- 您现在的位置：买卖IC网 > PDF目录18818 > MAX2309ETI+T (Maxim Integrated)IC CDMA IF VGA/IQ DEMOD 28-TQFN PDF资料下载
参数资料
| 型号： | MAX2309ETI+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 11/20页 |
| 文件大小： | 0K |
| 描述： | IC CDMA IF VGA/IQ DEMOD 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | IF VGA，I/Q 解调器 |
| 频率： | 70MHz ~ 300MHz |
| RF 型： | CDMA，W-CDMA，WLL |
| 次要属性： | VGA 带 >110dB 增益控制 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
CDMA IF VGAs and I/Q Demodulators
with VCO and Synthesizer
Table 2. MAX2308 Control Register States
OPERATIONAL
MODE
ACTION
RESULT
P
I
N
M
S
B
M
CONTROL S REGISTER
B
L
S
B
SHUTDOWN
SHUTDOWN
Shutdown pin completely shuts down
chip
0 in shutdown register bit leaves seri-
al 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
L
STANDBY
0 in standby pin turns off VGA and
modulator only
H
0
0
X
X
0
1
CDMA
FM_IQ
FM_I
CDMA operation
FM IQ quadrature operation
FM I operation
H
H
H
0
0
0
0
0
0
X
X
X
X
X
X
X
0
1
1
0
0
1
1
1
1
1
1
Note: H = high, L = low, 1 = logic high, 0 = logic low, X = don’t care, blank = independent parameter
When the part initially powers up or changes state, the
synthesizer acquisition time can be reduced by using
the Turbo feature, enabled by the TURBOCHARGE
(TC) control bit. Turbo functionality provides a larger
charge-pump current during acquisition mode. Once
the VCO frequency is acquired, the charge-pump out-
put current magnitude automatically returns to the pre-
programmed state to maintain loop stability and
minimize spurs in the VCO output signal.
The lock detect output indicates when the PLL is
locked with a logic high.
3-Wire Interface and Registers
The MAX2306 family incorporates a 3-wire interface for
synthesizer programming and device configuration
(Figure 5). The 3-wire interface consists of clock, data,
and enable signals. It controls the VCO dividers (M1
and M2), reference frequency dividers (R1 and R2),
and a 13-bit control register. The control register is
used to set up the operational modes (Table 4). The
input shift is 17 data bits long and requires a total of 18
clock bits (Figure 6). A single clock pulse is required
before enable drops low to initialize the data bus.
Whenever the M or R divide register value is pro-
grammed and downloaded, the control register must
also be subsequently updated. This prevents turbolock
from going active when not desired.
The SHDN control bit is notable because it differs from
the SHDN pin. When the SHDN control bit is low, the
registers and serial interface are left active, retaining
the values stored in the latches, while the rest of the
device is shut off. In contrast, the SHDN pin, when low,
shuts down everything, including the registers and seri-
al interface. See Functional Diagram .
Registers
Figure 7 shows the programming logic. The 17-bit shift
register is programmed by clocking in data at the rising
edge of CLK. Before the shift register is able to accept
data, it must be initialized by driving it with at least one
full clock cycle at the CLK input with EN high (see
Figure 6). Pulling enable low will allow data to be
clocked into the shift register; pulling enable high loads
the register addressed by A0, A1, and A2, respectively
(Figure 7). Table 5 lists the power-on default values of
all registers. Table 6 lists the charge-pump current,
depending on CP0 and CP1.
______________________________________________________________________________________
11
相关PDF资料 |
PDF描述 |
|---|---|
| B-36-5 | CORD PATCH BANANA PLUG 36" GREEN |
| MAX2309ETI+ | IC CDMA IF VGA/IQ DEMOD 28-TQFN |
| B-24-2 | PATCH CORD STKG BANA PLG 24" RED |
| B-36-0 | PATCH CORD STKG BANA PLG 36" BLK |
| AH182-WG-7 | IC HALL SENSOR LP 10MA SC-59 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX2309EVKIT | 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 |
| MAX2309EVKIT# | 功能描述:射频开发工具 MAX2309 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 |
| MAX230C/D | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX230CPP | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX230CPP+ | 功能描述:RS-232接口集成电路 5V MultiCh RS-232 Driver/Receiver RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
发布紧急采购，3分钟左右您将得到回复。