United Monolithic Semiconductors CHV2241-99F-00 Datasheet
CHV2241
K-band Oscillator with integrated Q-band Harmonic
Mixer
GaAs Monolithic Microwave IC
Description
The CHV2241 is a monolithic multifunction
proposed for frequency generation and
transposition. It integrates a K-band oscillator, a
Q-band harmonic mixer and buffer amplifiers.
For performance optimisation, an external port
(ERC) allows a passive resonator coupling to
the oscillator (at half output frequency). 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 K-band Oscillator + Q-band harmonic
mixer
n External resonator for centre f requency
control and phase noise optimisation
n High quality oscillator when coupled to
a dielectric resonator
n Low conversion loss
n High temperature rang e
n On chip self biasing
n Automatic assembly oriented
n Chip size 1.82 x 0.97 x 0.1 mm
F_lo = (F_rf - F_if)/2
HIGH Q
RESONATOR
Multifunction block diagram
0
-1
-2
-3
-4
-5
-6
-7
Conversion loss (dB)
-8
-9
-10
37 37,5 38 38,5 39
Typical conversion loss characteristic
+V -V RF
ERC
LO_out_aux
RF Frequency (GHz)
x2
IF
Main Characteristics
Tamb = +25°C
Symbol Parameter Min Typ Max Unit
F_rf RF frequency 37.5 38.25 39 GHz
F_lo Oscillator frequency (F_rf - F_if) / 2
Pn Oscillator phase noise @ 100kHz (38GHz) -100 dBc/Hz
Lc Conversion loss 7 dB
ESD Protections : Electrostatic discharge sensitive device observe handling precautions !
Ref. : DSCHV22411074 -15-Mar.-01 1/8 Specifications subject to change without notic e
Route Départementale 128 - B.P .46 - 91401 Orsay Cedex France
united monolithic s emiconductors S.A .S.
Tel. : +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
CHV2241
K-band Oscillator / Q-band Mixer
Electrical Characteristics
Full temperature range, used accor ding to section “Typical assembly and bias configurat ion”
Symbol Parameter Min Typ Max Unit
F_rf RF frequency 37.5 38.25 39 GHz
F_if IF frequency 0.1 1.5 GHz
F_lo Oscillator frequency (1) (F_rf - F_if) / 2
P_lo Auxiliary LO output power (optional) -15 -8 -4 dBm
Pn Phase noise (given at RF frequency) (2)
@ 1kHz
@ 10kHz
@ 100kHz
@ 200kHz
@ 1MHz
P_V+ Frequency pushing vs positive supply
voltage
Lc Conversion loss 3 7 11 dB
P_1dB_rf RF input power at 1dB -13 -8 0 dBm
Plolk_if LO leakage at IF port (3) -25 -18 dBm
P2lo_rf 2LO leakage at RF por t (3) -40 -30 dBm
VSWR_rf VSWR at RF input port 2:1 2. 5:1
IMP_if IF load impedance 50
+V Positive supply voltage (4) 4.4 4.5 4.6 V
+I Positive supply current 50 90 mA
-V Negative supply voltage (4) -4.6 -4.5 -4.4 V
-I Negative supply current 6 10 mA
Top Operating temper at ure range -40 +100 °C
-45
-78
-105
-114
-129
300 1000 kHz/v
-35
-68
-95
-104
-119
dBc/Hz
Ω
(1) The centre frequency is given by the external passive resonator.
See part “Proposed external high Q resonator“ for frequency temperature drift
example.
DRO frequency long term stability is DR environment stability dependant
(hermeticity …).
(2) This characteristic depends on the external resonator Q, the given performance has
been obtained by using an external dielectric resonator ( see section “Proposed External
High Q resonator”)
(3) Without external filtering
(4) Negative supply voltage must be applied at least 1us before positive supply
voltage.
Ref. : DSCHV22411074 -15-Mar.-01 2/8 Specifications subj ect 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 Oscillator / Q-band Mixer
CHV2241
Absolute Maximum Ratings (1)
Symbol Parameter Values Unit
P_rf Maximum RF input power (2) 7 dBm
+V Positive supply voltage 5 V
-V Negative supply voltage -5 V
+I Positive supply current 100 mA
-I Negative supply current 15 mA
Tstg Storage temperature rang e -55 to +155 °C
(1) Operation of this device above anyone of these parameters may cause permanent damage.
(2) CW mode.
Ref. : DSCHV22411074 -15-Mar.-01 3/8 Specifications subj ect 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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