TDA7540N datasheet(49/76 Pages) STMICROELECTRONICS

49 / 76 page

TDA7540N

Software specification

49/76

Switch “OFF” ISS filter 120kHz

Switch “ON” ISS filter 80kHz

Switch “OFF” ISS filter 30KHz for weatherband

Switch “ON” ISS filter 30KHz for weatherband

000

discharge current1µA, charge current mid 74µA

narrow124µA

001

discharge current3µA, charge current mid 72µA

narrow122µA

010

discharge current5µA, charge current mid 70µA

narrow120µA

011

discharge current7µA, charge current mid 68µA

narrow118µA

111

discharge current15µA,charge current mid 60µA

narrow110µA

Table 21.

Addr 9 quality detection adjacent channel

MSB

LSB

Function

dc-coupling deviation detector (has to be 0 in AM mode)

ac-coupling deviation detector (recommended mode)

AC highpass frequency 100kHz

AC bandpass frequency 100kHz

AC gain 32dB

AC gain 38dB

AC wide band threshold 0.25V

AC wide band threshold 0.35V

AC wide band threshold 0.45V

---

AC wide band threshold 0.95V

AC narrow band threshold 0.0V

AC narrow band threshold 0.1V

AC narrow band threshold 0.2V

AC narrow band threshold 0.3V

Table 20.

Addr 8 quality ISS filter (continued)

MSB

LSB

Function

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