AD5686R datasheet(4/31 Pages) AD

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AD5686R/AD5685R/AD5684R

Data Sheet

Rev. D | Page 4 of 31

A Grade1

B Grade1

Parameter

Min

Typ

Max

Min

Typ

Max

Unit

Test Conditions/Comments

REFERENCE OUTPUT

Output Voltage7

2.4975

2.5025

2.4975

2.5025

At ambient

Reference TC8, 9

ppm/°C

See the Terminology section

Output Impedance3

0.04

Ω

Output Voltage Noise3

µV p-p

0.1 Hz to 10 Hz

Output Voltage Noise

Density3

240

nV/√Hz

At ambient; f = 10 kHz, CL = 10 nF

Load Regulation Sourcing3

µV/mA

At ambient

Load Regulation Sinking3

µV/mA

At ambient

Output Current Load

Capability3

±5

VDD ≥ 3 V

Line Regulation3

100

µV/V

At ambient

Thermal Hysteresis3

125

ppm

First cycle

ppm

Additional cycles

LOGIC INPUTS3

Input Current

±2

µA

Per pin

VINL, Input Low Voltage

0.3 × VLOGIC

VINH, Input High Voltage

0.7 × VLOGIC

Pin Capacitance

LOGIC OUTPUTS (SDO)3

Output Low Voltage, VOL

0.4

ISINK = 200 μA

Output High Voltage, VOH

VLOGIC − 0.4

ISOURCE = 200 μA

Floating State Output

Capacitance

POWER REQUIREMENTS

VLOGIC

1.62

5.5

1.62

5.5

ILOGIC

µA

VDD

2.7

5.5

2.7

5.5

Gain = 1

VDD

VREF + 1.5

5.5

VREF + 1.5

5.5

Gain = 2

IDD

VIH = VDD, VIL = GND, VDD = 2.7 V to 5.5 V

Normal Mode10

0.59

0.7

0.59

0.7

Internal reference off

1.1

1.3

1.1

1.3

Internal reference on, at full scale

All Power-Down

Modes11

µA

−40°C to +85°C

µA

−40°C to +105°C

Temperature range: A and B grade: −40°C to +105°C.

DC specifications tested with the outputs unloaded, unless otherwise noted. Upper dead band = 10 mV and exists only when VREF = VDD with gain = 1 or when VREF/2 =

VDD with gain = 2. Linearity calculated using a reduced code range of 256 to 65,280 (AD5686R), 64 to 16,320 (AD5685R), and 12 to 4080 (AD5684R).

Guaranteed by design and characterization; not production tested.

Channel A and Channel B can have a combined output current of up to 30 mA. Similarly, Channel C and Channel D can have a combined output current of up to

30 mA up to a junction temperature of 110°C.

VDD = 5 V. The device includes current limiting that is intended to protect the device during temporary overload conditions. Junction temperature can be exceeded

during current limit. Operation above the specified maximum operation junction temperature may impair device reliability.

When drawing a load current at either rail, the output voltage headroom with respect to that rail is limited by the 25

Ω typical channel resistance of the output

devices. For example, when sinking 1 mA, the minimum output voltage = 25 Ω × 1 mA = 25 mV (see Figure 33).

Initial accuracy presolder reflow is ±750 µV; output voltage includes the effects of preconditioning drift. See the Internal Reference Setup section.

Reference is trimmed and tested at two temperatures and is characterized from −40°C to +105°C.

Reference temperature coefficient calculated as per the box method. See the Terminology section for further information.

Interface inactive. All DACs active. DAC outputs unloaded.

All DACs powered down.

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