UCD3138ARMHT datasheet(13/83 Pages) TI

13 / 83 page

UCD3138A

www.ti.com

SLUSC66B – MARCH 2015 – REVISED MAY 2015

5.4

Electrical Characteristics

V33A = V33D = V33DIO = 3 V to 3.6 V; 1

μF from BP18 to DGND, TJ = –40°C to 125°C (unless otherwise noted)

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

SUPPLY CURRENT

Measured on V33A. The device is

I33A

powered up but all ADC12 and EADC

6.3

sampling is disabled

All GPIO and communication pins are

I33DIO

0.35

open

I33D

ROM program execution

I33D

Flash programming in ROM mode

The device is in ROM mode with all

I33

DPWMs enabled and switching at 2

105

MHz. The DPWMs are all unloaded.

ERROR ADC INPUTS EAP, EAN

EAP – AGND

–0.15

1.998

EAP – EAN

–0.256

1.848

Typical error range

AFE = 0

–256

248

AFE = 3

0.8

1.20

AFE = 2

1.7

2.30

EAP – EAN Error voltage digital resolution

AFE = 1

3.55

4.45

AFE = 0

6.90

9.10

REA

Input impedance (See Figure 5-5)

AGND reference

0.5

Ω

IOFFSET

Input offset current (See Figure 5-5)

–5

μA

Input voltage = 0 V at AFE = 0

–2

LSB

Input voltage = 0 V at AFE = 1

–2.5

2.5

LSB

EADC offset

Input voltage = 0 V at AFE = 2

–3

-3

LSB

Input voltage = 0 V at AFE = 3

–4

LSB

Sample Rate

MHz

Analog Front End Amplifier Bandwidth

100

MHz

Gain

See Figure 5-6

V/V

Minimum output voltage

EADC DAC

DAC range

1.6

VREF DAC reference resolution

10 bit, No dithering enabled

1.56

VREF DAC reference resolution

With 4 bit dithering enabled

97.6

μV

INL

–3.0

3.0

LSB

DNL

Does not include MSB transition

–2.1

1.6

LSB

DNL at MSB transition

–1.4

LSB

DAC reference voltage

1.58

1.61

Settling Time

From 10% to 90%

250

ADC12

IBIAS

Bias current for PMBus address pins

9.5

10.5

μA

Measurement range for voltage monitoring

2.5

Internal ADC reference voltage

–40°C to 125°C

2.475

2.500

2.525

–40°C to 25°C

–1.2

Change in Internal ADC reference from

25°C reference voltage(1)

25°C to 125°C

–2.6

(1)

As designed and characterized. Not 100% tested in production.

Specifications

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