TDA8809T Datasheet, PDF (8/16 Pages) NXP Semiconductors – Radial error signal processor for compact disc players

Philips Semiconductors
Radial error signal processor for compact
disc players
Product specification
TDA8809T
SYMBOL
PARAMETER
CONDITIONS
MIN.
Gain control (continued)
I_AGC
I_AGC
Radial error trackcrossing
rad off; V_AGC = 3,8 V
I_Re2−I_Re1 = −12 µA;
I_Re2+I_Re1 = −200 µA
I_Re2−I_Re1 = −48 µA;
I_Re2+I_Re1 = −200 µA
Offset control (offset out)
I_{offset out}
Offset current
Offset lag current for
rad on; I_CHPF = 0;
I_Re1 = I_Re2 = −110 µA
rad on; lag hold off;
V_AGC = 3,8 V;
I_Re1 = I_Re2 = −110 µA
minimum amplification Re1 V_{offset in} =
I_lag
maximum amplification Re2 V_ref − 1,2 V
minimum amplification Re2 V_{offset in} =
I_lag
maximum amplification Re1 V_ref + 1,2 V
I_lag
Offset lag current
note 3
Transconductance factor
rad off; V_AGC = 3,8 V;
I_Re1 = I_Re2 = −100 µA;
V_{range offset in} =
0,6 V (int.);
--^∆_V------V--r--^∆--_a--^o----_n^I--f--^o--_gf--^s--^f--_ef--^e--^s----^to-^e-----_fit--^nf----_so----^â‹-_e^-u----I_t--^t--^t--_i--^o--_n---^t
I_tot = I_Re1 + I_Re2
−3
39
−0,1
−115
+85
−7
0,17
TYP.
MAX.
0
3
49
59
0
0,1
−100 −85
+100
0
+115
+7
0,21
0,25
UNIT
µA
µA
µA
µA
µA
µA
--^∆_V------V--r--^∆--_a--^o----_n^I--f--^o--_gf--^s--^f--_ef--^e--^s----^to-^e-----_fit--^nf----_so----^â‹-_e^-u----I_t--^t--^t--_i--^o--_n---^t
rad off; V_AGC = V_GND
I_Re1 = I_Re2 = −100 µA;
V_{range offset in} =
0,6 V (int.);
I_tot = I_{Re1 +} I_Re2
−0,1
0
0,1
Z_{offset in}
Input impedance
−
(5)
−
MΩ
November 1987
8