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Ram01 – Rainbow Electronics RAM01 User Manual

Page 4

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RAM01

Version: 1.0 Date: 10/11/2008

Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com

4

BR = 9.6 kbps, Average signal
power

IIP3

outh

Input IP3

out of band interferers
f-f

LO

> 5MHz

-18

dBm

CCR

Co-channel rejection

BER = 10

-2

with continuous wave

interferer in the channel

-4

dB

BR

100kHz

Blocking ratio

BER = 10

-2

with continuous wave

interferer, BW = 85 kHz,
interferer offset 100 kHz

45

dB

BR

1MHz

Blocking ratio

same as above,

interferer offset 1 MHz

50

dB

BR

10MHz

Blocking ratio

same as above,
interferer offset 10 MHz

67

dB

P

maxh

Maximum input power

LNA: high setting
min 99.99% OOK modulation

-15

dBm

P

maxa

Maximum input power

LNA: automatic or low gain setting
min 99.9% OOK modulation

0

dBm

R

in

RF input impedance real
part (differential) (Note 1)

250

Ohm

C

in

RF input capacitance

460

fF

RS

a

RSSI accuracy

+/-7

dB

RS

r

RSSI range

With automatic 32 dB LNA gain
switch

90

dB

RS

resp

DRSSI response time

Until the RSSI output goes high
after the input signal exceeds the
preprogrammed
limit, C

ARRSI

= 5nF

500

μs

f

ref

PLL reference frequency

(Note 2)

10

MHz

f

resLB

PLL frequency resolution

434 MHz Band

10

kHz

f

resHB

PLL frequency resolution

868 MHz or 915 MHz Band

20

kHz

T

settl

PLL settling time

Frequency error < 1 kHz
after 1 MHz step

30

μs

t

st1, P

PLL startup time

Initial calibration after power-up with
running crystal oscillator

500

μs

P

spur

Spurious emission

-60

dBm

C

xl

Crystal load capacitance,

see crystal selection guide

Programmable in 0.5 pF steps,

tolerance +/- 10%

8.5

16 pF

t

POR

Internal POR pulse width

(Note 3)

After V

dd

has reached 90% of final

value

50

100

ms

t

sx

Crystal oscillator startup
time

Crystal ESR < 30 Ω

5

ms

t

PBt

Wake-up timer clock period

Calibrated every 30 seconds (Note
4)

0.995

1

1.005

ms

t

wake-up

Programmable wake-up
time

1

8.4*10

6

ms

C

in, D

Digital input capacitance

2

pF

t

r, f

Digital output rise/fall time

15 pF pure capacitive load

10

ns

t

r, f ,ckout

Clock output rise/fall time

10 pF pure capacitive load

15

ns

f

ckout, slow

Slow clock frequency

Tolerance +/- 1 kHz

32

kHz

Note 1: See matching circuit parameters and antenna design guide for information, and Application Notes available

from http://www.hoperf.com.

Note 2: Using other than a 10 MHz crystal is not recommended because the crystal referred timing and frequency

parameters will change accordingly.

Note 3: During this period, commands are not accepted by the chip.

Note 4: Autocalibration can be turned off.