參數(shù)資料
型號(hào)： OL2300NHN
廠商： NXP SEMICONDUCTORS
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Fractional-N PLL based transmitter
中文描述： SPECIALTY TELECOM CIRCUIT, PQCC16
封裝： 3 X 3 MM, 0.85 MM HEIGHT, LEAD FREE, PLASTIC, MO-220, SOT758-1, VQFN-16
文件頁(yè)數(shù)： 13/46頁(yè)
文件大小： 951K
代理商： OL2300NHN
OL2300
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 28 October 2010
13 of 46
NXP Semiconductors
OL2300
Fractional-N PLL based transmitter
The available output power is a function of the actual VCO frequency, so the higher the
VCO frequency and its supply voltage (V
DD(VCO)
), the higher the output power becomes. A
low VCO frequency selection is desirable for Japan due to the present limitations
regarding radiated output power.
6.4.2
ACON power amplifier amplitude control
The control registers ACON0, ACON1 and ACON2, control the power amplifier driver
stage in all four power modes for either amplitude fine-tuning or ASK modulation means.
The actual output power is set by three 4-bit values in the ASK modulation control
registers ACON0, ACON1 and ACON2. Two different HIGH (AMH) levels and one LOW
(AML) level are configurable.
6.4.3
ASK settings
Amplitude modulation is achieved by switching between one of the high-levels (selected
by control-bit D of the transmit-command) and the low-level in accordance with the control
signal AMOUT, which is derived from the TXData, see
Figure 10
and
Figure 14
.
Table 10.
ASK1
X
X
0
1
ASK0 located in ACON0, and ASK1 located in ACON1 determine ASK or FSK operation.
If TXDATA is low then AMOUT is low and the amplitude is determined by the value of the
transmit command bit ‘D’. If the bit is set, the actual high-level is controlled by the four bits
of AMH1[3:0] located in ACON1. Alternatively AMH0[3:0] from ACON0 would be used if
‘D’ is cleared.
Amplitude control for ASK, FSK
ASK0
0
1
X
X
D
0
0
1
1
Mode
FSK
ASK
FSK
ASK
Amplitude control
ACON0
ACON0
ACON1
ACON1
Fig 10. Power amplifier control
001aak388
AMH0
POWER
AMPLIFIER
ACON[2:0]
4
4
4
4
1
1
1
4
AMH1
ACON
DATA WR
ASK0
ASK1
Bit ''D''
(transmit command)
PAM
CASC
DATA RD
AML
TX data
AMOUT
AND
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