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参数资料
| 型号： | PBL40215 |
| 厂商： | ERICSSON |
| 英文描述： | RF Transceiver circuit for the Digital Enhanced Cordless Telecommunications (DECT) system |
| 中文描述： | RF收发器电路的数字增强无线电话（DECT）系统 |
| 文件页数： | 17/22页 |
| 文件大小： | 214K |
| 代理商： | PBL40215 |
17
PBL 402 15
The synthesiser frequency is given by, f
RF
= (f
REF
/ R) (M * N+A)
where:
f
RF
= RF frequency
f
= either 10.368 MHz or 13.824 MHz
R = 6 or 8 (see CNT_R)
M = 32 or 34 (see CNT_M)
N = 32
A = 0, 1, ......,31
PLL Table.
Transmit section.
TX
GATE
Description.
The transmitter consists of a band-pass filter, a gated amplifier and a pre-power amplifier. The band-pass filter cleans the
output signal of the LO modulator prior to amplification.
The gated amplifier is controlled by the GATE pin, with signal polarity determined by the GATE_P flag. The attenuation of the
gating amplifier should be used in addition to the external PA to meet the transmit power ramp requirements. An active GATE
signal causes the output power to ramp up to its required power level. An inactive GATE signal causes the output power to ramp
down to a leakage level. Spectral spreading requirements are best met if the external PA turns on before the power ramp up, and
turn off after the power ramp down. Should the external PA be controlled by the same GATE signal, a delayed copy of the GATE
signal is provided at the PA _GATE output.
The TX output is balanced with an impedance of ~100
and requires external inductors to V
CC
RF. The transmit power may be
trimmed by the TX_P 0-1 bits.
The TX is designed for easy interfacing to the PBL 403 09 DECT PA circuit, which is enabled with an active low signal. See
application diagram for details.
Parameter
Carrier frequency range
Lock time
(1)
Charge pump current
Charge pump leakage
Reference frequency
Condition
0.4
≤
V
T
≤
V
CC
-0.4
Symbol
C
t
LOCK
I
CP
I
LEAK
REF
Min.
1769
Typ.
Max.
1934
320
Unit
MHz
μ
s
μ
A
pA
MHz
400
100
10.368
13.824
tri-state
CNT_R=0
CNT_R=1
Reference input voltage
V
REF
50
mVpk
(1). Depends upon charge pump loop components.
相关PDF资料 |
PDF描述 |
|---|---|
| PBL40305 | Multiband GSM Power Amplifier |
| PBL40307 | GSM Dual Band Tx_VCO |
| PBL40309 | 3.6 V Differential Power Amplifier for DECT Telecommunications system |
| PBL40310 | 3.5 V GSM 900 MHz Power Amplifier |
| PBM39601NS | Microstepping Controller/Dual Digital-to-Analog Converter |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PBL403 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:4.0A BRIDGE RECTIFIER |
| PBL40305 | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:Multiband GSM Power Amplifier |
| PBL40307 | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:GSM Dual Band Tx_VCO |
| PBL40309 | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:3.6 V Differential Power Amplifier for DECT Telecommunications system |
| PBL40310 | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:3.5 V GSM 900 MHz Power Amplifier |
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