ATA5423-PLSW datasheet(77/100 Pages) ATMEL

77 / 100 page

4841D–WIRE–10/07

ATA5423/ATA5425/ATA5428/ATA5429

3.9

Impedance RF_OUT in

RX mode

RF = 315 MHz

RF_OUT_RX

(36 – j502)

Ω

RF = 345 MHz

RF_OUT_RX

(33 – j480)

Ω

RF = 433.92 MHz

RF_OUT_RX

(19 – j366)

Ω

RF = 868.3 MHz

RF_OUT_RX

(2.8 – j141)

Ω

RF = 915 MHz

RF_OUT_RX

(2.6 – j135)

Ω

3.10

Noise floor power

amplifier

at ±10 MHz/at 5 dBm

fRF = 315 MHz

(10)

TX10M

–127

dBC/Hz

fRF = 345 MHz

(10)

LTX10M

–126

dBC/Hz

fRF = 433.92 MHz

(10)

LTX10M

–126

dBC/Hz

fRF = 868.3 MHz

(10)

LTX10M

–125

dBC/Hz

fRF = 915 MHz

(10)

LTX10M

–125

dBC/Hz

3.11 ASK modulation rate

This corresponds to

10 Kbit/s Manchester

coding and 20 Kbit/s

NRZ coding

fData_ASK

110

kHz

4XTO

4.1

Pulling XTO due to XTO,

L1 and CL2 tolerances

Pulling at nominal

temperature and supply

voltage

fXTAL = resonant

frequency of the XTAL

C0 ≥ 1.0 pF

Rm ≤ 120Ω

24, 25

∆f

XTO1

Cm ≤ 7.0 fF

m ≤ 14 fF

–50

–100

fXTAL

+50

+100

ppm

4.2

Transconductance XTO at

start

At start

-up; after

start

-up the amplitude

is regulated to VPPXTAL

24, 25

gm, XTO

4.3

XTO start

-up time

C0 ≤ 2.2 pF

m < 14fF

Rm ≤ 120Ω

24, 25

PWR_ON_IRQ_1

300

800

µs

4.4

Maximum C0 of XTAL

Required for stable

operation with internal

load capacitors

24, 25

C0max

3.8

4.5

Internal capacitors

L1 and CL2

24, 25

L1, CL2

14.8

18 pF

21.2

12. Electrical Characteristics: General (Continued)

This device is manufactured with an industrial (not automotive) grade process and process controls. Although this device may

meet certain automotive grade criteria in performance, Atmel can not recommend that this device be used in any automotive

application.

All parameters refer to GND and are valid for Tamb = 25°C, VVS1 = VVS2 = 3.0V (1-battery application), VVS2 = 6.0V (2-battery application)

and VVS2 = VVAUX = 5.0V (Base-station Application). Typical values are given at fRF = 433.92 MHz unless otherwise specified. Details

about current consumption, timing and digital pin properties can be found in the specific sections of the “Electrical Characteristics”.

No. Parameters

Test Conditions

Pin(1)

Symbol

Min.

Typ.

Max.

Unit

Type*

*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter

Note:

1. Pin numbers in brackets mean they were measured with RF_IN matched to 50

Ω according to Figure 3-1 on page 11 with

component values according to Table 3-2 on page 12 and RF_OUT matched to 50

Ω according to Figure 3-10 on page 21

with component values according to Table 3-7 on page 22.

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