AD7314ARM datasheet(2/8 Pages) AD

2 / 8 page

REV. 0

–2–

AD7314–SPECIFICATIONS1 (T

A = TMIN to TMAX, VDD = 2.65 V to 2.9 V, unless otherwise noted.)

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

TEMPERATURE SENSOR AND ADC

Accuracy

±2.0

°CT

A = –35

°C to +85°C.

Resolution

Bits

Update Rate, tR

400

µs

Temperature Conversion Time

µs

SUPPLIES

Supply Voltage

2.65

2.9

For Specified Performance

Supply Current

Normal Mode (Inactive)

250

300

µA

Part not Converting

Normal Mode (Active)

Part Converting

Shutdown Mode

µA

Power Dissipation

860

µWVDD = 2.65 V. Using Normal Mode

(Auto Conversion)

Power Dissipation

VDD = 2.65 V. Using Shutdown Mode

1 sps

µW

10 sps

3.3

µW

100 sps

µW

DIGITAL INPUT

Input High Voltage, VIH

1.85

VDD = 2.65 V to 2.9 V

Input Low Voltage, VIL

0.53

VDD = 2.65 V to 2.9 V

Input Current, IIN

±1

µAVIN = 0 V to VDD

Input Capacitance, CIN

All Digital Inputs

DIGITAL OUTPUT

Output High Voltage, VOH

2.4

ISOURCE = ISINK = 200

µA

Output Low Voltage, VOL

0.4

IOL = 200

µA

Output Capacitance, COUT

NOTES

1All specifications apply for –35

°C to +85°C unless otherwise noted.

Specifications subject to change without notice.

TIMINGCHARACTERISTICS 1,2

Parameter

Limit

Unit

Comments

ns min

CE to SCLK Setup Time

ns min

SCLK High Pulsewidth

ns min

SCLK Low Pulsewidth

ns max

Data Access Time After SCLK Rising Edge

ns min

Data Setup Time Prior to SCLK Falling Edge

ns min

Data Hold Time After SCLK Falling Edge

ns min

CE to SCLK Hold Time

ns max

CE to SDO High Impedance

NOTES

1Guaranteed by design and characterization, not production tested.

2All input signals are specified with tr = tf = 5 ns (10% to 90% of V

DD) and timed from a voltage level of 1.6 V.

3All specifications apply for –35

°C to +85°C unless otherwise noted.

4Measured with the load circuit of Figure 2.

Specifications subject to change without notice.

(TA

3 = T

MIN to TMAX, VDD = 2.65 V to 2.9 V, unless otherwise noted. See Figure 1.)

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