MCP3909
TEMPERATURE CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, VDD = 4.5V to 5.5V, AGND, DGND = 0V.
Parameters
Sym Min Typ Max Units
Conditions
Temperature Ranges
Specified Temperature Range
TA
Operating Temperature Range
TA
Storage Temperature Range
TA
Thermal Package Resistances
-40 — +85
-40 — +125
-65 — +150
°C
°C Note
°C
Thermal Resistance, 24L-SSOP JA
— 73
—
°C/W
Note: The MCP3909 operates over this extended temperature range, but with reduced performance. In any case,
the Junction Temperature (TJ) must not exceed the Absolute Maximum specification of +150°C.
TIMING CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all parameters apply at AVDD = DVDD = 4.5V to 5.5V,
AGND, DGND = 0V, MCLK = 3.58 MHz; TA = -40°C to +85°C.
Parameter
Sym
Min
Typ
Max Units
Comment
Frequency Outputs
FOUT0 and FOUT1 Pulse Width
tFW
—
275
—
ms 984376 MCLK periods
(Logic Low)
(Note 1)
HFOUT Pulse Width
tHW
—
90
—
ms 322160 MCLK periods
(Note 2)
FOUT0 and FOUT1 Pulse Period
tFP
Refer to Equation 4-1
s
HFOUT Pulse Period
tHP
Refer to Equation 4-2
s
FOUT0 to FOUT1 Falling-Edge
tFS2
—
0.5 tFP
—
Time
FOUT0 to FOUT1 Minimum Sepa-
tFS
ration
—
4/MCLK
—
Digital I/O
FOUT0 and FOUT1 Output High
VOH
4.5
—
—
V IOH = 10 mA, DVDD = 5.0V
Voltage
FOUT0 and FOUT1 Output Low
VOL
—
Voltage
—
0.5
V IOL = 10 mA, DVDD = 5.0V
HFOUT and NEG Output High
VOH
4.0
—
—
V IOH = 5 mA, DVDD = 5.0V
Voltage
HFOUT and NEG Output Low
VOL
—
Voltage
—
0.5
V IOL = 5 mA, DVDD = 5.0V
High-Level Input Voltage
(All Digital Input Pins)
VIH
2.4
—
—
V DVDD = 5.0V
Low Level Input Voltage
(All Digital Input Pins)
VIL
—
—
0.85
V DVDD = 5.0V
Input Leakage Current
Pin Capacitance
—
0.1
±1
µA VIN = 0, VIN = DVDD
—
—
10
pF (Note 3)
Note 1:
2:
3:
4:
If output pulse period (tFP) falls below 984376*2 MCLK periods, then tFW = 1/2 tFP.
If output pulse period (tHP) falls below 322160*2 MCLK periods, then tHW = 1/2 tHP. When F2, F1, F0
equals 0,1,1, the HFOUT pulse time is fixed at 64 x MCLK periods or 18 µs for MCLK = 3.58 MHz.
Specified by characterization, not production tested.
Serial timings specified and production tested with 180 pF load.
2006-2012 Microchip Technology Inc.
DS22025C-page 5