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V
5
Internal Ra
Internal Rb
V
is the IC-internal fixed voltage supply, and its voltage at Ta = 25°C is as shown in Table 9.
REG
Equipment Type
Internal Power Supply
α is set to 1 level of 64 possible levels by the electronic volume function depending on the data set in the 6-bit electronic
volume register. Table 10 shows the value for α depending on the electronic volume register settings.
Rb/Ra is the V
voltage regulator internal resistor ratio, and can be set to 8 different levels through the V
5
regulator internal resistor ratio set command. The (1 + Rb/Ra) ratio assumes the values shown in Table 11 depending
on the 3-bit data settings in the V
Table 10
D5 D4 D3 D2 D1 D0
0
0
0
0
0
0
0
0
0
.
.
.
1
1
1
1
1
1
1
1
1
Rev.2.1
Rb
=
+
⋅
1
V
EV
Ra
α
Rb
=
+
⋅
⋅
1
1
–
V
REG
Ra
162
[
]
(
)
α
=
−
⋅
Q
V
1
V
EV
162
REG
V
Thermal Gradient
–0.05
voltage regulator internal resistor ratio register.
5
α α α α α
0
0
0
63
0
0
1
62
0
1
0
61
.
.
.
1
0
1
2
1
1
0
1
1
1
1
0
(Equation A-1)
(constant voltage supply + electronic volume)
EV
+
–
Figure 8
Table 9
Units
[%/°C ]
EPSON
S1D10605 Series
V
DD
V
5
V
Units
REG
–2.1
[V]
voltage
5
25
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