8

ACE9030

ELECTRICAL CHARACTERISTICS

These characteristics apply over these ranges of conditions (unless otherwise stated):

T

A.C. Characteristics (continued)

Note

7. AUDIO signal quality is measured with feedback components as shown in figure 18 and with 500 mV peak to peak input to AFCIN.

Discriminator gain is set with D = 3 and M = 40 and V

to all unwanted output, measured simultaneously with filters. The hum and noise figure is defined as the ratio of output power at AUDIO when

AFCIN is unmodulated to the output power when AFCIN is driven as specified above.

Parameter

Min.

Typ.

Max.

Unit

Conditions

LOW FREQUENCY AMPLIFIERS (1 and 2)

Voltage Gain

1200

2800

Input Offset

10

20

mV

Open loop input resistance

1

M

Ω

Open loop output resistance

8

k

Ω

Unity Gain bandwidth

2

MHz

Input bias current, inverting input

200

nA

Power supply rejection at 120 Hz, 10 kHz

40

50

dB

Output voltage maximum

V

V

10 k

Ω to 6ND

Output voltage maximum, as a comparator

V

V

10 k

Ω to 6ND

Output voltage minimum level

0·2

V

10 k

Ω to 6ND

Output voltage minimum level

0·1

V

10 k

Ω to 6ND

Common mode input range (LF1 1)

V

SSA

2.5

V

Common mode input range (LF1 2)

V

SSA

V

DDA

Output slew rate

0.15

0.25

V/

µs

Output load capacitance

30

pF

8 MHz OSCILLATOR and PLL

OSC8 centre frequency

8·064

MHz

OSC8 VCO sensitivity

25

MHz/V

OSC8 charge pump output current

50

µA

CLK8 output load, resistive:

15

25

100

k

Ω

capacitive:

15

25

30

pF

CLK8 output amplitude

0·8

1·0

2·4

V

pk-pk

CLK8 total output jitter

500

Hz

0 - 3 kHz

Start-up time at power-on, to default settings

15

ms

With a loop filter as

described in fig. 17

Lock time to within 125 ppm, after

reprogramming set-ups

15

ms

AFCIN F.M. DISCRIMINATOR and AFC

AFCIN input signal level

0·05

2·5

V

pk-pk

AFCIN input impedance, resistive:

50

k

Ω

capacitive:

10

pF

Input frequency

400

500

kHz

Input signal to integrated noise ratio

10

dB

I.F.

± 15 kHz.

Input Schmitt Hysteresis

8

mV

AUDIO signal SINAD, psophometric, note 7

40

45

dB

1 kHz tone at 3 kHz

AUDIO signal hum and noise, note 7

– 46

dB

peak deviation on

AUDIO output signal level, note 7

195

260

mV

rms

AFCIN input at I.F.

AFCOUT load

30

pF

AFCOUT duty cycle

37

63

%

AFCOUT rise and fall times

75

ns