TDA7786 datasheet(32/54 Pages) STMICROELECTRONICS

32 / 54 page

Electrical specifications

TDA7786, TDA7786M

32/54

DocID026122 Rev 5

3.4.4

Phase locked loop

3.4.5

Tuning DAC

3.4.6

IF ADC

Table 20. Phase locked loop

Symbol

Parameter

Test condition

Min

Typ

Max

Units

Tsettle

Settling time FM

∆f < 10 kHz

100

140

µs

FM step

FM Frequency step

kHz

AM step

AM frequency step

500

Table 21. Tuning DAC

Symbol

Parameter

Test condition

Min

Typ

Max

Units

Res

Resolution

8 bit

Voutmin

Min output voltage

0.6

0.75

Voutmax

Max output voltage

VCC-0.25 VCC-0.15

Rout

Output impedance

1.5

2.5

3.5

kΩ

DNL

Diff. Nonlinearity

0.5

LSB

Tconv

Conversion time

Without capacitive load

µs

Table 22. IF ADC

Symbol

Parameter

Test condition

Min

Typ

Max

Units

DRFM

Dynamic range in FM

BW = ±100 kHz

vnoiseFM

Input noise referred to mixer

input

RF gain 2

1.7

0.94

nV/

Hz

DRAM

Dynamic range in AM

BW = ±3 kHz

105

108

vnoiseAM

Input noise referred to mixer

input

normal gain

6.3

3.2

nV/

Hz

DRFM-HD

Dynamic range in FM-IBOC

BW = ±200 kHz

VnoiseFM-HD

Input noise referred to mixer

input

RF gain 2

2.3

1.2

nV/

Hz

DRAM-HD

Dynamic range in AM-IBOC

BW = ±15 kHz

100

vnoiseAM-HD

Input noise referred to mixer

input

normal gain

5.6

2.9

nV/

Hz

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