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MAX2395ETI+

P1-P3P4-P6P7-P9P10-P12P13-P13
MAX2395
WCDMA Quasi-Direct Modulator
with VGA and PA Driver
10 ______________________________________________________________________________________
BIT NAME POWER-UP STATE BIT LOCATION (0 = LSB) FUNCTION
RFR8 to RFR0 001010000 8 to 0 Reference-divider register bits
LD1, LD0 0 0 10, 9
0 0 = Normal operation (lock-detect output at LD pin)
0 1 = RFM-DIV output
1 0 = RFR-DIV output
1 1 = Low logic output
RCPT2, RCPT1,
RCPT0
0 0 0 13, 12, 11
RF CP test bits:
0 0 0 = Normal mode
0 0 1 = Source sink ON
0 1 1 = Sink ON
1 0 1 = Source ON
1 1 0 = Source, sink OFF
RESERVED 1 14 Program to 1 for normal operation
RESERVED 0 15 Program to 0 for normal operation
Table 4. Reference-Divider (RFR) Register
SHDN PIN (9)
SHDN BIT (0)
IDLE PIN (8)
IDLE_PRG BIT (1)
POWER-DOWN
MODES
COMMENTS
SERIAL BUS
I/Q MOD, RF UC, PA
DRIVER
RF VCO
RF PLL
GmC
0
XXX
OFF
1
0XX
SHDN mode
All OFF except serial bus and registers
(which retain values). A zero on the SHDN
pin overrides the SHDN bit.
ON
OFF OFF OFF OFF
1
100
ON OFF
XX
OFF
1
101
IDLE mode
All OFF except RF PLL, RF VCO, serial
bus, and registers (which retain values).
RF PLL and RF VCO are on or off
depending on the control-bit values
before toggling the IDLE pin to zero.
ON OFF
XXX
1
11X
Power-up mode
The 5 different TX blocks can be toggled
ON/OFF using the serial bus.
ON
XXXX
Table 5. Power-Down Modes
MAX2395
WCDMA Quasi-Direct Modulator
with VGA and PA Driver
______________________________________________________________________________________ 11
It is recommended that the exposed pad be soldered
to a ground plane on the PCB, either directly or through
an array of plated via holes. Soldering the pad to
ground is critical for proper heat dissipation. Use a
solid ground plane wherever possible. Any cutout in the
ground plane may act as a slot radiator and reduce its
shield effectiveness.
SDATA
SCLK
BIT 4BIT 14 BIT 15 A0A1BIT 5
t
CWH
t
CWL
t
CH
t
CS
t
ES
CS
Figure 1. 3-Wire SPI/MICROWIRE Serial-Interface Timing Diagram
Figure 2. Register Assignments
MSB
20-BIT REGISTER
LSB
DATA 16 BITS ADDRESS 4 BITS
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 A3 A2 A1 A0
RFM DIVIDE RATIO REGISTER (16 BITS) ADDRESS
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 0
010
RFR DIVIDE RATIO REGISTER (9 BITS) ADDRESS
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 0 0 0
OPERATION CONTROL REGISTER (16 BITS) ADDRESS
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 0 1 0 0
0
MAX2395
WCDMA Quasi-Direct Modulator
with VGA and PA Driver
12 ______________________________________________________________________________________
SERIAL
BUS
LO
GEN
RF
INTEGER-N
PLL
28 27 26 25 24 23 22
8 9 10 11 12 13 14
15
16
17
18
19
20
21
7
6
5
4
3
2
1
POUT
POWER
AMPLIFIER
V
CC
_PA
N.C.
BIAS_SET
VGC
V
CC
_IF
V
CC
_BB
SCLK
SDATA
CS
N.C.
N.C.
BVP
VTUNE
100pF
TCXO
19.2MHz
GND_VCO
V
CC
_VCO
RFCP
V
CC
_CP
V
CC
V
CC
V
CC
_PLL
REF
LD
N.C.
Q-
Q+
I-
I+
SHDN
IDLE
90°
0°
100pF
W
CDMA M
ODEM
MAX2395
Typical Operating Circuit
Package Information
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages
.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
28 QFN-EP G2855-2
21-0091
28 TQFN-EP T2855-3
21-0140
P1-P3P4-P6P7-P9P10-P12P13-P13

MAX2395ETI+

Mfr. #:
Buy MAX2395ETI+
Manufacturer:
Maxim Integrated
Description:
Modulator / Demodulator WCDMA Quasi-Direct Modulator w/VGA
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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