FX805LG View Datasheet(PDF) - CML Microsystems Plc

Part Name

Description

View to exact match

FX805LG

Sub-audio signalling processor

CML Microsystems Plc 

Specification ......

Characteristics

See Note

Min.

Typ.

Max.

Unit

CTCSS – Encode

Frequency Range

Tone Frequency Resolution

Tone Amplitude Tolerance

Rise Time

(to 90%)

Fall Time

(to 10%)

Total Harmonic Distortion

NRZ – Decode

Rx Bit-Rate Sync Time

Rx Bit Error Rate

11

NRZ – Tx

Tx Bit Rate

Tx LPF (3dB) Bandwidth

Sub-Audio Tx Output Level

CTCSS

NRZ

Amplitude Adjustment Range

Adjustment Step Size (7 steps)

8

Sub-Audio Bandstop Filter

Passband

Passband Gain

Passband Gain (w.r.t. gain at 1.0kHz)

Stopband Attenuation

at 250 Hz

at 150 Hz

at 100 Hz

Residual Hum and Noise

Alias Frequency

Xtal/Clock Frequency (f )

XTAL

65.0

–

-1.0

–

–

–

–

–

67.0

75

–

–

-2.58

–

297

–

-1.5

–

–

–

–

–

3.9

–

–

–

–

–

2

1 x 10-3

–

–

0

0.871

0.86

0

–

36.0

24.0

18.0

-50.0

–

–

257

0.2

+1.0

30.0

50.0

5.0

–

–

300

300

–

–

2.58

–

3000

–

+0.5

–

–

–

-46.0

62.5

4.1

Notes

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

Device control pins; Serial Clock, Command Data, Wake and CS.

Reply Data output.

Reply Data and IRQ outputs.

Leakage current into the “Off” IRQ output.

See Control Register.

With Input gain components set as recommended in Figure 2.

Probability 0.97

See Gain-Set Register, Table 7 - Bits 0, 1, 2 and 3.

For f

of 65Hz to 100Hz, Response Time t = (100/f ) x 250 ms.

CTCSS IN

R

TONE

Distributed across the Rx frequency band.

With 10dB signal-to-noise ratio in a bit-rate bandwidth.

Hz

%

dB

ms

ms

%

edges

P

(error)

bits/s

Hz

dB

V p-p

dB

dB

Hz

dB

dB

dB

dB

dB

dBp

kHz

MHz

15

Share Link: