TDA8046 Datasheet, PDF (18/48 Pages) NXP Semiconductors – Multi-mode QAM demodulator

Philips Semiconductors
Multi-mode QAM demodulator
Product specification
TDA8046
handbook, full pagewidth
AGCI = 1
IAGC
DAC output
current
1_{/14 IAGC}
AGCI = 0
gain
digital input
−¹/₁₄ IACG
−IAGC
VAGC
MGG182
I_pos = positive output current; I_CLK.
I_neg = negative output current; −I_CLK.
I_oAGC = -⁽---I--^p--^o---^s---2-^–----I--ⁿ--^e---^g---⁾-
∆I_oAGC = -⁽-₍--I-I-^p-_p--^oo---^ss---^+–-----II--_nn--_e-^e--_gg--₎-⁾-- × 100
Fig.14 Definition of the DAC currents and the expected frequency behaviour of the AGC.
1996 Nov 19
18