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MCP3905A/05L/06A
TIMING CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all parameters apply at AV DD = DV DD = 4.5V – 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 Output
F OUT0 and F OUT1 Pulse Width
t FW
—
275
—
ms
984376 MCLK periods
(Logic Low) for MCP3905A, MCP3906A
devices
( Note 1 )
HF OUT Pulse Width for MCP3905A,
t HW
—
90
—
ms
322160 MCLK periods
MCP3906A devices
( Note 2 )
F OUT0 and F OUT1 Pulse Width
t FW
—
130
—
ms
465344 MCLK periods
(Logic Low) for MCP3905L device
( Note 1 )
HF OUT Pulse Width for MCP3905L
t HW
—
65
—
ms
232672 MCLK periods
device
( Note 2 )
F OUT0 and F OUT1 Pulse Period
HF OUT Pulse Period
t FP
t HP
Refer to Equation 4-1
Refer to Equation 4-2
s
s
F OUT0 to F OUT1 Falling-Edge Time
F OUT0 to F OUT1 Min Separation
t FS2
t FS
—
—
0.5 t FP
4/MCLK
—
—
F OUT0 and F OUT1 Output High Voltage
F OUT0 and F OUT1 Output Low Voltage
HF OUT Output High Voltage
HF OUT Output Low Voltage
High-Level Input Voltage
V OH
V OL
V OH
V OL
V IH
4.5
—
4.0
—
2.4
—
—
—
—
—
—
0.5
—
0.5
—
V
V
V
V
V
I OH = 10 mA, DV DD = 5.0V
I OL = 10 mA, DV DD = 5.0V
I OH = 5 mA, DV DD = 5.0V
I OL = 5 mA, DV DD = 5.0V
DV DD = 5.0V
(All Digital Input Pins)
Low Level Input Voltage
V IL
—
—
0.85
V
DV DD = 5.0V
(All Digital Input Pins)
Input Leakage Current
Pin Capacitance
—
—
—
—
±3
10
μA
pF
V IN = 0, V IN = DV DD
Note 3
Note 1:
2:
3:
If output pulse period (t FP ) falls below 984376*2 MCLK periods for MCP3905A/6A and 465344*2 MCLK
periods for MCP3905L, then t FW = 1/2 t FP .
If output pulse period (t HP ) falls below 322160*2 MCLK periods for MCP3905A/6A and 232672*2 MCLK
periods for MCP3905L, then t HW = 1/2 t HP . When F2, F1,F0 = 011, t HW is fixed to 18 μs (64 MCLK
periods).
Specified by characterization, not production tested.
? 2006-2011 Microchip Technology Inc.
DS22011B-page 5
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