AD7709BRUZ Datasheet AD7709BRUZ, AD7709ARUZ-REEL7, AD7709BRUZ-REEL7 | P4-P6

REV. A

–3–

AD7709

SPECIFICATIONS

= 2.7 V to 3.6 V or 4.75 V to 5.25 V, REFIN(+) = 2.5 V; REFIN(–) = GND; GND = 0 V; XTAL1/XTAL2 =

32.768 kHz Crystal; all specifications T

MIN

to T

MAX

, unless otherwise noted.)

Parameter AD7709A, AD7709B Unit Test Conditions

ADC CHANNEL SPECIFICATION

Output Update Rate 5.4 Hz min 0.732 ms Increments

105 Hz max

ADC CHANNEL

No Missing Codes

16 Bits min 20 Hz Update Rate

Resolution 13 Bits p-p ± 20 mV Range, 20 Hz Update Rate

16 Bits p-p ± 2.56 V Range, 20 Hz Update Rate

Output Noise and Update Rates See Tables II to V

Integral Nonlinearity

± 30 ppm of FSR max Typically 2 ppm

FSR

REFIN

GAIN

¥21024.

Offset Error ± 3 mV typ

Offset Error Drift vs. Temperature ± 10 nV/∞C typ

Full-Scale Error

± 0.75 LSB typ B Grade, V

= 4 V

± 0.2 % of FS typ A Grade

Gain Drift vs. Temperature ± 0.5 ppm/∞C typ

Power Supply Rejection (PSR) 85 dB typ Input Range = ± 2.56 V

100 dB typ on ± 20 mV Range

ANALOG INPUTS

Differential Input Voltage Ranges

±¥1 024. REFIN

GAIN

V nom REFIN = REFIN(+) – REFIN(–)

GAIN = 1 to 128

ADC Range Matching ± 2 mV typ Input Voltage = 19 mV on All Ranges

Absolute AIN1–AIN4 Voltage Limits

GND + 100 mV V min

– 100 mV V max

AIN1–AIN4 Analog Input Current

DC Input Current

± 1 nA max

DC Input Current Drift ± 5 pA /∞C typ

Absolute AINCOM Voltage Limits

GND – 30 mV V min

+ 30 mV V max

AINCOM Analog Input Current Pseudo-Differential Mode of Operation

DC Input Current ± 125 nA/V typ Input Current Varies with Input Range

DC Input Current Drift ± 2 pA/V/∞C typ

Normal-Mode Rejection

2, 4

@ 50 Hz 100 dB min

50 Hz ± 1Hz, 16.65 Hz Update Rate, SF = 82

@ 60 Hz 100 dB min 60 Hz ± 1 Hz, 20 Hz Update Rate, SF = 68

Common-Mode Rejection

@ DC 100 dB typ Input Range = ± 2.56 V, AIN = 1 V

110 dB typ on ± 20 mV Range

@ 50 Hz

100 dB min 50 Hz ± 1 Hz, Range = ± 2.56 V, AIN = 1 V

@ 60 Hz

100 dB min 60 Hz ± 1 Hz, Range = ± 2.56 V, AIN = 1 V

REFERENCE INPUTS

(REFIN1 and REFIN2)

REFIN Voltage 2.5 V nom REFIN = REFIN(+) – REFIN(–)

REFIN Voltage Range

1V min

V max

Absolute REFIN Voltage Limits

GND – 30 mV V min

+ 30 mV V max

Average Reference Input Current 0.5 mA/V typ

Average Reference Input Current Drift ± 0.01 nA/V/∞C typ

Normal-Mode Rejection

2, 4

@ 50 Hz 100 dB min 50 Hz ± 1 Hz, SF = 82

@ 60 Hz 100 dB min 60 Hz ± 1 Hz, SF = 68

Common-Mode Rejection

@ DC 110 dB typ Input Range = ± 2.56 V, AIN = 1 V

@ 50 Hz 110 dB typ 50 Hz ± 1 Hz, Range = 2.56 V, AIN = 1 V

@ 60 Hz 110 dB typ 60 Hz ± 1 Hz, Range = 2.56 V, AIN = 1 V

See Notes on page 5.

REV. A

–4–

AD7709

Parameter AD7709A, AD7709B Unit Test Conditions

EXCITATION CURRENT SOURCES

(IEXC1, IEXC2, and IEXC3)

Output Current

IEXC1, IEXC2 200 mA nom

IEXC3 25 mA nom

Initial Tolerance at 25∞C ±10 % typ

Drift 200 ppm/∞C typ

Initial Current Matching at 25∞C ± 2.5 % max B Grade, No Load

(between IEXC1 and IEXC2) ± 2.5 % typ A Grade, No Load

Drift Matching

(between IEXC1 and IEXC2) 20 ppm/∞C typ

Initial Current Matching at 25∞C ± 5% max B Grade, No Load

(between 8 ⫻ IEXC3 and

IEXC1/IEXC2) ± 5% typ A Grade, No Load

Drift Matching

(between 8 ⫻ IEXC3 and

IEXC1/IEXC2) 20 ppm/∞C typ

Line Regulation V

= 5 V ± 5%

IEXC1, IEXC2 1.25 mA/V typ A, B Grades

2.6 mA/V max B Grade

IEXC3 1 mA/V max B Grade

1 mA/V typ A Grade

Load Regulation 300 nA/V typ

Output Compliance V

– 0.6 V max

GND –30 mV V min

LOW-SIDE POWER SWITCHES

(SW1 and SW2)

3 W typ V

= 5 V, A and B Grade

5 W max B Grade

4.5 W typ V

= 3 V, A and B Grade

7 W max B Grade

Allowable Current

20 mA max Continuous Current per Switch

LOGIC INPUTS

All Inputs Except SCLK and XTAL1

INL

, Input Low Voltage 0.8 V max V

= 5 V

0.4 V max V

= 3 V

INH

, Input High Voltage 2.0 V min V

= 3 V or 5 V

SCLK Only (Schmitt-Triggered Input)

T(+)

1.4/2 V min/V max V

= 5 V

T(–)

0.8/1.4 V min/V max V

= 5 V

T(+)

– V

T(–)

0.3/0.85 V min/V max V

= 5 V

T(+)

0.95/2 V min/V max V

= 3 V

T(–)

0.4/1.1 V min/V max V

= 3 V

T(+)

– V

T(–)

0.3/0.85 V min/V max V

= 3 V

XTAL1 Only

INL

, Input Low Voltage 0.8 V max V

= 5 V

INH

, Input High Voltage 3.5 V min V

= 5 V

INL

, Input Low Voltage 0.4 V max V

= 3 V

INH

, Input High Voltage 2.5 V min V

= 3 V

Input Currents (except XTAL) ± 2 mA max V

= V

–70 mA max V

= GND, Typically –40 mA @ 5 V and

–20 mA at 3 V; Weak Pull-Ups on the

Logic Inputs

Input Capacitance 10 pF typ All Digital Inputs

(continued)

SPECIFICATIONS

REV. A

Parameter AD7709A,

AD7709

BUnit Test Conditions

LOGIC OUTPUTS (Excluding XTAL2)

, Output High Voltage

– 0.6 V min V

= 3 V, I

SOURCE

= 100 mA

, Output Low Voltage

0.4 V max V

= 3 V, I

SINK

= 100 mA

, Output High Voltage

4V min V

= 5 V, I

SOURCE

= 200 mA

, Output Low Voltage

0.4 V max V

= 5 V, I

SINK

= 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

INL

, Input Low Voltage

0.8 V max V

= 5 V

0.4 V max V

= 3 V

INH

, Input High Voltage

2.0 V min V

= 3 V or 5 V

Input Currents ± 2 mA max V

= V

–70 mA max V

= GND, Typically –40 mA @ V

= 5 V

and –20 mA at V

= 3 V; Weak Pull-Ups on

the Logic Inputs

Input Capacitance 10 pF typ All Digital Inputs

, Output High Voltage

– 0.6 V min V

= 3 V, I

SOURCE

= 100 mA

, Output Low Voltage

0.4 V max V

= 3 V, I

SINK

= 100 mA

, Output High Voltage

4V min V

= 5 V, I

SOURCE

= 200 mA

, Output Low Voltage

0.4 V max V

= 5 V, I

SINK

= 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

– GND 2.7/3.6 V min/max V

= 3 V nom

4.75/5.25 V min/max V

= 5 V nom

Power Supply Currents

Current 1.5 mA max V

= 3 V, 1.25 mA typ

1.75 mA max V

= 5 V, 1.45 mA typ

(Low Power Mode) 7 mA max B Grade, V

= 3 V, Standby Mode

7 mA typ A Grade, V

= 3 V, Standby Mode

1.5 mA max B Grade, V

= 3 V, Power-Down Mode

1.5 mA typ A Grade, V

= 3 V, Power-Down Mode

26 mA max B Grade, V

= 5 V, Standby Mode

26 mA typ A Grade, V

= 5 V, Standby Mode

6.5 mA max B Grade, V

= 5 V, Power-Down Mode

6.5 mA typ A Grade, V

= 5 V, Power-Down Mode

for One Conversion Second 107

mA typ V

= 3 V, Standby Mode

134

mA typ V

= 5 V, Standby Mode

NOTES

Temperature Range –40∞C to +85∞C.

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

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

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

When 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–

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P30 P31-P33

AD7709BRUZ

Mfr. #:

Buy AD7709BRUZ

Manufacturer:

Analog Devices Inc.

Description:

Analog to Digital Converters - ADC 16-Bit w/ Current Sources

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

AD7709BRUZ

AD7709BRUZ

Products related to this Datasheet