L6000 ST Microelectronics, Inc., L6000 Datasheet - Page 10

• Manufacturer Part Number: L6000
• Description: Single Chip Read & Write Channel
• Manufacturer: ST Microelectronics, Inc.

L6000
PULSE DETECTOR AND SERVO DEMODULATOR CHARACTERISTICS (continued)
(*) Guaranted by design.
(2) Test limits under evaluation.
10/24
DATA PATH/
DATA PATH
Data Comparator Section
(The input signals are AC coupled to DATA PATH and DATA PATH)
Clocking Section
(The input signals are AC coupled to CLOCK PATH and CLOCK PATH)
Servo Section
Symbol
Kth
RO
Signal Range
Differential Input resistance
Differential Input capacitance
Comparator Offset Voltage
Threshold Voltage Hysteresis
Threshold Voltage Gain
Minimum Threshold Voltage
CLOCK PATH-CLOCK PATH
Signal Range
Comparator Offset Voltage
Differential Input Resistance
Differential Input Capacitance
Pulse Paring
Prpagation Delay to READ
DATA I/O
SERVO REF V Voltage Range
SERVO REF V Input Bias
Current
Voltage Gain, SERVO REF V
to POSITION OUT
POSITION OUT Pin Offset
Voltage
POSITION OUT Pin High
Level Output Voltage
POSITION OUT Pin Low
Level Output Voltage
POSITION OUT Pin Output
Resistance
POSITION OUT GAIN
HOLD CAP A/B Charge Current
Parameter
(*)
(*)
0.3
0.75, Kth = VTHDAC*0.651/127,
38 < VTHDAC < 125,
Vthresh = KTH*(LEVEL-LEVEL
REF V), also, %hyst =
VTHDAC*97.6%/127
LEVEL-LEVEL REF V
Vthmin = VTHDAC*0.099/127
(*)
(*)
Vs = 1Vpp, F = 4MHz
Vs = 20mVpp sq. wave
2.15V
|HOLD CAP A-HOLD CAP B|
0.4V
HOLD CAP A-HOLD CAP B =
0V, SERVO REF V = 2.50V
HOLD CAP A-HOLD CAP B =
+1.8V
SERVO REF V = 2.50V,
Isource = 0.5mA
HOLD CAP A-HOLD CAP B =
-1.8V
SERVO REF V = 2.50V Isink =
0.5mA
VNG+1.5V
OUT
(POSITION OUT-SERVO REF
V)/Vpp
Absolute Value
( LEVEL-LEVEL REF V)
Test Condition
VPG-1.5V
SERVO REF V
POSITION
0.1V,
2.75V
Kth-9%
PULSE
PULSE
DET-
GND
Min.
2.15
0.98
DET
+0.3
Vcc
1.5
–1
–
8
–
–
–
–
–
–
–
–
8
–
–
4
4
Vthmin
20Kth
Typ.
2.50
Kth
0.2
1.0
1.8
12
–
–
–
0
–
–
–
1
–
–
–
–
–
–
Kth+9%
PULSE
PULSE
DET-
Max.
GND
2.75
1.02
DET
+1.5
Vcc
1.5
1.5
0.5
0.3
14
14
20
50
5
–
–
5
1
12
–
4
4
V/Vpp
Unit
Vpp
Vpp
V/V
K
mV
mV
K
mV
mA
pF
pF
v/v
%
ns
ns
(2)
V
V
V
V
A