ADUCM310 datasheet(7/28 Pages) AD

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ADuCM310

Data Sheet

Rev. A Page 6 of 27

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

BUFFERED VREF OUTPUTS

(BUF_VREF2.5x PINS)

Output Voltage

2.5

Accuracy

±5

A = 25°C, load = 0.4 mA

Reference Temperature Coefficient1

ppm/°C

100 nF capacitor required on both

outputs

Load Regulation

2.5

mV/mA

Output Impedance

Ω

A = 25°C

Load Current

1.2

Power Supply Rejection Ratio

IDAC CHANNEL SPECIFICATIONS5, 6

Voltage Compliance Range1

Output voltage compliance;

minimum compliance if IDACx set to

full scale, see Figure 15 to Figure 20

IDAC0, IDAC1, and IDAC2

0.4

DD −

200 mV

DD –

275 mV

IDAC4 and IDAC5

0.4

DD –

200 mV

IDAC3

0.5

DD −

450 mV

−3.7

−3.0

At −3.5 V, maximum sink current is

80 mA; pin voltage clamped to

−3.5 V, tolerance of clamping

voltage is ±200 mV

Reference Current Generator

Reference Current

0.38

Using internal reference, 0.1%,

≤5 ppm, 3.16 kΩ external resistor

IDAC Reference Current Shutdown

Threshold

0.76

If the external resistor (R

EXT) value

drops below 1.580 kΩ, IDAC output

currents disable

Temperature Coefficient1, 4

ppm/°C

Using internal reference;

Over Heat Shutdown

135

°C

Junction temperature

Resolution

IDAC0, IDAC1, IDAC4,and IDAC5

Bits

11-bit MSBs and 5-bit LSBs are

guaranteed monotonic

IDAC2

Bits

11-bit MSBs and 5-bit LSBs are

guaranteed monotonic

IDAC3

Bits

0 V to 2 V compliant range, 11-bit

MSBs and 5-bit LSBs are guaranteed

monotonic

IDAC3

Bits

−4.5 V to 0 V compliant range

Full-Scale Output

IDAC0 and IDAC1

100

IDAC4 and IDAC5

IDAC2

200

IDAC3

250

Current source

−80

Current sink

Integral Nonlinearity

−2.5

±1.5

LSB

11-bit

Noise Current

RMS noise; maximum bandwidth

setting, IDACxCON[5:2] = 0000b

IDAC0 and IDAC1

1.5

µA

Measured driving 10 Ω

IDAC4 and IDAC5

0.3

µA

Measured driving 100 Ω

IDAC2

µA

Measured driving 5 Ω

IDAC3

µA

Measured driving 5 Ω

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