Sony CXG1081TN Datasheet
CXG1081TN
Receiving Dual-Band Mixer
Description
The CXG1081TN is a receiving dual-band mixer
MMIC. This IC is designed using the Sony's GaAs JFET process.
Features
• High conversion gain Gc = 9.5 to 10.0dB (Typ.)
• Low noise figure NF = 4.6 to 4.7dB (Typ.)
• Single 2.7V power supply operation
• Low LO input power operation PLO = –15dBm
• Single CTL pin achieved by the built-in inverter circuit
• 10-pin small package
Applications
800MHz Japan digital cellular telephones (PDC)
Structure
GaAs J-FET MMIC
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage VDD 4.5 V
• Input power PIN +5 dBm
• Current consumption IDD (Mixer block) 15 mA
• Operating temperature Topr –35 to +85 °C
• Storage temperature Tstg –65 to +150 °C
Recommended Operating Conditions
• Supply voltage VDD 2.7 to 3.3 V
• Control voltage VCTL (H) 2.4 to 3.3 V
VCTL (L) 0 to 0.3 V
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E99654A9Z-PS
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
16 pin TSSOP (Plastic)
Block Diagram
56
110IF OUT
RFIN1
LO IN
RFIN2
Pin Configuration
IF OUT/VDD3 (MIX)
10
V
DD1 (LO AMP1)
9
GND
8
CTL
7
RFIN1
LO IN
V
DD2 (LO AMP2)
GND
OPT
RFIN2
6
1
2
3
4
5
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CXG1081TN
Electrical Characteristics
Conditions: VDD = 2.7V, VCTL (H) = 2.7V, VCTL (L) = 0V, fRF1 = 870MHz, fRF2 = 820MHz,
fLO = fRF – 130MHz, PLO = –15dBm, unless otherwise specified
(Ta = 25°C)
Item
Current
consumption
Control
current
Conversion
gain
Noise figure
Input IP3
LO to RF
leak level
Symbol
IDD
ICTL
GC
NF
IIP3
PLK
Path VCTL
VDD1, VDD2
VDD3 → GND
CTL → GND
CTL → GND
RFIN1 → IFOUT
RFIN2 → IFOUT
RFIN1 → IFOUT
RFIN2 → IFOUT
RFIN1 → IFOUT
RFIN2 → IFOUT
LOIN → RFIN1
LOIN → RFIN2
H
L
H
L
H
L
H
L
H
L
H
L
H
L
Min. Typ. Max. Unit
— 5.7 7.3 mA
—
35 70
–1
0 —
µA
dB
dB
dBm
8 9.5 11.5
— –17 –12
— –19 –14
8 10 11.5
— 4.6 6.5
— 4.7 6.5
dBm
— –29 –23
—
–29
–23
0 –2.5 —
0.5 3 —
Measurement condition
When no signal
When a small signal
PRF = –25dBm,
offset = 100kHz
Conversion by the IM3
suppression ratio for
two-wave input
fLO = 690MHz
fLO = 740MHz
Note) The values shown above are the specified values on the Sony's recommended evaluation board.
– 3 –
CXG1081TN
Recommended Evaluation Circuit
10
9
8
7
V
DD2 (LO AMP2)
RFIN2
L9
R1
L10
L11
50Ω
6
1
2
3
4
5
LO IN
L3
50Ω
L5
C6
C7
VDD1 (LO AMP1)
V
DD3 (MIX)
IF OUT
RFIN1
CTL
L7 L6
L8
50Ω
50Ω
L1
L2
C3
C2
C1
L4
C5 C4
L1
L2
L3
L4
L5
L6
L7
L8
L9
L10
120nH
82nH
27nH
33nH
39nH
27nH
15nH
18nH
33nH
8.2nH
L11
C1
C2
C3
C4
C5
C6
C7
R1
15nH
6pF
1000pF
1000pF
100pF
1000pF
100pF
1000pF
470Ω
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