71M6403
Electronic Trip Unit
SEPTEMBER 2006
Page: 68 of 75
©
2006 TERIDIAN Semiconductor Corporation
REV 1.0
ADC CONVERTER, VDD REFERENCED
FIR_LEN
=0,
VREF_DIS
=0,
VDDREFZ
=0
PARAMETER CONDITION
MIN
TYP
MAX
UNIT
Recommended Input Range
(Vin-
V3P3A
)
-250
250
mV
peak
THD (First 10 harmonics)
250mV-pk
20mV-pk
Vin=65Hz,
64kpts FFT, Blackman-
Harris window
-75
-90
dB
dB
Input Impedance
Vin=65Hz
40
90
k
Ω
Temperature coefficient of Input
Impedance
Vin=65Hz
1.7
Ω
/°C
LSB size
355
nV/LSB
Digital Full Scale
+884736 LSB
ADC Gain Error vs
%Power Supply Variation
3
.
3
/
3
3
100
/
357
10
6
A
P
V
V
nV
Nout
IN
PK
∆
∆
Vin=200mV pk, 65Hz
V3P3A=3.0v, 3.6V
50
ppm/%
Input Offset (Vin-
V3P3A
)
-10
10
mV
OPTICAL INTERFACE
PARAMETER CONDITION
MIN
TYP
MAX
UNIT
OPT_TX
V
OH
(
V3P3D
-
OPT_TX
)
I
SOURCE
=1mA
0.4
V
OPT_TX
V
OL
I
SINK
=20mA
0.7
V
OPT_RX
Vin Threshold
(Vin
RISING
+Vin
FALLING
)/2
200
250
300
mV
OPT_RX
Vin Hysteresis
(Vin
RISING
-Vin
FALLING
)
5
30
mV
OPT_RX
input impedance
|Vin|
≤
300mV 1
M
Ω
TEMPERATURE SENSOR
PARAMETER CONDITION
MIN
TYP
MAX
UNIT
Nominal Sensitivity (S
n
)
2
-900
LSB/ºC
Nominal Offset (N
n
)
2
T
A
=25ºC, T
A
=75ºC
Nominal relationship:
N(T)= S
n
*T+N
n
400000 LSB
Temperature Error
3
n
S
N
T
N
T
ERR
))
25
(
)
(
(
)
25
(
−
−
−
=
T
A
= -40ºC to +85ºC
-3
3
ºC
FOOTNOTES
2
This parameter defines a nominal relationship rather than a measured parameter. Correct circuit operation is verified with other specs
that use this nominal relationship as a reference.
31
This parameter is has been verified in production samples, but is not measured in production.
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