SMM665C
DC OPERATING CHARACTERISTICS (CONTINUED)
Symbol
V
OUT_VALID
UVLO
I
VDD_CAP
Parameter
Minimum Output Valid Voltage
UVLO (Under Voltage
Lockout) threshold (Note 4)
Notes
VDD_CAP voltage at which
the PUP, RST, HEALTHY
and FAULT outputs are valid
VDD_CAP rising
VDD_CAP falling
Min
Typ
1
2.6
2.5
10
10
Minimum resolution for which no
missing codes are guaranteed
Max
Unit
V
V
V
mA
Bits
Bits
Maximum load on VDD_CAP,
Note 10
AIN1/AIN2 ADC characteristics
N
Resolution
MC
S/N
DNL
INL
GAIN
OFFSET
Missing codes
10
72
-1/2
-1
-0.5
-1
+1/2
+1
+0.5
+1
Signal-to-noise Ratio
Differential non-linearity
Integral non-linearity
Positive full scale gain error
Offset error
Full scale temperature
ADC_TC
coefficient
IM
ADC
Analog ADC Input Impedance
II
VREF
V
REF
input current
IC
VREF
V
REF
input capacitance
IR
VREF
V
REF
input impedance
VMA-VMF, VDD ADC characteristics
N
Resolution
MC
S/N
ERR_ADC
Conversion rate = 500Hz
Note 7
Note 7
Note 7
±0.16
±15
10
250
200
1
dB
LSB
LSB
%
LSB
ppm/
o
C
MΩ
nA
pF
kΩ
Bits
Bits
10
Minimum resolution for which no
missing codes are guaranteed
Conversion rate = 500Hz
Total ADC Read Error
Missing codes
Signal-to-noise Ratio
Total ADC Error
10
72
-4
100
10
+4
dB
LSB
KΩ
Bits
Bits
IM
ADC
Analog ADC Input Impedance
12VIN ADC characteristics
N
Resolution
MC
S/N
ERR_ADC
VMA-VMF
Missing codes
Signal-to-noise Ratio
Total ADC Error
Minimum resolution for which no
missing codes are guaranteed
Conversion rate = 500Hz
Total ADC Read Error
10
72
-4
+4
dB
LSB
Note 1 – Range depends on internal regulator set to 3.6V or 5.5V see 12VIN specification.
Note 2 – See Application Note 37 which describes the type of capacitors to use to obtain minimum leakage.
Note 3 – All logic levels are with respect to the voltage on VDD_CAP, when supplied from VDD; VDD_CAP is equal to VDD, under no load.
Note 4 – (100mV typical Hysteresis)
Note 5 – Under certain operating conditions, self-heating could result in additional temperature sensor error.
Note 6 – SDA not included (separate electrical specification). The device can sink more than 20mA, however total I
SINK
from all PUPx pins should
not exceed 6mA or ADOC
ACC
specification will be affected.
Note 7 – The formula for the total ADC inaccuracy is: [((ADC read voltage) +/- INL)*(range of gain error)]+range of offset error
Note 8 – When temperature sensor is not used (determined by the hex file configuration setting) sensor accuracy is tested for typical values only.
Note 9 – The term “FAULT#” throughout this document describes a pin and output signal, whereas the term “fault” describes an operating
condition that may or may not activate the FAULT# pin. The FAULT# pin can only be activated by Ain1, Ain2 and Temperature fault conditions.
Note 10 – Guaranteed by Design and/or Characterization – not 100% tested in production.
Summit Microelectronics, Inc
2125 3.2 5/24/2011
9
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
