MCP3906 datasheet(4/26 Pages) MICROCHIP

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MCP3905/06

DS21948C-page 4

FIGURE 1-1:

Output Timings for Pulse Outputs and Negative Power Pin.

TIMING CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated, all parameters apply at AVDD = DVDD = 4.5V – 5.5V,

AGND, DGND = 0V, MCLK = 3.58 MHz; TA = -40°C to +85°C.

Parameter

Sym

Min

Typ

Max

Units

Comment

Frequency Output

FOUT0 and FOUT1 Pulse Width

(Logic-Low)

tFW

—

275

—

984376 MCLK periods

(Note 1)

HFOUT Pulse Width

tHW

—

322160 MCLK periods

(Note 2)

FOUT0 and FOUT1 Pulse Period

tFP

Refer to Equation 4-1

HFOUT Pulse Period

tHP

Refer to Equation 4-2

FOUT0 to FOUT1 Falling-Edge Time

tFS2

—

0.5 tFP

—

FOUT0 to FOUT1 Min Separation

tFS

—

4/MCLK

—

FOUT0 and FOUT1 Output High Voltage

VOH

4.5

——

VIOH = 10 mA, DVDD = 5.0V

FOUT0 and FOUT1 Output Low Voltage

VOL

——

0.5

IOL = 10 mA, DVDD = 5.0V

HFOUT Output High Voltage

VOH

4.0

——

VIOH = 5 mA, DVDD = 5.0V

HFOUT Output Low Voltage

VOL

——

0.5

IOL = 5 mA, DVDD = 5.0V

High-Level Input Voltage

(All Digital Input Pins)

VIH

2.4

——

VDVDD = 5.0V

Low-Level Input Voltage

(All Digital Input Pins)

VIL

——

0.85

DVDD = 5.0V

Input Leakage Current

——

±3

µA

VIN = 0, VIN = DVDD

Pin Capacitance

——

Note 3

Note 1:

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.

Specified by characterization, not production tested.

FOUT0

tFP

FOUT1

HFOUT

tFW

tHP

tHW

tFS

tFS2

NEG

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