ADUCM350 datasheet(8/41 Pages) AD

8 / 41 page

Data Sheet

ADuCM350

Rev. A | Page 7 of 40

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

CapDAC Resolution

0.1

Output Noise

Peak-to-Peak

Codes

RMS

1.3

Codes

DFT-BASED IMPEDANCE MEASUREMENTS

Table 9. DFT-Based Impedance Measurements1

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

IMPEDANCE

Accuracy2

Magnitude

0.33

Standard deviation as a percent of Z

Phase

0.17

Degrees

Standard deviation of Z

Precision3

Magnitude

0.17

Standard deviation as a percent of Z

Phase

0.08

Degrees

Standard deviation of Z

For a Z of 181 Ω (0.02% tolerant resistor). Excitation frequency = 20 kHz, sine amplitude = 9 mVRMS, RCAL = 1 kΩ, RTIA = 7.5 kΩ, CTIA = 220 pF. Measurements at 25°C. Single

DFT measurement.

Device-to-device repeatability for 1000 devices.

Single device, repeatable measurements.

DIGITAL PLATFORM

Digital LDO

Table 10. Digital LDO Specifications

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

OUTPUT VOLTAGE

1.71

1.8

1.89

Measured with a CLOAD = 0.47 µF,

measured with a 10 mA load current on

DVDD

DROPOUT

150

200

10 mA load applied, no AFE blocks

enabled

REGULATION

Line

1.4

mV/V

10 mA load current on DVDD

Load

0.41

mV/mA

0 mA to 10 mA load current

POWER-UP TIME

µs

Time taken from LDO enable to when LDO

voltage is within specification, CLOAD =

0.47 µF, regulator unloaded

Low Power LDO

Table 11. Low Power LDO Specifications

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

OUTPUT VOLTAGE

1.71

1.8

1.89

REGULATION

Line

0.45

mV/V

VCCM = 2.0 V to 3.6 V

Load

28.5

mV/mA

0 µA to 100 µA load

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