TC94A14F Datasheet, PDF (12/17 Pages) Toshiba Semiconductor – Digital Servo Single-Chip Processor for Use in CD Player

Analog Circuit Characteristics
1. AD Converter
Characteristics
Resolution
Sampling frequency
FE
TE
SBAD
RFRP
Conversion input range
Test
Circuit
Test Condition
¾
¾
¾
¾
¾
¾
¾
¾
AV_SS = 0 V
AV_DD3 = 3.3 V
TC94A14F/FA/FB
Min Typ. Max Unit
¾
8
¾
bit
¾ 176.4 ¾
¾ 176.4 ¾
kHz
¾ 88.2 ¾
¾ 176.4 ¾
0.15 ´
AV_DD3
¾
0.85 ´
AV_DD3
V
2. DA Converter (focus and tracking equalizer output)
Characteristics
Number of bits
Sampling frequency
Signal output range
Test
Circuit
Test Condition
¾
¾
¾
¾
¾ AV_SS = 0 V, AV_DD3 = 3.3 V
Min Typ. Max Unit
¾
¾
5
bit
¾
¾
2.8 MHz
AV_SS3 ¾ AV_DD3 V
3. PLL Filter Amp
Characteristics
I/O signal range
Frequency characteristic
Test
Circuit
Test Condition
¾
¾
¾ -3dB point (Gain = 1)
Min Typ. Max Unit
AV_SS3 ¾ PV_DD3 V
¾
8
¾ MHz
4. VCO (PLL)
Characteristics
Center oscillation frequency
Frequency variable range
Test
Circuit
Test Condition
¾ LPFO = V_REF
¾ [VCOGSL] bit = “L”
¾ [VCOGSL] bit = “H”
Min Typ. Max Unit
¾
34
¾ MHz
¾
±50
¾
%
¾
±60
¾
5. TEZI Signal Comparator
Characteristics
Input range
Hysteresis voltage
Test
Circuit
Test Condition
¾
¾
¾ V_REF reference
Min Typ. Max Unit
AV_SS3 ¾ AV_DD3 V
¾
±50
¾
mV
6. RFZI Signal Comparator
Characteristics
Input range
Hysteresis voltage
Test
Circuit
Test Condition
¾
¾
¾ V_REF reference
Min Typ. Max Unit
AV_SS3 ¾ AV_DD3 V
¾
±50
¾
mV
12
2002-11-18