SANYO LV2700V Datasheet

Overview

The LV2700V provides the reception and transmission
functions necessary for half-duplex communication in
spread-spectrum communications systems.

Features

• Frequency conversion is not required.
(direct signal processing at 236 MHz)

• Wide spread-spectrum bandwidth (20 MHz)

• Sanyo developed system for PN code synchronization

• Allows direct primary modulation (FSK and FM) by
data and analog signals. (Maximum data rate: 150 kbps)

• Low-voltage operation (2.7 to 5.5 V)

• Low power dissipation (36 mW in RX mode)

Functions

[TX Block]

• Spectrum spreader

• Crystal oscillator circuit

• PN code generator (M sequence)

• M sequence code length (31 or 63 chips) and tap
switching

• 9.83 MHz PLL

• Band limiting filter (LPF) for data transmission
[RX Block]

• Spectrum despreader

• Synchronization supplementation and protection

• 236-MHz PLL

• PN code generator (M sequence)

• M sequence code length (31 or 63 chips) and tap
switching

• FSK (FM) demodulator

• Lock detector

Package Dimensions

Bi-CMOS LSI

Ordering number : EN *5651

63097HA(OT) No. 5651-1/9

Preliminary

SANYO: SSOP30

[LV2700V]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN

Spread Spectrum Communications IC

LV2700V

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

CC

max 6V
Allowable power dissipation Pd max 150 mW
Operating temperature Topr –20 to +75 °C
Storage temperature Tstg –40 to +125 °C

Specifications

Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Recommended supply voltage V

CC

3V

Allowable voltage range V

CC

op 2.7 to 5.5 V

Operating Conditions at Ta = 25°C

No. 5651-2/9

LV2700V

Parameter Symbol Conditions

Ratings

Unit

min typ max

Quiescent current

I

CCO

TX TXVCC+ V

DD

8 11 mA

I

CCO

RX RFVCC+ RXVCC+ V

DD

12 16 mA
[TX Block]
Modulated signal voltage V

O

TX TXDATAOUT, f = 10 kHz 0.2 Vp-p

RF output voltage V

O

TX TXREOUT –35 dBm
Spread bandwidth WS TXRFOUT 19.7 MHz
[RX Block]
Input sensitivity V

S

RX RFIN –75 dBm

Demodulated output 1

High level V

O

RX1H RXOUT 2.5 V

Low level V

O

RX1L RXOUT 0.4 V

Demodulated output 1 V

O

RX2 Pin 10 output w/o CEXT 240 300 mVrms
Total harmonic distortion THD RX Pin 10 output w/o CEXT 0.5 2 %
Signal-to-noise ratio S/N Pin 10 output w/o CEXT 45 55 dB
[CMOS-Level Interface]
Input high-level voltage V

I

H Pins 11 to 15, 17 2.1 V

Input low-level voltage V

I

L Pins 11 to 15, 17 0.6 V

Output high-level voltage V

O

H Pins 8, 9 2.5 V

Output low-level voltage V

O

L Pins 8, 9 0.4 V

Input high-level current I

I

H Pins 11 to 15, 17 5 µA
Input low-level current IIL Pins 11 to 15, 17 5 µA
Input amplitude V

IN

VCOIN –16 dBm

Crystal oscillator frequency conditions X

OSC

XIN, XOUT 5 13 MHz

Input capacitance C

IN

RFIN, XIN, VCOIN 2.5 pF

Electrical Characteristics at Ta = 25°C, VCC= 3 V, fc = 236 MHz, fm = 10 kHz, Vm = 0.2 Vp-p

Block Diagram

No. 5651-3/9

LV2700V

Synchronization

control

Strong field

detector