AD7746ARUZ datasheet(5/28 Pages) AD

Nome de Peças	AD7746ARUZ

Descrição Electrónicos	24-Bit Capacitance-to-Digital Converter with Temperature Sensor

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Fabricante Electrônico	AD [Analog Devices]

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AD7745/AD7746

Rev. 0| Page 5 of 28

TIMING SPECIFICATIONS

VDD = 2.7 V to 3.6 V, or 4.75 V to 5.25 V; GND = 0 V; Input Logic 0 = 0 V; Input Logic 1 = VDD; –40°C to +125°C, unless otherwise noted.

Table 2.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

SERIAL INTERFACE1, 2

See Figure 3

SCL Frequency

0

400

kHz

SCL High Pulse Width, tHIGH

0.6

µs

SCL Low Pulse Width, tLOW

1.3

µs

SCL, SDA Rise Time, tR

0.3

µs

SCL, SDA Fall Time, tF

0.3

µs

Hold Time (Start Condition), tHD;STA

0.6

µs

After this period, the first clock is generated

Set-Up Time (Start Condition), tSU;STA

0.6

µs

Relevant for repeated start condition

Data Set-Up Time, tSU;DAT

0.25

µs

VDD ≥ 3.0 V

Data Set-Up Time, tSU;DAT

0.35

µs

VDD < 3.0 V

Set-Up Time (Stop Condition), tSU;STO

0.6

µs

Data Hold Time, tHD;DAT (Master)

0

µs

Bus-Free Time (Between Stop and Start Condition, tBUF)

1.3

µs

1 Sample tested during initial release to ensure compliance.

2 All input signals are specified with input rise/fall times = 3 ns, measured between the 10% and 90% points. Timing reference points at 50% for inputs and outputs.

Output load = 10 pF.

P

S

tLOW

tR

tF

tHD:STA

tHD:DAT

tSU:DAT

tSU:STA

tHD:STA

tSU:STO

tHIGH

SCL

PS

SDA

tBUF

Figure 3. Serial Interface Timing Diagram

Nº de peça semelhante - AD7746ARUZ

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Analog Devices	AD7746ARUZ	779Kb / 28P	24-Bit Capacitance-to-Digital Converter with Temperature Sensor REV. 0
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