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PDF PMB2313T Data sheet ( Hoja de datos )
| Número de pieza | PMB2313T | |
| Descripción | Prescaler Circuit 1.1 GHz | |
| Fabricantes | Infineon Technologies AG | |
| Logotipo |  |
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Data Sheet, Version 1.2, December 2003
Prescaler Circuit 1.1 GHz
PMB 2313T
Version 1.5
Wireless Infrastructure
Never stop thinking.
1 page  
PMB 2313T
Version 1.5
Overview
1 Overview – Prescaler Circuit 1.1 GHz
1.1 Functional Description/ Application
This IC is designed for use in mobile radio communication devices up to 1100 MHz.
Due to low power consumption and low phase noise generation, the PMB2313T is suitable for use in battery
powered handheld systems, e.g. GSM, cordless telephones and cordless consumer products, as well as in
basestations.
Low supply voltage down to 2.7V. It can be switched to a low-power standby mode. Internal current source at the
emitter follower output.
No external resistor needed in typical applications.
The divide ratio is 1:64/65 or 1:128/129 depending on the external circuit configuration.
The IC is board level compatible to the PMB 2312 prescaler.
1.2 Circuit Description
The differential inputs of the IC may be connected either balanced or single ended. In the latter case the unused
input must be RF-grounded with a capacitor (about 1.5 nF) with a low serial inductance.
Depending on the logic level at SW input the basic divide ratio of the ECL-stages is fixed to 1:64/65 or 1:128/129.
The MOD input determines whether modulus 1:n or 1:n+1 (n=64 or 128 according to SW-level) is active.
The IC can be switched to a low-power standby mode (input STB).
The MOD input is TTL/CMOS compatible.
The emitter follower output is CMOS compatible according to the application circuit on page 11. The minimum logic
swing is 0.8 Vpp.
Table 1 Function Table
Input pin
SW
MOD
STB
Logic level
HIGH = US-0.1 V to US
LOW = GND to 0.8 V or open
HIGH = 2.0 V to US or open
LOW = GND to 0.8 V
HIGH = US-0.1 V to US
LOW = GND to 0.8 V
Prescaler function
1:64/65
1:128/129
1:64/1:128
1:65/1:129
Divider
Q=HIGH, STANDBY-mode
Data Sheet
5 Version 1.2, 2003-12-01
5 Page 
8 Application Circuit
PMB 2313T
Version 1.5
Application Circuit
GND
5
MOD
6
STB
7
I2 8
1nF
PMB
2313
4Q
SW
3
2 US
1 I1
1n
F
ca. 1nF
US
MOD
CMOS-PLL
PMB 2304
PD
LF
(SW connected for 1:64/65 divider ratio)
VCO
Data Sheet
11 Version 1.2, 2003-12-01
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet PMB2313T.PDF ] | |
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