TEF6721HL_4 © Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet Rev. 04 — 20 December 2005 34 of 48
Philips Semiconductors
TEF6721HL
Car radio tuner front-end for digital IF
[1] Measured between pins XTAL1 and XTAL2.
[2] DAA conversion gain formula: ; where
n = 0 to 127.
[3] V
LSB
=V
DAAOUT(n+1)
− V
DAAOUT(n)
[4] The AM AGC transconductance buffer delivers a sink current which is proportional to the voltage change at pin TRFAMAGC.
[5] Image rejection ratio:
V
i(max)(p)
maximum input voltage
(peak value)
1 dB compression point of
IF AGC amplifier output
voltage
V
IFAGCMSB
= 0.2 V;
V
IFAGCLSB
= 0.2 V
120 - - mV
V
IFAGCMSB
= 0.2 V;
V
IFAGCLSB
= 2.8 V
220 - - mV
V
IFAGCMSB
= 2.8 V;
V
IFAGCLSB
= 2.8 V
440 - - mV
V
IFAGCMSB
= 2.8 V;
V
IFAGCLSB
= 0.2 V
600 - - mV
Crystal frequency Digital Auto Alignment (DAA)
Output: pin VDAC
V
o(max)
maximum output voltage data byte 5 = XXX0 0000
(n=0)
7.4 - - V
V
o(min)
minimum output voltage data byte 5 = XXX1 1111
(n = 31)
- - 1.7 V
∆V
o(step)
DAA step accuracy n = 0 to 31 100 200 300 mV
V
o(n)
DAA output noise voltage B = 300 Hz to 22 kHz - 100 130 µV
Table 29: Dynamic characteristics
…continued
V
FMMIXOUT1
=V
AMMIXOUT1
=V
FMMIXOUT2
=V
AMMIXOUT2
=V
DDA1
=V
DDA2
=V
DDA3
=V
DDA4
=V
DDA5
= 8.5 V; V
DDA6
=5V;
V
DDD
=5V; T
amb
=25
°
C; see Figure 9; all AC values are given in RMS; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
V
DAAOUT
2 0.75
n
128
---------
0.125+×
× V
DAAIN
V
DAATD
+()× V
DAATD
–=
∆V
TRFAMAGC
V
TRFAMAGC
V
TRFAMAGC
V
AMMIXIN
V
AMMIXDEC
–()10 mV<
–=
IRR
V
(FMMIXOUT1-FMMIXOUT2)wanted
V
(FMMIXOUT1-FMMIXOUT2)image
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