5

ACE9040

Characteristic

Value

Unit

Conditions

Min.

Typ.

Max.

TX Audio Bandpass Filter TXBPF, IPS to TBPO

Noise

– 72

dBV

Distortion

1

%THD

1 Vrms output

Frequency response relative to 1040 Hz

– 60.5

– 38.5

dB

f = 60 Hz

– 25.5

– 10.5

dB

f = 184 Hz

INPSENSE = 0 dB

– 1.0

+ 0.5

dB

f = 430 Hz

THF = 0 dB

– 0.5

+ 0.5

dB

f = 676 Hz, 1040 Hz

– 0.5

+ 0.5

dB

f = 1410 Hz, 1900 Hz

– 1.5

– 0.5

dB

f = 3260 Hz

– 3.0

– 1.5

dB

f = 3500 Hz

– 10.5

– 5

dB

f

= 4120 Hz

– 20.5

– 15.5

dB

f = 5590 Hz

– 90.5

– 30.5

dB

f = 9900 Hz

TX Handsfree Gain Stage HFGAIN

Nominal gain

0

dB

Gain range

– 52.5

– 49

– 45.5

dB

THF[2:0] = 0 to 7

Gain step size

6.5

7

7.5

dB

0 to –21 dB

Gain step size

5

7

9

dB

–28 to –49 dB

TX Compressor Stage, CIN to COUT pins

Unity gain level

636

707

777

mVrms

= Vref (Unaffected level)

Input range

0.79

1000

mVrms

Linearity CIN to COUT:

± 0.5

dB

CIN = Vref + 3 dB to Vref - 59 dB

(Deviation from 2:1 I/O relationship)

BW = 300 Hz to 3.4 kHz

Attack time

3

ms

12 dB step: - 8 dB to - 20 dB relative

to the unity gain (Vref) level

Decay time

13.5

ms

Attack & Decay levels = 1.5 and 0.75

of steady state final value

Distortion

2

%THD

BW = 300 Hz - 3.4 kHz

Frequency response

± 0.2

dB

BW = 300 Hz - 3.4 kHz

TX Pre-emphasis, PREIN to TLPO pins

Input impedance

75

k

Ω

Internal compressor and BAR:

Nominal gain TACS

– 7.5

– 7

– 6.5

dB

COMP[2:1] = 10 or 01 at 1 kHz

Nominal gain AMPS

– 11.5

– 11

– 10.5

dB

External compressor and bypass:

Nominal gain AMPS & TACS

– 0.5

0

+ 0.5

dB

COMP[2:1] = 11 or 00 at 1 kHz

Frequency response

5.8

6

6.2

dB/

TEST[1:0] = 01

Octave

PREEMPH = 0 (active)

f = 300 to 3400 Hz

ELECTRICAL CHARACTERISTICS

These characteristics are guaranteed over the following conditions unless otherwise stated (Note 1):

T