E0C6274
Reference voltage generation circuit
(Unless otherwise specified: V
DD
=V
DDA
=3.0V, V
SS
=V
SSA
=0V, f
OSC1
=32.768kHz, Ta=25°C, C
G
=25pF, V
D1
/V
C1
–V
C3
are internal voltage, C1–C6=0.1µF)
Condition
Typ.
Max.
Characteristic
Symbol
Min.
Unit
GND reference, Internal adjustment mode
-475
Output voltage (1)
V
R1O
mV
VRON = VRAON = "1"
GND reference, Internal adjustment mode
(-163.8
mV
)
1.0
Output voltage (2)
V
R2O
-1.0
%
VRON = VRAON = "1"
GND reference, External adjustment mode
Input voltage
-475
V
R1I
mV
VRON = VRAON = "0", (Input voltage when the
measurement error becomes minimum)
1.0
Input current
0
I
VR1
External adjustment mode
µA
A/D related are all OFF.
VRON = VRAON = "0"
Current that flows in external parts is not included.
Temperature characteristics V
R2
/Ta
Ta = 0 to 50°C
(25°C standard)
VRON = "1"
Supply voltage
characteristics
V
R2
/V
DDA
V
DDA
= 2.4 to 5.5 V
VRON = "1"
Internal adjustment mode
VRAON = "1"
External adjustment mode
VRAON = "0"
Internal adjustment mode
VRAON = "1"
External adjustment mode
VRAON = "0"
-300
-300
-0.30
-0.15
150
150
0
0
10.0
2.0
600
600
0.30
0.15
30.0
5.0
ppm/°C
%FS
Power current consumption I
AD1
∗
Internal adjustment mode
VRON = VRAON = "1"
External adjustment mode
I
AD2
VRON = "1", VRAON = "0"
Error, deviation and power current consumption by external parts are not included.
µA
Middle electric potential (GND) generation circuit
(Unless otherwise specified: V
DD
=V
DDA
=3.0V, V
SS
=V
SSA
=0V, f
OSC1
=32.768kHz, Ta=25°C, C
G
=25pF, V
D1
/V
C1
–V
C3
are internal voltage, C1–C6=0.1µF)
Unit
Characteristic
Symbol
Condition
Min.
Typ.
Max.
V
Output voltage
GND
O
GNDON = "01, 10, 11"
V
DDA
/2
V
DDA
/2
V
DDA
/2
-0.05
+0.05
Input voltage
GND
I
GNDON = "00"
V
DDA
/2
V
DDA
/2
V
DDA
/2
V
-0.05
+0.05
µA
Input current
I
GND
GNDON = "00", A/D related are all OFF.
0
1.0
Current that flows in external parts is not included.
High level output current
GNDON = "01, 10, 11"
V
OH
= GND - 10 mV
Low level output current (1) I
OL1
GNDON = "01"
V
OL1
= GND + 10 mV
Low level output current (2) I
OL2
GNDON = "10"
V
OL2
= GND + 10 mV
Low level output current (3) I
OL3
GNDON = "11"
V
OL3
= GND + 10 mV
Temperature characteristics
GND/T
a Ta = 0 to 50°C (25°C standard)
GNDON = "01, 10, 11"
Supply voltage
GND/V
DDA
V
DDA
= 2.4 to 5.5 V
GNDON = "01, 10, 11"
characteristics
Power current consumption I
GND1
GNDON = "01"
I
GND2
GNDON = "10"
I
GND3
GNDON = "11"
∗
GNDON is mark of GNDON1 or GNDON0.
I
OH
-100
10.0
20.0
40.0
-30
0.5
125
250
500
30
10.0
500
1000
2000
µA
µA
µA
µA
ppm/°C
mV/V
µA
8
SEIKO [ SEIKO EPSON CORPORATION ]
