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参数资料
| 型号： | ADRF6801ACPZ-R7 |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | 调制器/解调器 |
| 英文描述： | 750 MHz - 1150 MHz RF/MICROWAVE I/Q DEMODULATOR |
| 封装： | 6 X 6 MM, ROHS COMPLIANT, MO-220VJJD-2, CP-40-1, LFSCP_VQ, 40 PIN |
| 文件页数： | 9/36页 |
| 文件大小： | 1034K |
| 代理商： | ADRF6801ACPZ-R7 |
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ADRF6801
Rev. 0 | Page 17 of 36
Register 4—Charge Pump, PFD, and Reference Path
Control
With R4[2:0] set to 100, the on-chip charge pump, PFD, and
reference path control register is programmed as shown in
The charge pump current is controlled by the base charge
pump current (ICP, BASE) and the value of the charge pump
current multiplier (ICP, MULT).
The base charge pump current can be set using an internal or
external resistor (according to Bit DB18 of Register 4). When
using an external resistor, the value of ICP,BASE can be varied
according to
[]
8
.
37
250
4
.
217
Ω
,
×
=
BASE
CP
SET
I
R
The actual charge pump current can be programmed to be a
multiple (1, 2, 3, or 4) of the charge pump base current. The
multiplying value (ICP, MULT) is equal to 1 plus the value of the
DB11 and DB10 bits in Register 4.
The PFD phase offset multiplier (θPFD, OFS), which is set by Bit
DB16 to Bit DB12 of Register 4, causes the PLL to lock with a
nominally fixed phase offset between the PFD reference signal
and the divided-down VCO signal. This phase offset is used to
linearize the PFD-CP transfer function and can improve
fractional spurs. The magnitude of the phase offset is
determined by
MULT
CP
OFS
PFD
I
,
5
.
22
[deg]
ΔΦ
θ
=
Finally, the phase offset can be either positive or negative
depending on the value of the DB17 bit in Register 4.
The reference frequency applied to the PFD can be manipulated
using the internal reference path source. The external reference
frequency applied can be internally scaled in frequency by 2×,
1×, 0.5×, or 0.25×. This allows a broader range of reference
frequency selections while keeping the reference frequency
applied to the PFD within an acceptable range.
The ADRF6801 also provides a MUXOUT pin that can be
programmed to output a selection of several internal signals. The
default mode provides a lock-detect output that allows users to
verify when the PLL has locked to the target frequency. In addition,
several other internal signals can be routed to the MUXOUT pin as
described in Figure 37.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADRF6801-EVALZ | 功能描述:EVAL BOARD FOR ADRF6801 制造商:analog devices inc. 系列:- 零件状态:有效 类型:解调器 频率:750MHz ~ 1.15GHz 配套使用产品/相关产品:ADRF6801 所含物品:板 标准包装:1 |
| ADRF6806ACPZ-R7 | 功能描述:IC QUADRATURE DEMOD 40LFCSP RoHS:是 类别:RF/IF 和 RFID >> RF 解调器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:解调器 LO 频率:- RF 频率:70MHz ~ 300MHz P1dB:-9dBm 增益:- 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) |
| ADRF6806-EVALZ | 制造商:Analog Devices 功能描述:EVALUATION BOARD - Boxed Product (Development Kits) 制造商:Analog Devices 功能描述:EVAL 525MHZ QUAD DEMOD ADRF6806 制造商:Analog Devices 功能描述:ADRF6806, QUAD DEMOD, EVAL BOARD; Silicon Manufacturer:Analog Devices; Features:IQ Demodulator with Integrated Fractional-N PLL, Integrated PLL & VCO; SVHC:No SVHC (19-Dec-2012) ;RoHS Compliant: Yes 制造商:Analog Devices 功能描述:MODULATOR/DEMODULATOR |
| ADRF6807 | 制造商:AD 制造商全称:Analog Devices 功能描述:700 MHz to 1050 MHz Quadrature |
| ADRF6807ACPZ-R7 | 功能描述:IC QUADRATURE DEMOD 40LFCSP RoHS:是 类别:RF/IF 和 RFID >> RF 解调器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:解调器 LO 频率:- RF 频率:70MHz ~ 300MHz P1dB:-9dBm 增益:- 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) |
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