UCD3138128 datasheet(9/80 Pages) TI

9 / 80 page

UCD3138128, UCD3138A64

www.ti.com

SLUSBZ8A – JUNE 2014 – REVISED SEPTEMBER 2014

8.3 Recommended Operating Conditions

Over operating free-air temperature range (unless otherwise noted)

MIN

TYP

MAX

UNIT

V33D

Digital power

3.0

3.3

3.6

V33DIO

Digital I/O power

3.0

3.3

3.6

V33A

Analog power

3.0

3.3

3.6

BP18

1.8 V digital power

1.6

1.8

2.0

Junction temperature

-40

125

°C

8.4 Thermal Information

THERMAL METRIC(1)

80-PIN QFN

UNIT

RθJA

Junction-to-ambient thermal resistance

47.8

RθJCtop

Junction-to-case (top) thermal resistance

7.8

RθJB

Junction-to-board thermal resistance

24.4

°C/W

ψJT

Junction-to-top characterization parameter

0.2

ψJB

Junction-to-board characterization parameter

24.0

RθJCbot

Junction-to-case (bottom) thermal resistance

N/A

(1)

For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

8.5 Electrical Characteristics

V33A = V33D = V33DIO = 3.3V; 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(1)

powered up but all ADC12 and EADC

6.3

sampling is disabled

All GPIO and communication pins are

I33DIO(1)

0.35

open

I33D(1)

ROM program execution

The device is in ROM mode with all

I33

DPWMs enabled and switching at 2

100

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 9)

AGND reference

0.5

Ω

IOFFSET

Input offset current (See Figure 9)

–5

μA

Input voltage = 0 V at AFE = 0

–16

Input voltage = 0 V at AFE = 1

–10

EADC Offset

Input voltage = 0 V at AFE = 2

–6

-6

Input voltage = 0 V at AFE = 3

–4

15.62

Sample Rate

MHz

Analog Front End Amplifier Bandwidth

100

MHz

(1)

Characterized by design and not production tested.

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