TDA8046 Datasheet, PDF (14/48 Pages) NXP Semiconductors – Multi-mode QAM demodulator

Philips Semiconductors
Multi-mode QAM demodulator
Product specification
TDA8046
handbook, full pagewidth
CARI = 1
ICAR
DAC output
current
1_{/2 ICAR}
CARI = 0
−¹/₂ ICAR
digital input
−ICAR
fVCO
VCARREC
MGG180
I_pos = positive output current.
I_neg = negative output current.
I_O = -⁽---I--^p--^o---^s---2-^–----I--ⁿ--^e---^g---⁾-
∆I_O = -⁽-₍--I-I-^p-_p--^oo---^ss---^+–-----II--_nn--_e-^e--_g-^g-₎-⁾-- × 100
Fig.10 Definition of the DAC currents and the expected frequency behaviour of the VCO.
1996 Nov 19
14