NEC UPC1679G-E2, UPC1679G-E1, UPC1679G Datasheet
DATA SHEET
DATA SHEET
BIPOLAR ANALOG INTEGRATED CI RCUIT
PC1679G
µµµµ
5 V-BIAS, +15.5 dBm OUTPUT, 1.8 GHz WIDEBAND
Si MMIC AMPLIFIER
DESCRIPTION
The µPC1679G is a silicon monolithic integrated circuit designed as medium output power amplifier for high
frequency system applications. Due to +13 dBm TYP. output at 1 GHz, this IC is recommendable for transmitter
stage amplifier of L Band wireless communication systems. This IC is packaged in 8-pin plastic SOP.
This IC is manufactured using NEC’s 20 GHz fT NESATTMIV silicon bipolar process. This process uses silicon
nitride passivation film and gold electrodes. These materials can protect chip surface from external pollution and
prevent corrosion/migration. Thus, this IC has excellent performance, uniformity and reliability.
FEATURES
• Supply voltage : VCC = 4.5 to 5.5 V
• Saturated output power : P
• Wideband response : fu = 1.8 GHz TYP. @ 3 dB bandwidth
• Isolation : ISL = 34 dB TYP. @ f = 500 MHz
• Power Gain : GP = 21.5 dB TYP. @ f = 500 MHz
ORDERING INFORMATION
Part Number Package Marking Supplying Form
µ
PC1679G-E1 Embossed tape 12 mm wide.
µ
PC1679G-E2
Remark
To order evaluation samples, please contact your local NEC sales office.
(Part number for sample order:
8-pin plastic SOP (225 mi l ) 1679
O(sat)
= +15.5 dBm TYP. @ f = 500 MHz with external inductor
1 pin is tape pull-out directi on.
Qty 2.5 kp/reel.
Embossed tape 12 mm wide.
1 pin is tape roll-in directi on.
Qty 2.5 kp/reel.
PC1679G)
µ
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. P12434EJ4V0DS00 (4th edition)
Date Published September 1999 N CP(K)
Printed in Japan
Caution Electro-static sensitive devices.
The mark shows major revision points.
1994, 1999©
EQUIVALENT CIRCUIT PIN CONNECTIONS
µµµµ
PC1679G
IN 1
67 342
ABSOLUTE MAXIMUM RATINGS
Parameter Symbol Conditions Rating Unit
Supply Voltage V
Input Power P
Power Dissipation P
Operating Ambient Temperature T
Storage Temperature T
8 V
CC
5 OUT
INPUT
1
(Top View)
2GND
3GND
4GND
CC
TA = +25 °C, pin 5, pin 8 6 V
in
TA = +25 °C +10 dBm
D
Mounted on double copper clad 50 × 50 × 1.6 mm
A
epoxy glass PWB (T
A
stg
= +85 °C)
360 mW
45 to +85 °C
−
55 to +150 °C
−
8V
CC
7 GND
6 GND
5 OUTPUT
RECOMMENDED OPERATING RANGE
Parameter Symbol MIN. TYP. MAX. Unit Notice
Supply Voltage V
Operating Ambient Temperature T
ELECTRICAL CHARACTERISTICS (TA = +25 °C, VCC = V
Parameter Symbol Conditions MIN. TYP. MAX. Unit
Circuit Current I
Power Gain G
Noise Figure NF f = 500 MHz
Upper Limit Operating Frequency f
Isolation ISL f = 500 M Hz 29 34
Input Return Loss RL
Output Return Loss RL
Saturated Output Power P
CC
A
CC
P
u
out
O(sat)
4.5 5.0 5.5 V The same voltage should be applied
to pin 5 and 8
45 +25 +85 °C
−
out
= 5.0 V, ZS = ZL = 50
No signal 32 40 49 mA
f = 500 MHz 19.5 21.5 23.5 dB
−
3 dB down below the gain at 0.1 GHz
in
f = 500 MHz 9 12
1.5 1.8
f = 500 MHz 1 3
f = 500 MHz, Pin = +3 dBm +13.5 +15.5
)
ΩΩΩΩ
6.0 8.0 dB
−
−
−
−
−
GHz
dB
dB
dB
dBm
2
Data Sheet P12434EJ4V0DS00
µµµµ
PC1679G
TEST CIRCUIT
V
CC
1 800 pF
C
3
L: 20.5 T, 2 mm I.D., 0.25 UEW
L
(about 300 nH)
C
2
50 Ω
OUT
IN
50 Ω
1
C
1 800 pF
8
1
5
1 800 pF
2, 3, 4, 6, 7
INDUCTOR FOR THE OUTPUT PIN
The internal output transistor of this IC consumes 30 mA, to output medium power. To supply current for output
CC
transistor, connect an inductor between the V
pin (pin 8) and output pin (pin 5). Select large value inductance, as
listed above.
The inductor has both DC and AC effects. In terms of DC, the inductor biases the output transistor with minimum
voltage drop to output enable high level. In terms of AC, the inductor make output-port impedance higher to get
enough gain. In this case, large inductance and Q is suitable.
φ
CAPACITORS FOR THE V
Capacitors of 1 800 pF are recommendable as the bypass capacitor for the V
CC
, INPUT AND OUTPUT PINS
CC
pin and the coupling capacitors
for the input and output pins.
The bypass capacitor connected to the VCC pin is used to minimize ground impedance of VCC pin. So, stable bias
can be supplied against VCC fluctuation.
The coupling capacitors, connected to the input and output pins, are used to cut the DC and minimize RF serial
impedance. Their capacitance are therefore selected as lower impedance against a 50 Ω load. The capacitors thus
perform as high pass filters, suppressing low frequencies to DC.
To obtain a flat gain from 100 MHz upwards, 1 800 pF capacitors are used in the test circuit. In the case of under
10 MHz operation, increase the value of coupling capacitor such as 10 000 pF. Because the coupling capacitors are
determined by equation, C = 1/(2 πRfc).
Data Sheet P12434EJ4V0DS00
3
TYPICAL CHARACTERISTICS (Unless otherwise specified, TA = +25 °C)
CIRCUIT CURRENT vs. OPERATATING
CIRCUIT CURRENT vs. SUPPLY VOLTAGE
60
No Signal
50
AMBIENT TEMPERATURE
60
No Signal
CC
= 5.0 V
V
50
µµµµ
PC1679G
40
(mA)
CC
30
20
Circuit Current I
10
0
0123456 –60–40–200+20+40+60+80+100
NOISE FIGURE AND INSERTION
POWER GAIN vs. FREQUENCY
25
9
20
8
(dB)
P
15
7
10
6
Noise Figure NF (dB)
5
4
5
Insertion Power Gain G
0
40
(mA)
CC
30
20
Circuit Current I
10
0
Supply Voltage VCC (V) Operating Ambient Temperature T
INSERTION POWER GAIN vs. FREQUENCY
VCC = 5.5 V
G
P
VCC = 5.0 V
VCC = 4.5 V
25
20
(dB)
P
15
VCC = 5.0 V
TA = –45 °C
TA = +25 °C
TA = +85 °C
10
VCC = 5.5 V
5
NF
VCC = 5.0 V
Frequency f (GHz)
VCC = 4.5 V
3.01.00.30.10.030.01
Insertion Power Gain G
0
Frequency f (GHz)
A
(°C)
3.01.00.30.10.030.01
INPUT RETURN LOSS AND OUTPUT
ISOLATION vs. FREQUENCY
0
RETURN LOSS vs. FREQUENCY
+10
VCC = 5.0 VVCC = 5.0 V
–10
–20
–30
(dB)
(dB)
out
in
–10
–20
0
RL
RL
out
in
Isolation ISL (dB)
–40
–50
3.01.00.30.10.030.01
Frequency f (GHz)
4
Data Sheet P12434EJ4V0DS00
–30
Input Return Loss RL
Output Return Loss RL
–40
3.01.00.30.10.030.01
Frequency f (GHz)
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