mc13146fta Lansdale Semiconductor, Inc., mc13146fta Datasheet - Page 7

• Manufacturer Part Number: mc13146fta
• Description: Low Power Dc ? 1.8 Ghz Transmitter
• Manufacturer: Lansdale Semiconductor, Inc.

ML13146
Mixer/Buffer Input
drive the IF port of the mixer (see Table 2, S11parameters).
The Mixer/Buf In pin can be used in one of three modes:
Page 7 of 15
The Mixer/Buf In pin is a broadband, 50 Ω input used to
1. A IF signal can be applied to this pin and up–converted
2. A resistor can be connected to ground, controlling the
3. A resistor can be connected to V CC , disabling the entire
mixer.
to the desired RF frequency.
RF output power.
www.lansdale.com
The linear gain of the Mixer/Buf when used as a buffer is
approximately –5.0 to –8.0 dB.
Mixer/Buffer Outputs
are balanced, open collector. A shunt resistor of 200 Ω mini-
mum to V CC is recommended for stability.
nected in a balanced–to–unbalanced configuration. If the sin-
gle–ended driver configuration is used, the unused output must
be tied directly to V CC . For the balanced–to–unbalanced con-
figuration, an additional 3.0 to 6.0 dB of power gain can be
achieved. Conjugate matching is easily accomplished to the
desired load by the addition of a shunt and series element (see
Table 2, S22 parameters).
Low Power Amplifier (LPA)
mately 2.0 mA emitter current) for optimal low power opera-
tion, yielding a 10 dBm 1.0 dB output power compression
point. Input and output matching may be achieved at various
frequencies using few external components (see Table 3
S–parameters). Typical power gain is 16 dB with the input/out-
put conjugately matched to the source/load impedance. A mini-
mum 200 Ω shunt resistor from the output to V CC is recom-
mended for stability.
The mixer outputs (Mixer/Buf Out + and Mixer/Buf Out –)
The outputs can be used as a single–ended driver or con-
The LPA is internally biased at low supply current (approxi-
LANSDALE Semiconductor, Inc.
Issue 0