Ref. : DSCND20500257 -13-Sep.-00 5/9 Specifications subject to change without notice

Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE

Tel.: [phone] - Fax : [phone]

CND2050

Pout (dBm)

0.5-11.5 GHz Divide by 4 prescaler

Typical Characteristics (3)

Output power versus frequency Bias current versus Vdd

0

Vdd=5V

-2

-4

-6

Vdd=3,3V

-8

-10
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

F (GHz)

60

50

40

Idd (mA)

30

20

3 4 5 6

Tamb= 25°C, Zo=50Ω, Vdd=5V or 3.3V ; Vss = 0 ; differential inputs or single input

SSB Phase noise versus Offset Frequency (Fin=4GHz)

Vdd (V)

0

-20

-40

-60

-80

-100

-120

SSB phase noise (dBc/Hz)

-140

-160
10 100 1000 10000 100000

Offset frequency (Hz)

Ref. : DSCND20500257 -13-Sep.-00 6/9 Specifications subject to change without notice

Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE

Tel.: [phone] - Fax : [phone]

0.5-11.5 GHz Divide by 4 prescaler

Signal

generator

50 Ohms

load

Tansmission lines

are 50 Ohms

1

nF1 nF

Q

Vdd

QB

50 Ohms

1

nF

Vss

Vss

50 Ohms

load

Tansmission lines

are 50 Ohms

Spectrum

analyzer

50 Ohms

load1 nF1 nF1 nF1 nF

0¦

Vdd

Vss

Vss

Typical bias tuning

CND2050

1

Signal generator

180°¦

4

8

5

Fig.1 : Typical measurement and RF biasing configuration with differential inputs

1 nF

1

8

F/4 RF output (50 Ohms)

CK

CKB

4

5

Fig.2 : RF biasing configuration with single input and ouput

Vdd Vdd

Internal divider by 4

5K

Vss

5K

Fig.3 : Chip block diagram

500

500

Vss

Q

QB

Ref. : DSCND20500257 -13-Sep.-00 7/9 Specifications subject to change without notice

Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE

Tel.: [phone] - Fax : [phone]

CND2050

5+/-0.15

[0.20+/-0.006]

3.81

[.15]

1.27

[0.05]

0.4

[.015]8° max

1.7

max

1.4

[0.055]

0.1+/-0.15

[.004+/-.006]

0.2

[0.006]

Unit: mm [In]

General tolerance

: +/-0.05 [+/-.002]

[0.067]

CND2050

SOIC8 Mechanical Data

8 5

UMS

6+/-0.15

[.236+/-.006]

0.5-11.5 GHz Divide by 4 prescaler

3.7

[.145]

Ordering Information

1

4

Pin out Signal

1 Vdd
2 CK
3 CKB
4 Vss
5 Vss
6 QB
7 Q
8 Vdd

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 Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE

Tel.: [phone] - Fax : [phone]

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 Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE

Tel.: [phone] - Fax : [phone]