RF2948B データシートの表示（PDF） - RF Micro Devices
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RF2948B Datasheet PDF : 18 Pages
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RF2948B
Parameter
Specification
Unit
Min.
Typ.
Max.
Condition
Transmit Modulator and
LPF
Filter Gain
Baseband Filter 3dB Bandwidth
1
Passband Ripple
Group Delay
Group Delay
Ultimate Rejection
Input Impedance
3
Input AC Voltage
Input P1dB
200
Input DC Offset Requirement
1.6
IF Frequency Range
45
Differential Output Resistance
Differential Output Capacitance
Shunt Output Capacitance
I/Q Phase Balance
I/Q Gain Balance
Conversion Transconductance
Carrier Output
-18
Harmonic Outputs
Transmit VGA and
Upconverter
VGA Gain Range
VGA Control Voltage Range
VGA Gain Sensitivity
VGA Input Impedance
RF Mixer Output Impedance
VGA/Mixer Conversion Gain
VGA/Mixer Output Power
FOR VGA/Mixer Output Power
NOT
0
dB
Any setting
35
MHz
5th order Bessel LPF, Set by BW CTRL
0.1
dB
15
ns
At 35MHz, increasing as bandwidth
decreases.
400
ns
At 2MHz.
> 80
dB
100
1.7
22
0.436
0.4
0
0
0.0185
-26
kΩ
Single-ended
mVp-p Linear, Single-ended.
mVp-p Single-ended.
S 1.8
V
For correct operation.
500
MHz
N kΩ
Between output pins. Open collector when
TX on, Hi Z when TX off
G pF
Between output pins.
pF
From each pin to ground.
I ±3
±1
dB
SS
Single-ended voltage input to differential out-
put current conversion gain.
EdBc
Without external offset adjustments.
374MHz. Compared to modulated signal,
D 100mVP-P input.
-30
W 17
1.0 to 2.0
E17
N515-j994
50
dBc
dB
V
dB/V
Ω
Ω
Positive Slope
374 MHz
With matching elements.
-3 to +14
dB
With 50Ω match on the output.
-9
dBm
1dB compression - Single Sideband,
TX GC=1.0V. (Desired signal power)
-4
dBm
1dB compression - Single Sideband,
TX GC=2.0V. (Desired signal power)
Rev A6 040930
11-241
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