United Monolithic Semiconductors CHV2242a-99F-00 Datasheet
CHV2242a
Q-band VCO based on Ku-band Oscillator
and Q-band Multiplier
GaAs Monolithic Microwave IC
Description
The CHV2242a is a monolithic multif unction for
frequency generation. It integrates a Ku-band
oscillator with frequency control (VCO), a Qband frequency multiplier and buffer amplifiers.
For performance optimisation, two external
ports (ERC1 and ERC2) allow a passive
resonator coupling to the oscillator ( at one third
of output frequency). On chip Schottky diode,
based on a P-HEMT, is used as varactor. All the
active devices are internally self biased.
The circuit is manufactured with the P-HEMT
process : 0.25µm gate length, via holes through
the substrate, air bridges and electron beam
gate lithography.
It is available in chip form.
Main Features
n Ku-band VCO + Q-band multiplier
n On chip varactor
n External resonator for centre f requency
control and phase noise optimisation
n Low phase noise
n Auxiliary output at VCO frequency
n High temperature rang e
n On-chip self biasing
n Automatic assembly oriented
n Chip size 2.41 x 1.18 x 0.1 mm
+V -V
F_VCO = F_out/3
MEDIUM Q
RESONATOR
ERC1
x3
ERC2
V_tune
Multifunction block diagram
38,7
38,6
38,5
38,4
38,3
Output frequency (GHz)
38,2
38,1
0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1 1,1 1,2
Tuning voltage (V)
Typical tuning characteristic
(coupled to a micro-strip filter
RF_out
(F_out)
Main Characteristics
Tamb = +25°C
Symbol Parameter Min Typ Max Unit
F_out Out put centre frequency 38 38.25 38.5 GHz
F_vco Oscillator frequency F_out/3
F_tune Output frequency tuning r ange 150 200 MHz
Pout Output power 5 7 dBm
ESD Protections : Electrostatic discharge sensitive device observe handling precautions !
Ref. : DSCHV22421074 -15-Mar.-01 1/8 Specifications subject to change without notic e
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
CHV2242a
Q-band VCO
Electrical Characteristics
Full temperature range, used accor ding to section “Typical assembly and bias configurat ion”
Symbol Parameter Min Typ Max Unit
F_out Out put centre frequency 38 38.25 38.5 GHz
F_vco VCO frequency (1) F_out/3
F_tune Frequency tuning range (at F_out ) ( 2) 150 200 MHz
P_out Output power 5 7 dBm
F_slope Frequency tuning slope (2) 500 MHz/V
V_tune Control voltage range 0.2 – 0.8 0 – 1.5 V
Pushing Frequency pushing vs positive supply
voltage
PN Phase noise (given at F_out) (2)
@ 10kHz
@ 100kHz
@ 1MHz
+V Positive supply voltage 4.4 4.5 4.6 V
+I Positive supply current 110 160 mA
-V Negative supply voltage -4.6 -4.5 - 4. 4 V
-I Negative supply current 5 8 mA
Top Operating temperature r ange -40 100 °C
(1) The centre frequency is given by the external passive resonator
(2) This characteristic depends on the resonator Q, the given performance has been
obtained by using a micro-strip filter used as resonator (see section “Proposed Exter nal
Medium Q Resonator”)
60 MHz/v
-48
-75
-100
-43
-70
-95
dBc/Hz
Absolute Maximum Ratings (1)
Symbol Parameter Values Unit
V_tune Tuning voltage 2.5 V
+V Positive supply voltage 5 V
-V Negative supply voltage -5 V
+I Positive supply current 250 mA
-I Negative supply current 15 mA
Tstg Storage temper at ur e r ange -55 to +155 °C
(1) Operation of this device above anyone of these parameters may cause permanent damage.
Ref. : DSCHV22421074 -15-Mar.-01 2/8 Specifications subject to change without notic e
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
Q-band VCO
Chip Mechanical Data and Pin References
CHV2242a
Unit = µm
External chip size = 2410 x 1180 +/- 35
Chip thickness = 100 +/- 10
HF Pads (2, 16,19) = 68 x 118
DC/IF Pads = 100 x 100
Pin number Pin name Description
1,3,5,15,17,18,20
2 ERC1
4 V-tune
5,7,9,10,14
6
8,12 -V
11,13 +V
16 RF_out
19 ERC2
21 AUX
Ground : should not be bonded. If required, please ask
for more information.
External Resonator Coupling Port 1
Tuning voltage input port
NC
GND (optional)
Negative supply voltage
Positive supply voltage
RF output at 38GHz
External Resonator Coupling Port 2
Auxiliary RF output at 12.7GHz (RF_out / 3) (optional)
Ref. : DSCHV22421074 -15-Mar.-01 3/8 Specifications subject to change without notic e
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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