OKI KGF1256

This version: Jul. 1998
Previous version: Jan. 1998
E2Q0024-38-71
¡ electronic components
KGF1256B/1256
¡ electronic components
KGF1256B/1256
Medium-Power Amplifier
GENERAL DESCRIPTION
The KGF1256B is a medium-power amplifier, with frequencies ranging from the UHF-band to
the L-band, that features high output power, low noise, and low current operation. The
KGF1256B specifications are guaranteed to a fixed matching circuit for 5 V and 850 MHz; external
impedance-matching circuits are also required. Because of the low noise and high output power
at the low operating current, the KGF1256B is ideal as a transmitter-driver amplifier for personal
handy phones.
The KGF1256 is similar to the KGF1256B in specifications and typical properties. Although
having S Parameters that are slightly different from those of the KGF1256B, the KGF1256 meets
the specifications for the KGF1256B, even with the same matching circuits.
FEATURES
• High output power: 15 dBm (min.)
• Low noise: 2.5 dB (max.)
• Low current: 40 mA (max.)
• Self-bias circuit configuration with built-in source capacitor
• Package: 4PSOP
PACKAGE DIMENSIONS
1.8±0.1
0.85±0.05
0.36 0.74
0.3 MIN
1.1±0.15
0.4 +0.1
–0.05
1.5±0.15
3.0±0.2
0.6 +0.1
–0.05
0 to 0.15
Package material
1.9±0.1
Lead frame material
0.125
+0.03
–0
2.8±0.15
Epoxy resin
Pin treatment
42 alloy
Solder plating
Solder plate thickness
5 mm or more
(Unit: mm)
Note: Ask our sales department for detailed requirements of the KGF1256.
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KGF1256B/1256
MARKING
(4)
(3)
D X X
(1)
(2)
ALPHABETICAL
LOT
NUMBER
NUMERICAL
PRODUCT TYPE
(1) Gate
(2) Source
(3) Drain
(4) GND
CIRCUIT
Drain(3)
Gate(1)
Source(2)
GND(4)
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KGF1256B/1256
ABSOLUTE MAXIMUM RATINGS
Symbol
Condition
Unit
Min.
Max.
Drain-source voltage
Item
VDS
Ta = 25°C
V
—
7
Gate-source voltage
VGS
Ta = 25°C
V
–3.0
0.4
Drain current
IDS
Ta = 25°C
mA
—
360
Total power dissipation
Ptot
Ta = 25°C
mW
—
300
Channel temperature
Tch
—
°C
—
150
Storage temperature
Tstg
—
°C
–45
125
ELECTRICAL CHARACTERISTICS
(Ta = 25°C)
Item
Gate-source leakage current
Gate-drain leakage current
Drain-source leakage current
Drain current
Operating current
Gate-source cut-off voltage
Transconductance
Noise figure
Symbol
IGSS
Condition
VGS = –3 V
Typ.
Max.
—
—
72
VGD = –11 V
mA
—
—
360
VDS = 3 V, VGS = –2 V
mA
—
—
720
IDSS
VDS = 3 V, VGS = 0 V
mA
100
—
—
(*1), PIN = 5 dBm,
f = 850 MHz
mA
—
—
40.0
IGDO
ID
VGS(off)
VDS = 3 V, IDS = 720 mA
V
–1.5
—
–0.5
gm
VDS = 3 V, IDS = 25 mA
mS
100
—
—
(*1), f = 850 MHz
dB
F
GLIN
(*2), PIN =
–20 dBm
(*1), PIN =
5 dBm
Output power
Min.
mA
IDS(off)
(*1), PIN =
–20 dBm
Linear gain
Unit
—
—
2.5
f = 850 MHz
14.0
18.0
—
f = 1.5 GHz
—
13.0
—
f = 1.9 GHz
—
10.5
—
—
18.0
—
f = 1.5 GHz
—
12.5
—
f = 1.9 GHz
—
10.0
—
f = 850 MHz
16.0
18.0
—
f = 1.5 GHz
—
15.5
—
—
11.5
—
—
15.0
—
f = 1.5 GHz
—
13.0
—
f = 1.9 GHz
—
10.5
—
f = 850 MHz
f = 1.9 GHz
PO
(*2), PIN =
5 dBm
dB
f = 850 MHz
dBm
*1 Self-bias condition: VDD = 5±0.25 V, VG = 0 V
*2 Self-bias condition: VDD = 3 V, VG = 0 V
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KGF1256B/1256
RF CHARACTERISTICS
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KGF1256B/1256
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KGF1256B/1256
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KGF1256B/1256
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KGF1256B/1256
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KGF1256B/1256
Typical S Parameters of KGF1256B
VDD = 3 V, VG = 0 V, ID = 14.0 mA
Freq(MHz) MAG(S11) ANG(S11) MAG(S21) ANG(S21) MAG(S12) ANG(S12) MAG(S22) ANG(S22)
500.0
0.941
–52.03
5.226
134.33
0.051
42.22
0.531
–76.18
600.0
0.917
–62.43
5.315
126.90
0.052
39.67
0.470
–86.88
700.0
0.874
–71.90
5.111
117.12
0.050
38.92
0.443
–94.46
800.0
0.837
–78.93
4.827
108.84
0.048
43.95
0.426
–99.94
900.0
0.806
–86.02
4.537
101.30
0.051
44.67
0.415
–105.46
1000.0
0.777
–92.27
4.238
94.02
0.052
52.24
0.412
–109.85
1100.0
0.755
–98.15
3.966
87.45
0.052
54.10
0.407
–114.89
1200.0
0.737
–102.90
3.730
81.35
0.057
61.31
0.412
–118.94
1300.0
0.720
–108.50
3.496
75.71
0.061
68.35
0.413
–123.38
1400.0
0.710
–113.18
3.307
70.03
0.066
68.45
0.428
–127.26
1500.0
0.703
–117.55
3.145
65.11
0.077
73.21
0.435
–131.30
1600.0
0.700
–122.22
2.968
59.63
0.082
74.54
0.446
–136.06
1700.0
0.693
–126.28
2.830
55.27
0.093
76.69
0.454
–139.61
1800.0
0.691
–131.15
2.672
51.43
0.104
76.81
0.461
–143.33
1900.0
0.696
–135.24
2.559
45.44
0.115
78.98
0.481
–147.66
2000.0
0.693
–139.61
2.432
40.78
0.131
77.39
0.494
–151.56
2100.0
0.693
–144.32
2.310
36.30
0.146
77.41
0.500
–156.02
2200.0
0.695
–147.69
2.205
32.02
0.159
73.86
0.520
–160.73
2300.0
0.704
–152.62
2.092
27.18
0.174
73.40
0.534
–164.01
2400.0
0.702
–156.91
2.006
23.36
0.194
70.69
0.547
–169.05
2500.0
0.707
–161.26
1.898
19.63
0.210
66.14
0.570
–172.95
2600.0
0.716
–165.51
1.816
15.30
0.223
65.02
0.576
–177.32
2700.0
0.719
–170.07
1.732
11.81
0.243
61.54
0.597
178.74
2800.0
0.719
–174.51
1.646
8.05
0.253
58.95
0.607
174.30
2900.0
0.727
–178.84
1.561
4.42
0.269
56.33
0.614
169.67
3000.0
0.731
177.05
1.492
0.51
0.283
53.45
0.630
165.37
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KGF1256B/1256
Typical S Parameters of KGF1256B
VDD = 3 V, VG = 0 V, ID = 14.0 mA
Frequency : 0.5 to 3.0 GHz
Z0 = 50 W
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KGF1256B/1256
Typical S Parameters of KGF1256B
VDD = 5 V, VG = 0 V, ID = 15.4 mA
Freq(MHz) MAG(S11) ANG(S11) MAG(S21) ANG(S21) MAG(S12) ANG(S12) MAG(S22) ANG(S22)
500.0
0.946
–50.39
5.163
134.98
0.046
41.95
0.531
–72.83
600.0
0.929
–60.59
5.261
127.92
0.044
42.66
0.469
–82.56
700.0
0.888
–69.71
5.067
118.20
0.043
43.75
0.439
–89.70
800.0
0.849
–77.00
4.808
109.79
0.043
47.27
0.426
–94.94
900.0
0.819
–83.83
4.532
102.16
0.045
46.06
0.420
–99.99
1000.0
0.798
–90.00
4.249
94.87
0.044
60.51
0.414
–104.80
1100.0
0.772
–95.94
3.991
88.30
0.045
62.09
0.407
–109.30
1200.0
0.754
–101.07
3.747
81.91
0.052
68.42
0.414
–113.96
1300.0
0.737
–106.32
3.514
76.24
0.057
76.71
0.424
–118.19
1400.0
0.734
–111.29
3.326
70.45
0.066
76.64
0.437
–122.15
1500.0
0.725
–115.68
3.174
65.44
0.074
81.63
0.442
–126.67
1600.0
0.719
–120.16
2.997
59.74
0.082
84.47
0.451
–131.24
1700.0
0.714
–124.65
2.860
55.18
0.096
85.33
0.460
–134.86
1800.0
0.712
–129.15
2.700
50.32
0.106
81.95
0.475
–138.98
1900.0
0.720
–133.48
2.585
45.17
0.117
83.83
0.490
–143.98
2000.0
0.715
–137.90
2.467
40.55
0.136
82.48
0.509
–147.62
2100.0
0.716
–142.76
2.331
35.99
0.151
83.14
0.517
–152.36
2200.0
0.720
–146.59
2.229
31.65
0.165
78.59
0.539
–156.77
2300.0
0.726
–151.65
2.108
26.60
0.184
76.66
0.551
–160.66
2400.0
0.726
–155.82
2.017
22.47
0.202
75.03
0.563
–165.98
2500.0
0.730
–160.35
1.907
19.12
0.218
71.03
0.583
–169.93
2600.0
0.736
–164.80
1.825
14.31
0.237
67.89
0.595
–174.37
2700.0
0.742
–169.18
1.734
10.62
0.252
64.26
0.611
–179.30
2800.0
0.742
–173.83
1.648
7.08
0.267
60.87
0.623
176.68
2900.0
0.746
–178.20
1.566
3.43
0.285
57.36
0.632
171.64
3000.0
0.753
177.40
1.494
–0.62
0.296
55.75
0.648
167.22
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KGF1256B/1256
Typical S Parameters of KGF1256B
VDD = 5 V, VG = 0 V, ID = 15.4 mA
Frequency : 0.5 to 3.0 GHz
Z0 = 50 W
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Test Circuit and Bias Configuration for KGF1256B at 850 MHz
CF
CS
VDD
RFC
RG
T1
T2
IN
CC
T3
C1
(2)
(1) KGF
(3)
1256B
(4)
T4
OUT
CC
T6
T7
C2
T5
C3
C4
T1: Z0 = 75 W, E = 30 deg
T4: Z0 = 75 W, E = 30 deg
T2: Z0 = 75 W, E = 28 deg
T5: Z0 = 75 W, E = 30 deg
T3 = T6: Z0 = 100 W, E = 5 deg
T7: Z0 = 100 W, E = 1 deg
C1 = 7.0 pF, C2 = 0.8 pF, C3 = 5.0 pF, C4 = 5.5 pF, CS = 100 pF
CC(DC Block) = 1000 pF, CF(Feed through) = 1000 pF
RFC = 200 nH, RG = 1000 W
Test Circuit and Bias Configuration for KGF1256B at 1.5 GHz
CB
CS
T1
T2
IN
CC
RG
T3
C1
CF
VDD
(2)
(1) KGF
(3)
1256B
(4)
T8
T4
T5
RFC
OUT
CC
T6
T7
C2
C3
T1: Z0 = 75 W, E = 65 deg
T4: Z0 = 75 W, E = 50 deg
T2: Z0 = 75 W, E = 40 deg
T5: Z0 = 75 W, E = 50 deg
T3 = T6 = T7: Z0 = 100 W, E = 8 deg T8: Z0 = 100 W, E = 1 deg
C1 = 2.4 pF, C2 = 1.2 pF, C3 = 0.6 pF, CS = 100 pF
CC(DC Block) = 1000 pF, CB(By-pass) = 1000 pF, CF(Feed through) = 1000 pF
RFC = 60 nH, RG = 1000 W
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KGF1256B/1256
Test Circuit and Bias Configuration for KGF1256B at 1.9 GHz
CB
CS
T1
T2
IN
CC
RG
T3
C1
CF
VDD
(2)
(1) KGF
(3)
1256B
(4)
T8
T4
T5
RFC
OUT
CC
T6
T7
C2
C3
T1: Z0 = 75 W, E = 65 deg
T4: Z0 = 75 W, E = 50 deg
T2: Z0 = 75 W, E = 40 deg
T5: Z0 = 75 W, E = 50 deg
T3 = T6 = T7: Z0 = 100 W, E = 1 deg T8: Z0 = 100 W, E = 1 deg
C1 = 1.7 pF, C2 = 1.3 pF, C3 = 0.2 pF, CS = 100 pF
CC(DC Block) = 1000 pF, CB(By-pass) = 1000 pF, CF(Feed through) = 1000 pF
RFC = 60 nH, RG = 1000 W
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