36.0-42.0 GHz GaAs Transmitter
QFN, 7x7 mm
October 2006 - Rev 05-Oct-06
38TX0768-QB
Features
Sub-harmonic, Image Reject Transmitter
Integrated Mixer, LO Doubler/Buffer & Output Amplifier
+17.0 dBm Output Third Order Intercept (OIP3)
+2.0 dBm LO Drive Level
5.0 dB Conversion Gain
100% RF and DC Testing
Mimix Broadband’s 36.0-42.0 GHz GaAs transmitter has a +17.0 dBm
output third order intercept across the band. This device is a balanced,
resistive pHEMT mixer followed by a distributed output amplifier and
includes an integrated LO doubler and LO buffer amplifier. The use of
integrated LO doubler and LO buffer amplifier makes the provision of
the LO easier than for fundamental mixers at these frequencies. I and Q
mixer inputs are provided and an external 90 degree hybrid is required
to select the desired sideband. This device uses Mimix Broadband’s
0.15
µm
GaAs PHEMT device model technology, and is based upon
electron beam lithography to ensure high repeatability and uniformity.
This device is well suited for Millimeter-wave Point-to-Point Radio,
LMDS, SATCOM and VSAT applications.
General Description
Absolute Maximum Ratings
Supply Voltage (Vd)
Supply Current (Id1,Id2)
Gate Bias Voltage (Vg)
Input Power (IF Pin)
Storage Temperature (Tstg)
Operating Temperature (Ta)
Channel Temperature (Tch)
+6.0 VDC
350 mA
+0.3 VDC
0.0 dBm
-65 to +165
O
C
-55 to MTTF Table
3
MTTF Table
3
(3) Channel temperature affects a device's MTTF. It is
recommended to keep channel temperature as low as
possible for maximum life.
Electrical Characteristics (Ambient Temperature T = 25
o
C)
Parameter
Frequency Range (RF) Upper Side Band
Frequency Range (RF) Lower Side Band
Frequency Range (LO)
Frequency Range (IF)
Output Return Loss RF (S22)
Small Signal Conversion Gain IF/RF (S21)
2
LO Input Drive (P
LO
)
Leakage @ RF Port LOx1
Leakage @ RF Port LOx2
Output Third Order Intercept (OIP3)
1,2
Drain Bias Voltage (Vd)
Gate Bias Voltage (Vg1)
Gate Bias Voltage (Vg2) Mixer, Doubler
Dynamic Range Control (Vc)
Supply Current (Id) (Vd=4.0V)
Supply Current (Ic)
Units
GHz
GHz
GHz
GHz
dB
dB
dBm
dBm
dBm
dBm
VDC
VDC
VDC
VDC
mA
mA
Min.
36.0
36.0
16.0
DC
-
-
-
-
-
-
-
-
-
-2.0
-
-
Typ.
-
-
-
-
10.0
5.0
+2.0
-25.0
-10.0
+17.0
+4.0
-0.4
-0.5
-
240
0.0
Max.
42.0
42.0
26.0
4.0
-
-
-
-
-
-
-
-
-
0.0
-
-
(1) Measured using constant current.
(2) Measured using LO Input drive level of +2.0 dBm.
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 1 of 8
Characteristic Data and Specifications are subject to change without notice.
©2006
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
36.0-42.0 GHz GaAs Transmitter
QFN, 7x7 mm
October 2006 - Rev 05-Oct-06
38TX0768-QB
Transmitter Measurements
38TX0768-QB, USB Conv. Gain (dB) and Image Rejection (dBc)
10
5
CG (dB) and IR (dBc)
CG (dB) and IR (dBc)
0
-5
-10
-15
-20
-25
36
37
38
39
40
41
42
RF USB (GHz) [IF=2 GHz]
Conv Gain
Image Rej
10
5
0
-5
-10
-15
-20
-25
36
37
38
39
40
41
42
RF LSB (GHz) [IF=2 GHz]
Conv Gain
Image Rej
38TX0768-QB, LSB Conv. Gain (dB) and Image Rejection (dBc)
38TX0768-QB, 1xLO to RF Leakage (dBm), P_LO=+2dBm
0
1xLO to RF Leakage (dBm)
2xLO to RF Leakage (dBm)
-5
-10
-15
-20
-25
-30
17.0
0
-5
-10
-15
-20
-25
-30
17.0
38TX0768-QB, 2xLO to RF Leakage (dBm), P_LO=+2dBm
17.5
18.0
18.5
19.0
19.5
20.0
20.5
17.5
18.0
18.5
19.0
19.5
20.0
20.5
LO (GHz)
LO (GHz)
25
RFout-2xLO (dBc) vs. LO Freq
P_LO=+2 dBm, IF_in=-10dBm
38TX0768-QB, Output IP3 (dBm)
20
18
20
RFout-2xLO (dBc)
OIP3 (dBm)
16
14
15
12
10
8
6
10
5
4
2
USB
LSB
36
37
38
39
RF (GHz)
40
41
42
0
17.0
0
17.5
18.0
18.5
19.0
LO Freq (GHz)
19.5
20.0
20.5
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 2 of 8
Characteristic Data and Specifications are subject to change without notice.
©2006
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
36.0-42.0 GHz GaAs Transmitter
QFN, 7x7 mm
October 2006 - Rev 05-Oct-06
38TX0768-QB
Transmitter Measurements (cont.)
38TX0768-QB, Input IP3 (dBm)
18
16
14
12
IIP3 (dBm)
10
8
6
4
2
0
36
37
38
39
RF (GHz)
40
41
42
USB
LSB
CG (dB) and IIP3 (dBm)
20
15
10
5
0
-5
-10
-15
-20
-25
-30
-2.0
-1.8
CG @ USB
CG @ LSB
IIP3 @ USB
IIP3 @ LSB
38TX0768-QB, Conv Gain and IIP3 vs Vc (Dynamic Range)
RF=38GHz, IF=2GHz, P_IF=-3dBm/tone
-1.6
-1.4
-1.2
-1.0
Vc (V)
-0.8
-0.6
-0.4
-0.2
0.0
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 3 of 8
Characteristic Data and Specifications are subject to change without notice.
©2006
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
36.0-42.0 GHz GaAs Transmitter
QFN, 7x7 mm
October 2006 - Rev 05-Oct-06
38TX0768-QB
Physical Dimensions
Functional Schematic
VD
28
27
GND IF1
26
25
GND
24
23
22
Package Pin-out Table
Pin Number
4
7
8
9
11
18
25
27
All other pins
Pin
Name
RF Out
VC
VG1
VG2
IF2
LO IN
IF1
VD1
GND
Pin Function
RF Out
Gain Control
LNA, LO Amp
Mixer, Doubler
IF2 Input
LO Input
IF1 Input
Drain Bias
Ground
Nominal
Value
-2.0 to 0.0
-0.4
-0.5
+2.0
+4.0
Unit
Volts
volts
volts
dBm
volts
1
2
GND
RF OUT
GND
3
4
5
6
VC
7
PA
21
20
19
Balanced
Image
Reject
Mixer
LO
Buffer
GND
LO IN
GND
x2
18
17
16
15
8
VG1
9
10
11
IF2
12
GND
13
14
VG2 GND
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 4 of 8
Characteristic Data and Specifications are subject to change without notice.
©2006
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
36.0-42.0 GHz GaAs Transmitter
QFN, 7x7 mm
October 2006 - Rev 05-Oct-06
38TX0768-QB
Recommended Layout
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 5 of 8
Characteristic Data and Specifications are subject to change without notice.
©2006
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
stm32/stm8
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