MAX2316EEI+ Maxim Integrated, MAX2316EEI+ Datasheet - Page 8

• Manufacturer Part Number: MAX2316EEI+
• Description: Modulator / Demodulator
• Manufacturer: Maxim Integrated

Specifications of MAX2316EEI+

• Rohs: yes

The MAX2310 is intended for dual-band (PCS and cel-
lular) and dual-mode code division multiple access
(CDMA) and FM applications (Figure 1). The device
includes an IF variable-gain amplifier, quadrature
demodulator, dual VCOs, and dual-frequency synthe-
sizers (Figure 7). Dual VCOs are provided for applica-
tions using different IF frequencies for each mode or
band of operation. The analog FM output signal can be
CDMA IF VGAs and I/Q Demodulators
with VCO and Synthesizer
Figure 1. MAX2310 Typical Operating Circuit
8
_______________Detailed Description
_______________________________________________________________________________________
0.033μF
10kΩ
10kΩ
10kΩ
10kΩ
10kΩ
I
V
CC
18pF
18pF
12pF
12pF
3.3nF
1.5pF
5pF
47pF
0.01μF
MAX2310
47pF
68nH
18nH
10kΩ
BYP
CPOUT
GND
TANKL+
TANKL-
TANKH+
TANKH-
MODE
V
GND
REF
SHDN
IOUT+
IOUT-
CC
MAX2310
configured for conversion to the I channel, or it may be
converted in quadrature to both the I and Q channels.
The MAX2310’s operation modes are described in
Table 1. These modes are set by programming the con-
trol register and setting logic levels on control pins. If
MODE is left floating, the internal register controls the
operation. If driven high or low, mode will override cer-
tain register bits, as shown in Table 1.
CDMA+
CDMA-
QOUT+
QOUT-
LOCK
DATA
FM+
VGC
BYP
BYP
FM-
CLK
V
EN
CC
V
CC
0.01μF
0.01μF
0.1μF
10kΩ
680Ω
47kΩ
3-WIRE
47pF
V
CC
V
FM
CDMA
CC
DAC
Q