AD7709BRU datasheet(5/32 Pages) AD

No de pièce	AD7709BRU

Description	16-Bit-ADC with Switchable Current Sources

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REV. A

Parameter

AD7709A,

AD7709BUnit

Test Conditions

LOGIC OUTPUTS (Excluding XTAL2)

VOH, Output High Voltage

2

VDD – 0.6

V min

VDD = 3 V, ISOURCE = 100

mA

VOL, Output Low Voltage

2

0.4

V max

VDD = 3 V, ISINK = 100

mA

VOH, Output High Voltage

2

4V min

VDD = 5 V, ISOURCE = 200

mA

VOL, Output Low Voltage

2

0.4

V max

VDD = 5 V, ISINK = 1.6 mA

Floating-State Leakage Current

±10

mA max

Floating-State Output Capacitance

±10

pF typ

Data Output Coding

Binary

Unipolar Mode

Offset Binary

Bipolar Mode

I/O PORT

VINL, Input Low Voltage

2

0.8

V max

VDD = 5 V

0.4

V max

VDD = 3 V

VINH, Input High Voltage

2

2.0

V min

VDD = 3 V or 5 V

Input Currents

±2

mA max

VIN = VDD

–70

mA max

VIN = GND, Typically –40

mA @ VDD = 5 V

and –20

mA at VDD = 3 V; Weak Pull-Ups on

the Logic Inputs

Input Capacitance

10

pF typ

All Digital Inputs

VOH, Output High Voltage

2

VDD – 0.6

V min

VDD = 3 V, ISOURCE = 100

mA

VOL, Output Low Voltage

2

0.4

V max

VDD = 3 V, ISINK = 100

mA

VOH, Output High Voltage

2

4V min

VDD = 5 V, ISOURCE = 200

mA

VOL, Output Low Voltage

2

0.4

V max

VDD = 5 V, ISINK = 1.6 mA

Floating-State Output Leakage Current

±10

mA max

Floating-State Output Capacitance

±10

pF typ

START-UP TIME

From Power-On

300

ms typ

From Standby Mode

1

ms typ

OSCPD = 0

From Power-Down Mode

300

ms typ

OSCPD = 1

POWER REQUIREMENTS

Power Supply Voltage

VDD – GND

2.7/3.6

V min/max

VDD = 3 V nom

4.75/5.25

V min/max

VDD = 5 V nom

Power Supply Currents

IDD Current

1.5

mA max

VDD = 3 V, 1.25 mA typ

1.75

mA max

VDD = 5 V, 1.45 mA typ

IDD (Low Power Mode)

7

mA max

B Grade, VDD = 3 V, Standby Mode

7

mA typ

A Grade, VDD = 3 V, Standby Mode

1.5

mA max

B Grade, VDD = 3 V, Power-Down Mode

1.5

mA typ

A Grade, VDD = 3 V, Power-Down Mode

26

mA max

B Grade, VDD = 5 V, Standby Mode

26

mA typ

A Grade, VDD = 5 V, Standby Mode

6.5

mA max

B Grade, VDD = 5 V, Power-Down Mode

6.5

mA typ

A Grade, VDD = 5 V, Power-Down Mode

IDD for One Conversion Second

107

5

mA typ

VDD = 3 V, Standby Mode

134

5

mA typ

VDD = 5 V, Standby Mode

NOTES

1Temperature Range –40

∞C to +85∞C.

2Guaranteed by design and/or characterization data on production release.

3Full-scale error applies to both positive and negative full scale.

4Simultaneous 50 Hz and 60 Hz rejection is achieved using 19.79 Hz update rate. Normal mode rejection in this case is 60 dB min.

5When the part is placed in power-down mode for a single conversion/second, at an update rate of 19.79 Hz, the current consumption is higher compared to when the

part is placed in standby mode as the crystal oscillator takes approximately 100 ms to begin clocking. The device will, therefore, use full current for the conversion

time and the 100 ms period required for the oscillator to begin clocking. However, if the conversion rate is lower, the current consumption will be reduced so that it

is worthwhile to use the power-down rather than the standby mode.

Specifications subject to change without notice.

AD7709

–5–

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