2004 Nov 02

8

Philips Semiconductors

Product specification

DVB selective AGC amplifier

TDA9888TS; TDA9889TS

CHARACTERISTICS

1 : 1; gain controlled amplifier adjusted to low IF differential output of 2 V (p-p); measurements taken in test circuit of

Fig.11 with external 4 MHz reference signal of 140 mV (RMS); unless otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

supply voltage

note 1

4.5

5

5.5

V

supply current

46

55

64

mA

total power dissipation

−

275

352

mW

IF amplifier; pins IF1 and IF2; differential

maximum conversion gain

output peak-to-peak level to

input RMS level ratio

85

90

−

dB

minimum conversion gain

−

20

23

dB

IF gain control range

see Fig.3

60

70

−

dB

lower limit

−3 dB IF bandwidth note 2

−

15

−

MHz

upper limit

−3 dB IF bandwidth note 2

−

80

−

MHz

differential input resistance

note 2

−

2

−

k

Ω

differential input capacitance

note 2

−

3

−

pF

DC input voltage

−

1.9

−

V

Low IF output signal; pins LIF1 and LIF2; differential; see Fig.8

typical low IF operating output

voltage (peak-to-peak value)

−

2

−

V

upper clipping voltage level

(single-ended)

2.9

−−

V

lower clipping voltage level

(single-ended)

−−

0.6

V

output resistance (differential)

note 2

−−

150

Ω

DC output voltage

−

2

−

V

internal DC bias current for

emitter-follower (single-ended)

0.8

1

−

mA

source current (single-ended)

2.5

−−

mA

maximum AC and DC output

sink current (single-ended)

note 3

0.6

−−

mA

differential load impedance

note 2

1.7

−−

k

Ω

low IF band amplitude

characteristic

0 dB at middle of band

(standard independent)

−0.9

−

+0.9

dB

low IF band group delay ripple

from 1 MHz to 2 MHz

−−

150

ns

from 2 MHz to end of band

−−

100

ns

low-pass filter attenuation

6 MHz band; at 11.75 MHz

15

−−

dB

7 MHz band; at 13.75 MHz

15

−−

dB

8 MHz band; at 15.75 MHz

15

−−

dB

low-pass filter attenuation

any band; at 27 MHz

40

50

−

dB