AD7709BR datasheet(3/17 Pages) AD

部品番号	AD7709BR

部品情報	16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port

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メーカー	AD [Analog Devices]

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–3–

REV. PrA

January 2001

AD7709

PRELIMINARY TECHNICAL DATA

LOGIC INPUTS

All Inputs Except SCLK and XTAL1

VINL, Input Low Voltage

0.8

V max.

VDD = 5V

VINL, Input Low Voltage

0.4

V max.

VDD = 3V

VINH, Input High Voltage

2.0

V min.

VDD = 3V or 5V

SCLK Only (Schmitt Triggered Input)

VT(+)

1.4/3

V min/V max VDD = 5V

VT(-)

0.8/1.4

V min/V max VDD = 5V

VT(+)- VT(-)

0.4/0.85

V min/V max VDD = 5V

VT(+)

0.95/2.5

V min/V max VDD = 3V

VT(-)

0.4/1.1

V min/V max VDD = 3V

VT(+)-VT(-)

0.4/0.85

V min/V max VDD = 3V

XTAL1 Only

VINL, Input Low Voltage

0.8

V max.

VDD = 5V

VINH, Input High Voltage

3.5

V min.

VDD = 5V

VINL, Input Low Voltage

0.4

V max.

VDD = 3V

VINH, Input High Voltage

2.5

V min.

VDD = 3V

Input Currents

±10

µA max.

VIN = 0V or VDD

Input Capacitance

10

pF typ.

All Digital Inputs

LOGIC OUTPUTS (Excluding XTAL2)

VOH, Output High Voltage

VDD- 0.6

V min.

VDD = 3V, ISOURCE = 100µA

VOL, Output Low Voltage

0.4

V max.

VDD = 3V, ISINK = 100µA

VOH, Output High Voltage

4

V min.

VDD = 5V, ISOURCE = 200µA

VOL, Output Low Voltage

0.4

V max.

VDD = 5V, ISINK = 1.6mA

Floating State Leakage Current

±10

uA max.

Floating State Output Capacitance

±10

pF typ.

Data Output Coding

Binary

Unipolar Mode

Offset Binary

Bipolar Mode

EXCITATION CURRENT SOURCES

I1 and I2 Output Current

200

µA nom.

I3 Output Current

25

µA nom.

Initial Tolerance at 25°C

±10

% typ.

Drift

20

ppm/°C typ.

Initial Current Matching at 25°C

± 1

%

Matching between I1 and I2

Drift Matching

1

ppm/°C typ.

Line Regulation (VDD)

T B D

nA/V max.

VDD = 5V±10%

Load Regulation

T B D

nA/V max.

Output Compliance

AVDD-0.5

V max.

Low-Side Power Switches (SW1 and SW2)

Ron

5

Ω typ

VDD = 5V

7

Ω typ

VDD = 3V

Allowable Current

20

mA max

Per Switch

SYSTEM CALIBRATION

Full-Scale Calibration Limit

1.05 X FS

V max.

Zero-Scale Calibration Limit

-1.05 X FS

V min.

Input Span

0.8 X FS

V min.

2.1 X FS

V max.

START UP TIME

From Power-On

500

msec typ.

From Idle Mode

1

msec. typ.

From Power-Down Mode

1

msec. typ.

500

msec. typ.

Osc. powered down

POWER REQUIREMENTS

Power Supply Voltages

VDD - GND

2.7/3.6

V min/max

VDD = 3V nom.

4.5/5.5

V min/max

VDD = 5V nom.

PARAMETER

B Grade

Units

Test Conditions

同様の部品番号 - AD7709BR

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