AD7889 datasheet(3/40 Pages) AD

3 / 40 page

Data Sheet

AD7879/AD7889

Rev. D | Page 3 of 40

SPECIFICATIONS

VCC = 1.6 V to 3.6 V, TA = −40°C to +85°C, unless otherwise noted.

Table 1.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

DC ACCURACY

Resolution

Bits

No Missing Codes

Bits

Integral Nonlinearity (INL)1

±3

LSB

LSB size = 390 µV

Differential Nonlinearity (DNL)1

LSB size = 390 µV

Negative DNL

−0.99

LSB

Positive DNL

LSB

Offset Error1, 2

±2

±6

LSB

Gain Error1, 2

±4

LSB

Noise3

µV rms

Power Supply Rejection3

Internal Clock Frequency

MHz

Internal Clock Accuracy

1.8

2.2

MHz

SWITCH DRIVERS

On Resistance1

Y+, X+

Ω

Y−, X−

Ω

ANALOG INPUTS

Input Voltage Range

DC Leakage Current

±0.1

µA

Input Capacitance

Accuracy

0.3

TEMPERATURE MEASUREMENT

Temperature Range

−40

+85

°C

Resolution

0.3

°C

Accuracy2

±2

°C

Calibrated at 25°C

BATTERY MONITOR

Input Voltage Range

0.5

Input Impedance3

kΩ

Accuracy

Uncalibrated accuracy

LOGIC INPUTS (DIN, SCL, CS, SDA, GPIO)

Input High Voltage, V

INH

0.7 × V

Input Low Voltage, V

INL

0.3 × V

Input Current, I

0.01

µA

IN = 0 V or VCC

Input Capacitance, C

LOGIC OUTPUTS (DOUT, GPIO, SCL, SDA, INT)

Output High Voltage, V

CC − 0.2

Output Low Voltage, V

0.4

Floating State Leakage Current

±0.1

µA

Floating State Output Capacitance2

CONVERSION RATE3

Conversion Time

9.5

µs

Including 2 µs of acquisition time, median

and averaging (MAV) filter off; 2 µs of add-

itional time is required if the MAV filter is on

Throughput Rate

105

kSPS

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