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参数资料
| 型号： | MAX2308ETI+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 10/20页 |
| 文件大小： | 0K |
| 描述： | IC VGA DEMODULATOR 28TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 解调器 |
| RF 频率： | 70MHz ~ 300MHz |
| P1dB： | -9dBm |
| 噪音数据： | 6.36dB |
| 电流 - 电源： | 41.5mA |
| 电源电压： | 2.7 V |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
CDMA IF VGAs and I/Q Demodulators
with VCO and Synthesizer
Table 1. MAX2306 Control Register States
M
M
L
OPERATIONAL
MODE
ACTION
RESULT
PINS
S
B
CONTROL S REGISTER
B
S
B
SHUTDOWN
SHUTDOWN
Shutdown pin completely
powers down the chip
0 in shutdown register bit leaves
serial port active
L
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
STANDBY
0 in standby register bit turns off
VGA and modulator only
H
X
X
X
0
X
X
0
1
CDMA
CDMA
FM_IQ
FM_IQ
FM_I
FM_I
Mode pin overrides VCO_SEL,
DIVSEL, and IN_SEL to high
Floating mode pin returns control
to register
Mode pin overrides VCO_SEL,
DIVSEL, and IN_SEL to low
Floating mode pin returns control
to register
Mode pin overrides VCO_SEL,
DIVSEL, and IN_SEL to low
Floating pins return control to
register
H
H
H
H
H
H
L
H
F
L
F
L
F
0
0
0
0
0
0
X
1
X
X
X
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
1
1
X
1
X
0
X
0
1
1
1
1
1
1
1
1
1
1
1
1
Note: H = high, L = low, F = floating pin, X = don’t care, Blank = independent parameter, 1 = logic high, 0 = logic low.
The appropriate latch outputs provide I and Q signals
at the desired LO frequency.
Synthesizer
The VCO’s output frequency is controlled by an internal
phase-locked-loop (PLL) dual-modulus synthesizer. The
loop filter is off-chip to simplify loop design for emerg-
ing applications. The tunable resonant network is also
off-chip for maximum Q and for system design flexibili-
ty. The VCO output frequency is divided down to the
desired comparison frequency with the M counter. The
M counter consists of a 4-bit A swallow counter and a
10-bit P counter. A reference signal is provided from an
external source and is divided down to the comparison
frequency with the R counter. The two divided signals
are compared with a three-state digital phase-frequen-
cy detector. The phase-detector output drives a
charge-pump as well as lock-detect logic and tur-
bocharge control logic. The charge-pump output
(CP_OUT) pin is processed by the loop filter and drives
the tunable resonant network, altering the VCO frequen-
cy and closing the loop.
Multimode applications are supported by two indepen-
dent programmable registers each for the M counter
(M1, M2), the R counter (R1, R2), and the charge-pump
output current magnitude (CP1, CP2). The DIVSEL (DS)
bit selects which set of registers is used. It can be over-
ridden by the MAX2306’s MODE pin or the MAX2309’s
DIVSEL pin. Programming these registers is discussed
in the 3-Wire Interface and Registers section.
10
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相关代理商/技术参数 |
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| MAX2308EVKIT | 功能描述:射频开发工具 MAX2306/8/9 Eval Kit RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| MAX2309EGI | 功能描述:调节器/解调器 RoHS:否 制造商:Texas Instruments 封装 / 箱体:PVQFN-N24 封装:Reel |
| MAX2309EGI-B50070 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX2309EGI-T | 功能描述:调节器/解调器 RoHS:否 制造商:Texas Instruments 封装 / 箱体:PVQFN-N24 封装:Reel |
| MAX2309ETI+ | 功能描述:调节器/解调器 CDMA If VGAs & I/Q Demodulator w/VCO RoHS:否 制造商:Texas Instruments 封装 / 箱体:PVQFN-N24 封装:Reel |
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