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参数资料
| 型号： | MAX2314 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Quad 2-input positive-NAND buffers with open collector outputs 14-SOIC 0 to 70 |
| 中文描述： | CDMA IF VGA及I/Q解调器，带有VCO及合成器 |
| 文件页数： | 7/22页 |
| 文件大小： | 342K |
| 代理商： | MAX2314 |
M
CDMA IF VGAs and I/Q Demodulators
with VCO and Synthesizer
_______________________________________________________________________________________
7
Pin Description (continued)
27, 28
27, 28
Bypass Node. Must be capacitively decoupled (bypassed) to
analog V
CC
.
BYP
27, 28
27, 28
23, 24
23, 24
Differential CDMA Input. Active in CDMA mode.
CDMA-,
CDMA+
23, 24
23, 24
25
—
Differential Positive Input. Active in FM mode.
FM+
25
—
22
22
VGA Gain Control Input. Control voltage range is 0.5V to 2.3V.
VGC
22
22
20
20
Data input of the 3-wire serial bus.
DATA
V
CC
20
20
19
19
Enable Input. When low, input shift register is enabled.
EN
19
19
18
18
Clock input of the 3-wire serial bus
CLK
18
18
16, 17
16, 17
Differential Quadrature-Phase Baseband Output. Disabled if
FM_I mode is selected.
QOUT-,
QOUT+
16, 17
16, 17
15
15
Lock Output—open-collector pin. Logic high indicates phase-
locked condition.
LOCK
15
15
13, 14
13, 14
Differential In-Phase Baseband Output, or FM signal output
FM_I mode is selected.
IOUT+,
IOUT-
13, 14
13, 14
12
12
Shutdown Input—active low. Low powers down entire device,
including registers and serial interface.
SHDN
12
12
11
11
Reference Frequency Input
REF
11
11
—
8
Internal VCO Output. Depending on setting of BD bit, LOOUT
is either the VCO frequency (twice the IF frequency) or one-
half the VCO frequency (equal to the IF frequency).
LOOUT
—
8
6, 7
5, 6
Differential Tank Input for High-Frequency Oscillator
TANKH+,
TANKH-
—
—
NAME
FUNCTION
PIN
MAX2310
MAX2312
MAX2314
MAX2316
—
—
7
—
LO Buffer Amplifier—active low
No Connection. Must be left open-circuit.
BUFEN
N.C.
—
6, 7
7
—
8
—
Mode Select. High selects CDMA mode; low selects FM
mode.
MODE
—
—
10
10
Digital Ground
GND
10
10
9
9
+2.7V to +5.5V Supply for Digital Circuits
V
CC
9
9
21
21
2.7V to 5.5V Supply for Analog Circuits
21
21
26
—
Differential Negative Input for FM signal. Bypass to GND for
single-ended operation.
FM-
26
—
—
26
Standby Input—active low. Low powers down VGA and demod-
ulator while keeping VCO, PLL, and serial bus on.
STBY
—
26
—
25
No Connection.
N.C.
—
25
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