VSS terminals number 1, 10 and 11 must be connected to the ground on the mounting board.
SEIKO NPC CORPORATION - 2
SM3471AB
BLOCK DIAGRAM
VDD
A
AN
B
BN
Z
ZN
SEL0
SEL1
ZSEL
Buffer
Buffer
DA
AMP
Interpolation
Buffer
DB
DZ
Vref
VREF
VSS
SPECIFICATIONS
Absolute Maximum Ratings
V
SS
=0V
Parameter
Supply voltage 1
*1
Input voltage
*1,*4
Output voltage
*1,*4
Output current
*2
Junction temperature
*3
Power dissipation
*1
Storage temperature
*5
Symbol
V
DD
V
IN
V
OUT
I
OUT
T
j
P
D
T
stg1
T
a
=25°C
*8
Condition
VDD pin
Input pins
*6
Output pins
*7
Output pins
*
7
Rating
–0.3 to +6.5
–0.3 to V
DD
+0.3
–0.3 to V
DD
+0.3
-1.8 to 1.8
+150
1570
–40 to +125
Unit
V
V
V
mA
°C
mW
°C
*1. Parameters must not exceed the ratings, not even momentarily. If the rating is exceeded, there is a risk of IC failure, deterioration in characteristics,
and decrease in reliability.
*2. Parameter must not exceed the rating on average. If the rating is exceeded, there is a risk of IC failure, deterioration in characteristics and decrease in
reliability.
*3. Parameter should not exceed the rating. If the rating is exceeded, there is a risk of deterioration in characteristics and decrease in reliability.
*4. V
DD
value is the recommended operating voltage rating.
*5. Stored separately without packing material in Nitrogen or vacuum atmosphere.
*6. SEL0, SEL1, ZSEL, A, AN, B, BN, Z, and ZN terminals.
*7. DA, DB, and DZ terminals.
*8. 114.3×76.2×1.6mm, 150% wiring ratio, FR-4 4-layer board (with thermal pad connections). Dissipation will vary due to differences in board
specifications and footprint pattern.
SEIKO NPC CORPORATION - 3
SM3471AB
Power Dissipation
2000
1800
Power dissipation Pd [mW]
1600
1400
1200
1000
800
600
400
200
0
0
25
50
75
100
125
Operating temperature Ta [°C]
Recommended Operating Conditions
The recommended operating conditions are the conditions for which the electrical characteristics are guaranteed.
V
SS
=0V
Parameter
Supply voltage
Logic input voltage
Analog Input voltage range
*1
Input signal amplitude
*1
Input offset voltage
*2
Input signal frequency
Operating temperature range
Symbol
V
DD
V
IN1
V
IN2
V
INPP
V
OFFSET
F
IN
T
a
VDD pin
SEL0, SEL1, ZSEL pins
A, AN, B, BN, Z, and ZN pins
A, AN, B, BN, Z, and ZN pins
A-AN center offset
B-BN center offset
V
DD
=5.0V, 25°C
A, AN, B, BN, Z, and ZN pins
Condition
MIN
2.7
V
SS
1
0.6
-25
-
–40
TYP
-
-
-
-
-
-
-
MAX
5.5
V
DD
V
DD
–1
-
25
300
+125
Unit
V
V
V
Vpp
mV
kHz
°C
Note. Operation outside the recommended operating conditions may adversely affect reliability. Use only within specified ratings.
*1 Definition V
IN2
and V
INPP
V
DD
V
IN2
(max)=V
DD
-1V
*2 Definition V
OFFSET
A, AN(B, BN) each ±12.5mV
⇒Absolute
value:25mV
A(B)
V
IN2
V
IN2
(min)=1
0V
V
INPP
AN(BN)
AMP
* Higher accuracy is obtained by increasing signal amplitude V
INPP
,
so largest value within the input voltage range is recommended.
SEIKO NPC CORPORATION - 4
SM3471AB
Electrical Characteristics
V
DD
=2.7 to 5.5V, V
SS
=0V, Ta=–40 to +125°C unless otherwise noted
Parameter
Current consumption
*1
Logic input voltage
*2
Logic input current
*2
Output voltage
*3
Output frequency
Angular error
*4
(max – min)
Rise/Fall time
Symbol
I
DD
V
IH
V
IL
I
IH
I
IL
V
outH
V
outL
f
out
V
DD
=5.0V,
16x interpolation,
Input ideal sin(cos) wave,
10kHz input frequency,
3.0Vppinput amplitude
0.1V
DD
to 0.9V
DD,
CL=20pF
V
IN
=V
DD
, T
a
=25°C
V
IN
=V
SS
, T
a
=25°C
I
out
= +1.5mA
I
out
= –1.5mA
No load
Condition
MIN
-
0.7V
DD
V
SS
20
–1
V
DD
–0.4
-
-
TYP
15
-
-
-
-
-
-
-
MAX
25
V
DD
0.3V
DD
200
-
-
0.3
2.5
Unit
mA
V
μA
V
MHz
A
RAL
-
-
6
Degrees
t
rf
-
-
10
ns
*1. Typical conditions: V
DD
=5V, Ta=25°C, 8x interpolation, F
IN
=10kHz
*2. SEL0, SEL1, and ZSEL terminals.
*3. DA, DB, and DZ terminals.
*4. The angular error expresses the variation from the ideal phase difference of interpolation outputs DA and DB as a phase difference of the input period.
Converting 6° and expressing as a percentage of the output period gives 26.6% using equation (1) below.
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