CHV2411aQDG
RoHS COMPLIANT
Fully Integrated HBT K-band VCO
GaAs Monolithic Microwave IC
In QFN package
Description
The CHV2411a-QDG is a monolithic
multifunction for frequency generation. It
integrates a X-band “push-push” oscillator with
frequency control (VCO) thanks to base-
collector diodes, used as varactors, a K-band
buffer amplifiers and a divider by 8. The VCO is
fully integrated on HBT process. All the active
devices are internally self biased.
The circuit is fully integrated on InGaP HBT
process: 2µm emitter length, via holes through
the substrate and high Q passive elements.
The chip is delivered in a 24 Leads RoHS
compliant QFN4x4 package.
Main Features
K-band VCO+K-band buffers+Prescalar/8
Fully integrated VCO (no need for external
Resonator
Low phase noise
High temperature range
High frequency stability
On chip self biased devices
Standard SMD package : 24L-QFN4x4
Main Characteristics
Symbol
F_out
F_vco
IF_out
Pout
PFI
PN
Parameter
Specified output frequency range
Oscillator frequency
Output Intermediate frequency
Output power at F_out
Output power at Intermediate frequency (IF)
SSB Phase Noise @ F_out @ 100 kHz
13
-3
Min
24
Typ
24.125
F_out/2
F_out/16
16
0
-90
-80
Max
24.25
Unit
GHz
GHz
GHz
dBm
dBm
dBc/Hz
ESD Protection : Electrostatic discharge sensitive device. Observe handling precautions !
Ref. : DSCHV2411aQDG7254 - 11 Sept 07
1/10
Specifications subject to change without notice
United Monolithic Semiconductors S.A.S.
Route Départementale 128 - B.P.46 - 91401 Orsay Cedex France
Tel. : +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
CHV2411aQDG
Electrical Characteristics
Full temperature range
VCO & buffer Part
Symbol
F_out
F_vco
V_Tune
Parameters
Output Frequency range (Operating band)
VCO frequency
Voltage Tuning range
Tuning sensitivity
Frequency drift rate
Harmonics ½ F_out
Harmonics 3/2 F_out
Harmonics 2 F_out
SSB Phase Noise given @ F_out @ 100 KHz
Main Output (RF_Out) VSWR
Pulling into 2:1 VSWR for all phases
Pushing @ within the V_tune range
Output Power on RF_out port
Positive supply current
13
Min
24
1
250
Typ
F_out/2
400
5
K-band VCO
Max
24.25
6
725
-20
-40
-20
-80
8
Unit
GHz
V
MHz/V
MHz/°
C
dBc
dBc
dBc
dBc/Hz
MHz
MHz/V
dBm
mA
H1
H3
H4
PN
-90
2:1
P_out
16
140
250
19
170
Prescalar Part
Symbol
IF_out
Parameters
IF Output Frequency
Output Power
Positive supply current
Prescalar Output (IF) VSWR
Min
-3
Typ
F_out/16
0
80
2:1
Max
Unit
GHz
dBm
mA
110
General
Symbol
VB,V1,VB1,V2,V
B2,VD
+I
(IB1+IB2+I1+I2)
Top
Parameters
Positive supply voltage
Total Positive supply current
Operating temperature range
-40
Min
Typ
5
220
Max
Unit
V
mA
°
C
280
+100
All the parameters are specified between 1V and 6V of Tuning Voltage
Remark :
The minimum and maximum values take into account the spread due to the operating temperature
and process spread.
These performance has been obtained with the chip in QFN package assembled on the
recommended boards (ref. 96348 B) described in this document. These performances are highly
dependent on this environment.
Absolute Maximum Ratings
(1)
Symbol
V_tune
+V
+ID
+IB1 / +IB2
+I1 / +I2
+IB
Top
Tstg
Parameters
Positive Tuning voltage
Positive supply voltage
Positive supply current (Prescalar)
Positive supply current (buffers 2 & 3)
Positive supply current (VCO+ buffer 1)
Positive supply current (prescalar‘s buffer)
Operating temperature range (2)
Storage temperature range
Values
10
6
120
50 / 55
35 / 50
15
-40 to +100
-55 to +125
Unit
V
V
mA
mA
mA
mA
°
C
°
C
(1) Operation of this device above anyone of these parameters may cause permanent damage. Duration < 1s
(2) temperature of the back side of the QFN package
Ref. : DSCHV2411aQDG7254 - 11 Sept 07
2/10
Specifications subject to change without notice
Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
K-band VCO
CHV2411aQDG
Typical QFN measurements on board 95791 (QFN plan)
Remark : The temperature mentioned below is taken at the back side of the QFN package.
Sensitivity versus Vtune
T=100°C
T=25°
C
T= - 40°
C
Output Frequency versus Vtune
T= - 40°
C
T=25°
C
T=100°C
Ref. : DSCHV2411aQDG7254 - 11 Sept 07
3/10
Specifications subject to change without notice
Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
CHV2411aQDG
K-band VCO
Output Power @24GHz versus Vtune
T=25°
C
T= - 40°
C
T=100°C
IF Output Power versus Vtune
T=100°C
T=25°
C
T= - 40°
C
Ref. : DSCHV2411aQDG7254 - 11 Sept 07
4/10
Specifications subject to change without notice
Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
K-band VCO
CHV2411aQDG
Phase Noise vs
versus Vtune
Phase Noise
Tuning Voltage
@ 10 kHz from Carrier
T=25°
C
@ 100 kHz from Carrier
Phase
Noise vs Offset frequency from
carrier
Phase
Noise versus Offset frequency from
carrier
0,00
-10,00
-20,00
-30,00
-40,00
P
hase N
oise (dB z)
c/H
-50,00
-60,00
-70,00
-80,00
-90,00
-100,00
-110,00
-120,00
-130,00
1,00
- 40°C
Over Operating Tuning Range
100°C
10,00
100,00
1000,00
Offset Frequency from Carrier (kHz)
Ref. : DSCHV2411aQDG7254 - 11 Sept 07
5/10
Specifications subject to change without notice
Route Départementale 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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