AS3931 datasheet(7/31 Pages) AMSCO

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AS3931

Datasheet - Electrical Character i s t ics

6 Electrical Characteristics

TAMB = -20° to +65° C, VCC = 3.0 V, fIN = 20 kHz, register settings as after POR, CS = low, transmission protocol according to Figure 15,

Figure 16 and application circuit according to Figure 1 unless otherwise specified.

Table 3. Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Units

General

fIN

LF input carrier frequency

range

150

kHz

Half-bit rate

2.704

2.731

2.758

kB/s

Manchester Bit Rate

1.352

1.365

1.379

kB/s

Manchester Code Word

hex

NPRE

Preamble half-bits

VREG

Regulator Voltage

VCC = 2.6 V to 5.5 V

2.30

2.4

2.60

TPOR

Power On Reset time

VCC = 2.4 V to 5.5 V

ICC

operating current

regulator off,

VCC = 2.4 V;

TAMB = 27° C

sleep mode

0.3

µA

standby mode

6.5

µA

receive mode

6.7

µA

regulator off,

VCC = 2.4V to

3.5V;

TAMB = 27° C

sleep mode

0.5

standby mode

6.8

regulator on,

TAMB = 27° C

sleep mode

0.8

1.5

µA

standby mode

7.0

8.8

µA

receive mode

7.2

µA

regulator on,

RSSI-step =

low;

TAMB = 27° C

standby mode

6.6

IBUF

RSSI buffer operating

current

No load at RSSI-Pin

µA

ΔVCC

VCC transient compliance

recovery time = 10 ms; regulator on

2.6 V < VCC < 5.5 V for VCC after step

recovery time = 10 ms; regulator off

2.4 V < VCC < 5.5 V for VCC before step

0.3

ZIN

Differential small sig. input

impedance

normal operation; TAMB = 27º

input attenuator active;

TAMB = 27º

1.5

input shortcutting active;

TAMB = 27º

0.5

fXTAL

crystal oscillator frequency

Crystal type: CC4 from MicroCrystal

32.768

kHz

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