MAX2314EEI(2003) Ver la hoja de datos (PDF) - Maxim Integrated

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MAX2314EEI
(Rev.:2003)

CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer

Maxim Integrated 

CDMA IF VGAs and I/Q Demodulators

with VCO and Synthesizer

Typical Operating Characteristics (continued)

(MAX2310/MAX2314 or MAX2312/MAX2316 EV kit, VCC = +2.75V, registers set to default power-up states, fIN = 210.88MHz for

CDMA, fIN = 85.88MHz for FM, fREF = 19.68MHz, synthesizer locked with passive 2nd-order lead-lag loop filter, SHDN = high, VGC

set for +35dB voltage gain, differential output load = 10kΩ, all power levels referred to 50Ω, TA = +25°C, unless otherwise noted.)

FM PORT

S11 vs. FREQUENCY

TANKL PORT

1/S11 vs. FREQUENCY

TANKH PORT

1/S11 vs. FREQUENCY

1

2

4

3

1: 641 - j428 10MHz

2: 27 - j162 85MHz

3: 4 - j73 210MHz

4: 1.8 - j39 600MHz

LOOUT PORT

S22 vs. FREQUENCY

4

4

3

3

2

2

1

1

1: -3.06ms + j349µs, 100MHz

2: -3.01ms + j853µs, 160MHz

3: -3.11ms + j1.45ms, 240MHz

4: -3.04ms + j1.85ms, 300MHz

CDMA PORT

S11 vs. FREQUENCY

1: 1.98ms + j437µs, 100MHz

2: 2.18ms + j853µs, 160MHz

3: 2.11ms +j 2.53ms, 420MHz

4: 2.17ms +j 3.71ms, 600MHz

1: 108.63Ω (Re)

10.266Ω (1m)

40MHz

2: 134.99Ω (Re)

13.71Ω (1m)

150MHz

3: 158.83Ω (Re)

39.58Ω (1m)

300MHz

PIN

MAX2310 MAX2312 MAX2314 MAX2316

NAME

1

1

1, 8

1

BYP

2

2

2

2

CP_OUT

3

3

3

3

GND

4, 5

—

4, 5

5, 6

TANKL+,

TANKL-

—

4

—

4

DIVSEL

1

2

3

4

1: 10MHz, 375Ω - j56Ω

2: 85MHz, 285Ω - j200Ω

3: 210MHz, 73Ω - j169Ω

4: 600MHz, 2.1Ω - j34Ω

Pin Description

FUNCTION

Bypass Node. Must be capacitively decoupled (bypassed)

to analog ground.

Charge-Pump Output

Analog Ground Reference

Differential Tank Input for Low-Frequency Oscillator

High selects M1/R1; low selects M2/R2.

6 _______________________________________________________________________________________

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