Designed with InGaP process technology for improved reliability,
a Darlington configuration is utilized for broadband performance
up to 6 Ghz. The heterojunction increases breakdown voltage
and minimizes leakage current between junctions. Cancellation
of emitter junction non-linearities results in higher suppression
of intermodulation products.
NGA-686
DC-6000 MHz, Cascadable GaAs
HBT MMIC Amplifier
See Application Note AN-059 for Alternates
OBSOLETE
Small Signal Gain vs. Frequency
25
20
15
dB
Product Features
11.4dB Gain, 19.2 dBm P1dB at 1950Mhz
Cascadable 50 ohm: 1.2:1 VSWR
Operates from Single Supply
Low Thermal Resistance Package
Unconditionally Stable
Applications
PA Driver Amplifier
Cellular, PCS, GSM, UMTS
IF Amplifier
Wireless Data, Satellite
Units
dBm
Frequency
850 M Hz
1950 M Hz
2400 M Hz
850 M Hz
1950 M Hz
2400 M Hz
850 M Hz
1950 M Hz
2400 M Hz
DC - 6000 M Hz
DC - 6000 M Hz
2000 M Hz
5.3
72
10.7
Min.
Ty p.
19.8
19.2
17.9
38.4
34.9
32.7
11.9
11.4
11.2
5800
1.2:1
1.3:1
6.1
5.8
80
121
6.3
88
13.1
Max.
10
5
0
0
Sy mbol
P
1dB
1
2
3
4
5
Frequency GHz
Parameter
6
7
8
Output Pow er at 1dB Compression
OIP
3
Output Third Order Intercept Point
dBm
G
Small Signal Gain
dB
M Hz
-
-
dB
V
mA
°C/W
Bandw idth
Determined by Return Loss (>10dB)
Input VSWR
Output VSWR
NF
V
D
I
D
R
TH
, j-l
Noise Figure
Device Operating Voltage
Device Operating Current
Thermal Resistance (junction to lead)
Test Conditions:
V
S
= 8 V
R
BIAS
= 27 Ohms
I
D
= 80 mA Typ.
T
L
= 25ºC
OIP
3
Tone Spacing = 1 MHz, Pout per tone = 0 dBm
Z
S
= Z
L
= 50 Ohms
The information provided herein is believed to be reliable at press time. Sirenza Microdevices assumes no responsibility for inaccuracies or omissions. Sirenza Microdevices assumes no responsibility for the use of
this information, and all such information shall be entirely at the users own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are
implied or granted to any third party. Sirenza Microdevices does not authorize or warrant any Sirenza Microdevices product for use in life-support devices and/or systems. Copyright 2001 Sirenza Microdevices, Inc..
All worldwide rights reserved.
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
1
http://www.sirenza.com
EDS-101106 Rev OBS
Preliminary
OBSOLETE
NGA-686 DC-6.0 GHz 5.9V GaAs HBT
Key parameters, at typical operating frequencies:
Ty pical
Test Condition
Parameter
25ºC
(I
D
= 80mA, unless otherwise noted)
Unit
500 MHz
Gain
Output IP3
Output P1dB
Input Return Loss
Isolation
850 MHz
Gain
Output IP3
Output P1dB
Input Return Loss
Isolation
1950 MHz
Gain
Output IP3
Output P1dB
Input Return Loss
Isolation
2400 MHz
Gain
Output IP3
Output P1dB
Input Return Loss
Isolation
11.9
38.5
19.9
21.4
19.7
11.9
38.4
19.8
20.7
19.8
11.4
34.9
19.2
18.4
19.7
11.2
32.7
17.9
17.6
19.7
dB
dBm
dBm
dB
dB
dB
dBm
dBm
dB
dB
dB
dBm
dBm
dB
dB
dB
dBm
dBm
dB
dB
Tone spacing = 1 MHz, Pout per tone = 0dBm
Tone spacing = 1 MHz, Pout per tone = 0dBm
Tone spacing = 1 MHz, Pout per tone = 0dBm
Tone spacing = 1 MHz, Pout per tone = 0dBm
Absolute Maximum Ratings
Parameter
Max.
Device Current
(I
D
)
Max.
Device
Voltage (V
D
)
Max.
RF Input Pow er
Max.
Junction Temp
. (T
J
)
Operating Temp
. Range (T
L
)
Absolute Limit
1
20
mA
7V
+13 dBm
+150°C
-40°C to +85°C
+150°C
Max.
Storage Temp
.
Operation of this device beyond any one of these limits may
cause permanent damage. For reliable continous operation,
the device voltage and current must not exceed the maximum
operating values specified in the table on page one.
Bias Conditions should also satisfy the follow ing expression:
I
D
V
D
< (T
J
- T
L
) / R
TH
, j-l
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
2
http://www.sirenza.com
EDS-101106 Rev OBS
Preliminary
OBSOLETE
NGA-686 DC-6.0 GHz 5.9V GaAs HBT
S-parameters over frequency, at 25ºC
S21, I
D
=80mA, T=25ºC
S12, I
D
=80mA, T=25ºC
25
20
15
dB
0
-5
-10
dB
10
5
0
0
1
2
3
4
5
6
7
8
Frequency GHz
S11, I
D
=80mA, T=25ºC
-15
-20
-25
0
1
2
3
4
5
6
7
8
Frequency GHz
S22, I
D
=80mA, T=25ºC
0
-5
-10
dB
dB
0
-5
-10
-15
-20
-25
0
1
2
3
4
5
6
7
8
-15
-20
-25
Frequency GHz
0
1
2
3
4
5
6
7
8
Frequency GHz
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
3
http://www.sirenza.com
EDS-101106 Rev OBS
Preliminary
OBSOLETE
NGA-686 DC-6.0 GHz 5.9V GaAs HBT
Basic Application Circuit
R
BIAS
1 uF
1000
pF
Application Circuit Element Values
Reference
Designator
Frequency (Mhz)
500
850
1950
2400
3500
V
S
C
D
L
C
C
B
C
D
L
C
220 pF
100 pF
68 nH
100 pF
68 pF
33 nH
68 pF
22 pF
22 nH
56 pF
22 pF
18 nH
39 pF
15 pF
15 nH
RF in
C
B
1
4
NGA-686
3
C
B
RF out
2
R ecommended B ias R esistor Values for I
D
=80mA
R
BIAS
=( V
S
-V
D
) / I
D
Supply Voltage(V
S
)
8V
27
9V
39
10 V
51
12 V
75
V
S
R
BIAS
R
BIAS
1 uF
1000 pF
Note: R
BIAS
provi des D C bi as stabi li ty over temperature.
L
C
C
D
C
B
Mounting Instructions
1. Use a large ground pad area under device pins 2
and 4 with many plated through-holes as shown.
2. We recommend 1 or 2 ounce copper. Measurements
for this data sheet were made on a 31 mil thick FR-4
board with 1 ounce copper on both sides.
N6
C
B
Part Identification Marking
The part will be marked with an N6 designator on
the top surface of the package.
3
Pin #
1
Function
RF IN
D escription
RF i nput pi n. Thi s pi n requi res the use
of an external D C blocki ng capaci tor
chosen for the frequency of operati on.
C onnecti on to ground. Use vi a holes
for best performance to reduce lead
i nductance as close to ground leads as
possi ble.
2, 4
GND
4
N6
1
2
3
RF OUT/ RF output and bi as pi n. D C voltage i s
BIAS
present on thi s pi n, therefore a D C
blocki ng capaci tor i s necessary for
proper operati on.
Caution: ESD sensitive
Part Number Ordering Information
Part N umber
NGA-686
R eel Siz e
7"
D ev ices/R eel
1000
Appropriate precautions in handling, packaging and
Definition of interactive projection system:
Interactive projection systems, also known as multimedia interactive projection, are available in floor, wall, and tabletop interactive projection....[详细]
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