OKI KGF1254

This version: Jul. 1998
Previous version: Jan. 1998
E2Q0023-38-71
¡ electronic components
KGF1254B/1254
¡ electronic components
KGF1254B/1254
Medium-Power Amplifier
GENERAL DESCRIPTION
The KGF1254B 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
KGF1254B specifications are guaranteed to a fixed matching circuit for 5.2 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 KGF1254B is ideal as a transmitter-driver
amplifier for personal handy phones.
The KGF1254 is an amplifier similar to the KGF1254B in specifications and typical properties.
Although having S Parameters that are slightly different from those of the KGF1254B, the
KGF1254 meets the specifications for the KGF1254B, even with the same matching circuits as
those of the KGF1254B.
FEATURES
• High output power: 20 dBm (min.)
• Low noise: 2.5 dB (max.)
• Low current operation: 80 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 KGF1254.
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KGF1254B/1254
MARKING
(4)
(3)
D X X
(1)
(2)
NUMERICAL
ALPHABETICAL
LOT
NUMBER
PRODUCT TYPE
(1) Gate
(2) Source
(3) Drain
(4) GND
CIRCUIT
Drain(3)
Gate(1)
Source(2)
GND(4)
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KGF1254B/1254
ABSOLUTE MAXIMUM RATINGS
Symbol
Condition
Unit
Min.
Max.
Drain-Source voltage
Item
VDS
Ta = 25°C
V
—
10
Gate-Source voltage
VGS
Ta = 25°C
V
–5.0
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 = –15 V
mA
—
—
360
mA
—
—
720
IDSS
VDS = 3 V, VGS = 0 V
mA
130
—
—
ID
(*1), PIN = 10 dBm,
f = 850 MHz
mA
—
—
80.0
VGS(off)
VDS = 3 V, IDS = 720 mA
V
–2.0
—
–1.0
gm
VDS = 3 V, IDS = 60 mA
mS
125
—
—
(*1), f = 850 MHz
dB
F
GLIN
(*2), PIN =
–10 dBm
(*1), PIN =
10 dBm
Output power
Min.
mA
VDS = 3 V, VGS = –2.5 V
IGDO
IDS(off)
(*1), PIN =
–10 dBm
Linear gain
Unit
—
—
2.5
f = 850 MHz
14.0
17.0
—
f = 1.5 GHz
—
13.5
—
f = 1.9 GHz
—
11.0
—
—
17.0
—
f = 1.5 GHz
—
13.0
—
f = 1.9 GHz
—
10.0
—
f = 850 MHz
20.0
22.0
—
f = 1.5 GHz
—
20.0
—
—
18.0
—
—
20.0
—
f = 1.5 GHz
—
16.0
—
f = 1.9 GHz
—
15.0
—
f = 850 MHz
f = 1.9 GHz
PO
(*2), PIN =
10 dBm
dB
f = 850 MHz
dBm
*1 Self-bias condition: VDD = 5.2 V, VG = 0 V
*2 Self-bias condition: VDD = 3 V, VG = 0 V
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KGF1254B/1254
RF CHARACTERISTICS
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KGF1254B/1254
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KGF1254B/1254
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KGF1254B/1254
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KGF1254B/1254
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KGF1254B/1254
Typical S Parameters of KGF1254B
VDD = 3 V, VG = 0 V, ID = 43.8 mA
Freq(MHz) MAG(S11) ANG(S11) MAG(S21) ANG(S21) MAG(S12) ANG(S12) MAG(S22) ANG(S22)
500.0
0.882
–54.29
6.342
129.65
0.044
59.98
0.291
–91.01
600.0
0.858
–61.91
5.839
124.19
0.050
57.96
0.299
–102.52
700.0
0.828
–70.32
5.529
117.60
0.050
59.06
0.296
–112.71
800.0
0.797
–77.65
5.244
110.96
0.055
63.86
0.289
–119.30
900.0
0.770
–84.78
4.984
104.10
0.058
63.60
0.287
–125.16
1000.0
0.741
–91.04
4.689
97.72
0.062
65.29
0.279
–128.77
1100.0
0.720
–97.10
4.430
91.83
0.068
66.39
0.276
–132.96
1200.0
0.700
–102.38
4.176
86.10
0.076
67.73
0.280
–135.93
1300.0
0.681
–107.86
3.958
80.86
0.084
69.74
0.290
–137.58
1400.0
0.666
–113.07
3.747
75.51
0.093
69.37
0.292
–140.07
1500.0
0.656
–117.36
3.590
70.87
0.099
68.47
0.307
–143.39
1600.0
0.648
–122.06
3.402
65.72
0.108
70.21
0.309
–146.87
1700.0
0.636
–126.25
3.263
61.49
0.119
70.91
0.318
–148.45
1800.0
0.629
–130.79
3.095
57.06
0.128
68.98
0.330
–151.18
1900.0
0.629
–135.10
2.973
52.30
0.138
69.75
0.348
–154.04
2000.0
0.623
–139.85
2.851
48.02
0.152
66.93
0.358
–155.23
2100.0
0.620
–144.21
2.717
43.82
0.166
67.20
0.363
–159.28
2200.0
0.616
–147.51
2.619
39.65
0.178
64.35
0.386
–163.29
2300.0
0.621
–152.56
2.498
35.18
0.192
64.22
0.395
–165.34
2400.0
0.623
–156.23
2.408
31.36
0.205
61.50
0.406
–169.53
2500.0
0.623
–160.44
2.304
27.83
0.218
58.91
0.429
–171.79
2600.0
0.625
–164.40
2.217
23.62
0.230
56.57
0.441
–175.67
2700.0
0.632
–168.81
2.128
19.87
0.243
54.01
0.457
–179.59
2800.0
0.635
–172.79
2.047
16.31
0.256
52.28
0.471
177.80
2900.0
0.638
–177.44
1.965
12.51
0.270
49.71
0.486
173.52
3000.0
0.647
178.65
1.895
8.54
0.283
47.52
0.508
169.33
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KGF1254B/1254
Typical S Parameters of KGF1254B
VDD = 3 V, VG = 0 V, ID = 43.8 mA
Frequency : 0.5 to 3.0 GHz
Z0 = 50 W
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KGF1254B/1254
Typical S Parameters of KGF1254B
VDD = 5 V, VG = 0 V, ID = 45.1 mA
Freq(MHz) MAG(S11) ANG(S11) MAG(S21) ANG(S21) MAG(S12) ANG(S12) MAG(S22) ANG(S22)
500.0
0.885
–52.63
6.302
130.04
0.040
61.92
0.322
–76.26
600.0
0.864
–59.83
5.861
124.38
0.043
59.74
0.321
–86.96
700.0
0.836
–67.93
5.553
117.38
0.045
60.36
0.315
–96.63
800.0
0.812
–75.08
5.277
110.70
0.047
62.83
0.307
–102.22
900.0
0.786
–82.06
5.005
103.96
0.051
62.81
0.300
–107.66
1000.0
0.765
–88.22
4.724
97.24
0.056
68.01
0.299
–111.14
1100.0
0.743
–94.20
4.471
91.06
0.062
71.47
0.298
–114.83
1200.0
0.725
–99.50
4.221
85.19
0.068
73.68
0.303
–119.37
1300.0
0.707
–105.20
3.978
79.95
0.079
76.17
0.311
–122.26
1400.0
0.697
–110.17
3.783
74.02
0.084
76.17
0.326
–125.15
1500.0
0.689
–114.84
3.624
69.53
0.094
75.92
0.334
–128.57
1600.0
0.679
–119.36
3.432
64.21
0.105
79.05
0.341
–132.48
1700.0
0.673
–123.74
3.289
59.89
0.115
77.97
0.353
–135.45
1800.0
0.667
–128.52
3.123
55.16
0.127
76.07
0.367
–138.21
1900.0
0.669
–133.13
2.995
50.31
0.139
76.30
0.388
–142.51
2000.0
0.661
–137.70
2.872
45.87
0.154
73.45
0.403
–144.74
2100.0
0.660
–142.35
2.730
41.41
0.166
74.08
0.408
–149.35
2200.0
0.660
–145.82
2.630
37.21
0.180
69.70
0.427
–153.97
2300.0
0.667
–151.02
2.497
32.36
0.199
68.97
0.444
–157.05
2400.0
0.663
–155.34
2.411
28.42
0.215
67.08
0.459
–161.21
2500.0
0.665
–159.71
2.294
24.90
0.225
63.38
0.479
–164.88
2600.0
0.671
–163.88
2.208
20.26
0.241
60.62
0.493
–168.63
2700.0
0.677
–168.72
2.118
16.64
0.259
57.47
0.510
–173.48
2800.0
0.682
–173.12
2.025
12.64
0.272
55.78
0.523
–177.27
2900.0
0.680
–177.75
1.936
8.81
0.284
52.98
0.542
178.12
3000.0
0.688
178.08
1.854
4.75
0.301
50.65
0.557
173.21
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KGF1254B/1254
Typical S Parameters of KGF1254B
VDD = 5 V, VG = 0 V, ID = 45.1 mA
Frequency : 0.5 to 3.0 GHz
Z0 = 50 W
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Test Circuit and Bias Configuration for KGF1254B at 850 MHz
CF
CS
VDD
RFC
RG
T1
T2
IN
CC
T3
C1
(2)
(1) KGF
(3)
1254B
(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 KGF1254B at 1.5 GHz
CB
CS
T1
T2
IN
CC
RG
T3
C1
CF
VDD
(2)
(1) KGF
(3)
1254B
(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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KGF1254B/1254
Test Circuit and Bias Configuration for KGF1254B at 1.9 GHz
CB
CS
T1
T2
IN
CC
RG
T3
C1
CF
VDD
(2)
(1) KGF
(3)
1254B
(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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