78M6618-IM/F Maxim Integrated Products, 78M6618-IM/F Datasheet - Page 20

• Manufacturer Part Number: 78M6618-IM/F
• Description: IC PWR MEASUREMENT OCTAL 68-QFN
• Manufacturer: Maxim Integrated Products
• Type: Octal Power and Energy Measurement ICr

Specifications of 78M6618-IM/F

• Core: 80515
• Core Architecture: 80515
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: SPI, UART
• Maximum Clock Frequency: 500 KHz
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Number Of Programmable I/os: 19
• Number Of Timers: 1
• On-chip Adc: 21 bit, 10 Channel
• Operating Supply Voltage: 3.3 V
• Package / Case: QFN-68
• Processor Series: 78M6618
• Program Memory Size: 128 KB
• Program Memory Type: Flash
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

78M6618 Data Sheet
2.4.14 VREF
Table 18
1
2
20
Parameter
VREF output voltage, VREF(22)
VREF chop step
VREF power supply sensitivity
VREF input impedance
VREF output impedance
VNOM definition
VNOM temperature coefficients:
VREF(T) deviation from VNOM(T)
VREF aging
Guaranteed by design; not production tested.
This relationship describes the nominal behavior of VREF at different temperatures.
VREF
ΔVREF / ΔV3P3A
TC1
TC2
VNOM
(
T
)
shows the performance specifications for VREF. Unless otherwise specified, VREF_DIS = 0.
−
VNOM
(
T
)
2
(
T
)
max(
T
10
−
Table 18: VREF Performance Specifications
6
22
,
40
)
Ta = 22ºC
V3P3A = 3.0 to 3.6 V
VREF_DIS = 1,
VREF = 1.3 to 1.7 V
CAL =1,
I
VNOM
LOAD
= 10 µA, -10 µA
Condition
(
T
)
=
VREF
(
22
)
+
(
T
−
1.193
22
-40
Min
-1.5
100
3.18·(52.46-TRIMT)
)
TC
1
1
+
(
-0.444
T
1.195
Typ
±25
−
22
)
2
TC
1.197
+40
Max
2
1.5
2.5
40
DS_6618_005
1
PPM/ºC
Rev. 1.4
µV/°C
µV/ºC
mV/V
PPM/
Unit
year
mV
kΩ
kΩ
V
V
2