UPD784915B Datasheet, PDF (72/86 Pages) NEC – 16-BIT SINGLE-CHIP MICROCONTROLLERS

µPD784915B, 784916B
DFG amplifier (AC coupling) (TA = 25°C, VDD = AVDD = 5 V, VSS = AVSS = 0 V)
Parameter
Voltage gain
Feedback resistance
Input protection resistance
High comparator voltage
Low comparator voltage
Symbol
Condition
GDFG fi = 900 Hz, open loop
RFDFG
RIDFG
VDFGH
VDFGL
MIN.
TYP.
MAX. Unit
50
dB
160
400
640
kΩ
150
Ω
VREF + 0.07 VREF + 0.10 VREF + 0.14 V
VREF – 0.14 VREF – 0.10 VREF – 0.07 V
Caution Set the input resistance connected to the DFGIN pin to 16 kΩ or below. Connecting a resistor
exceeding that value may cause the DFG amp to oscillate.
DPG comparator (AC coupling) (TA = 25°C, VDD = AVDD = 5 V, VSS = AVSS = 0 V)
Parameter
Input impedance
High comparator voltage
Low comparator voltage
Symbol
ZIDPG
VDPGH
VDPGL
Condition
MIN.
TYP.
MAX. Unit
20
50
100
kΩ
VREF + 0.02 VREF + 0.05 VREF + 0.08 V
VREF – 0.08 VREF – 0.05 VREF – 0.02 V
Ternary separation circuit (TA = 25°C, VDD = AVDD = 5 V, VSS = AVSS = 0 V)
Parameter
Input impedance
High comparator voltage
Low comparator voltage
Symbol
ZIPFG
VPFGH
VPFGL
Condition
MIN.
TYP.
20
50
VREF + 0.5 VREF + 0.7
VREF – 1.4 VREF – 1.2
MAX.
100
VREF + 0.9
VREF – 1.0
Unit
kΩ
V
V
CSYNC comparator (AC coupling) (TA = 25°C, VDD = AVDD = 5 V, VSS = AVSS = 0 V)
Parameter
Input impedance
High comparator voltage
Low comparator voltage
Symbol
ZICSYN
VCSYNH
VCSYNL
Condition
MIN.
TYP.
MAX. Unit
20
50
100
kΩ
VREF + 0.07 VREF + 0.10 VREF + 0.13 V
VREF – 0.13 VREF – 0.10 VREF – 0.07 V
Reel FG comparator (AC coupling) (TA = 25°C, VDD = AVDD = 5 V, VSS = AVSS = 0 V)
Parameter
Input impedance
High comparator voltage
Low comparator voltage
Symbol
ZIRLFG
VRLFGH
VRLFGL
Condition
MIN.
TYP.
MAX. Unit
20
50
100
kΩ
VREF + 0.02 VREF + 0.05 VREF + 0.08 V
VREF – 0.08 VREF – 0.05 VREF – 0.02 V
RECCTL driver (TA = 25°C, VDD = AVDD = 5 V, VSS = AVSS = 0 V)
Parameter
RECCTL+, – high-level output voltage
RECCTL+, – low-level output voltage
CTLDLY internal resistance
CTLDLY charge current
CTLDLY discharge current
Symbol
Condition
VOHREC IOH = –4 mA
VOLREC IOL = 4 mA
RCTL
IOHCTL Use of internal resistor
IOLCTL
MIN.
VDD – 0.8
TYP.
40
70
–3
–3
MAX. Unit
V
0.8
V
140
kΩ
mA
mA
72