Datasheet

 2006-2012 Microchip Technology Inc. DS22025C-page 5
MCP3909
TEMPERATURE CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, V
DD
= 4.5V to 5.5V, A
GND
, D
GND
= 0V.
Parameters Sym Min Typ Max Units Conditions
Temperature Ranges
Specified Temperature Range T
A
-40 — +85 °C
Operating Temperature Range T
A
-40 — +125 °C Note
Storage Temperature Range T
A
-65 — +150 °C
Thermal Package Resistances
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 (T
J
) must not exceed the Absolute Maximum specification of +150°C.
TIMING CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all parameters apply at AV
DD
= DV
DD
= 4.5V to 5.5V,
A
GND
, D
GND
= 0V, MCLK = 3.58 MHz; T
A
= -40°C to +85°C.
Parameter Sym Min Typ Max Units Comment
Frequency Outputs
F
OUT0
and F
OUT1
Pulse Width
(Logic Low)
t
FW
—
275
—
ms 984376 MCLK periods
(Note 1)
HF
OUT
Pulse Width t
HW
—
90 —
ms 322160 MCLK periods
(Note 2)
F
OUT0
and F
OUT1
Pulse Period t
FP
Refer to Equation 4-1 s
HF
OUT
Pulse Period t
HP
Refer to Equation 4-2 s
F
OUT0
to F
OUT1
Falling-Edge
Time
t
FS2
—
0.5 t
FP
—
F
OUT0
to F
OUT1
Minimum Sepa-
ration
t
FS
—
4/MCLK
—
Digital I/O
F
OUT0
and F
OUT1
Output High
Voltage
V
OH
4.5
——
VI
OH
= 10 mA, DV
DD
= 5.0V
F
OUT0
and F
OUT1
Output Low
Voltage
V
OL
——
0.5 V I
OL
= 10 mA, DV
DD
= 5.0V
HF
OUT
and NEG Output High
Voltage
V
OH
4.0
——
VI
OH
= 5 mA, DV
DD
= 5.0V
HF
OUT
and NEG Output Low
Voltage
V
OL
——
0.5 V I
OL
= 5 mA, DV
DD
= 5.0V
High-Level Input Voltage
(All Digital Input Pins)
V
IH
2.4
——
VDV
DD
= 5.0V
Low Level Input Voltage
(All Digital Input Pins)
V
IL
——
0.85 V DV
DD
= 5.0V
Input Leakage Current
—0.1
±1 µA V
IN
= 0, V
IN
= DV
DD
Pin Capacitance
——
10 pF (Note 3)
Note 1: If output pulse period (t
FP
) falls below 984376*2 MCLK periods, then t
FW
= 1/2 t
FP
.
2: If output pulse period (t
HP
) falls below 322160*2 MCLK periods, then t
HW
= 1/2 t
HP
. When F2, F1, F0
equals 0,1,1, the HF
OUT
pulse time is fixed at 64 x MCLK periods or 18 µs for MCLK = 3.58 MHz.
3: Specified by characterization, not production tested.
4: Serial timings specified and production tested with 180 pF load.