UCD9080 datasheet(3/32 Pages) TI

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UCD9080

SLVS692A – SEPTEMBER 2006 – REVISED DECEMBER 2006

ELECTRICAL CHARACTERISTICS (continued)

These specifications are over recommended ranges of supply voltage and operating free-air temperature, unless otherwise

noted

PARAMETER

TEST CONDITIONS

MIN

NOM

MAX

UNIT

ANALOG INPUTS (MON1, MON2, MON3, MON4, MON5, MON6, MON7, MON8, ROSC)

VCC

Analog supply voltage

VSS = 0 V

1.8

3.6

VCC(min)

VCC minimum voltage when sampling

2.35

Internal voltage reference

2.5

V(R<1..8>)

Analog input voltage

External voltage reference

VCC

(VCC = 3.3 V used as reference)

Only one terminal can be selected at a time

CI(1)

Input capacitance

(MON1–MON8)

Input MUX ON resistance

0 V

≤ VAx ≤ VCC, V

CC = 3 V

2000

Ω

RI(1)

Ilkg

High-impedance leakage current

MON1–MON8

±50

REF2_5V = 1 for 2.5 V

VCC = 3 V

2.35

2.5

2.65

I(VREF+) ≤ I(VREF+)max

VREF+

Positive internal reference voltage output

REF2_5V = 0 for 1.5 V

VCC = 3 V

1.41

1.5

1.59

I(VREF+) ≤ I(VREF+)max

REF2_5V = 0, I(VREF+) ≤ 1 mA

2.2

VCC minimum voltage, Positive built-in

VCC(min)

REF2_5V = 1, I(VREF+) ≤ 0.5 mA

VREF+ + 0.15

reference active

REF2_5V = 1, I(VREF+) ≤ 1 mA

VREF+ + 0.15

Internal reference (2.5 V)

±6.8

±12

±17.4

V(acc)

Accuracy of voltage sampling from rails

External reference (3.3 V/VCC)

±0.2

±1.6

±6.8

Temperature coefficient of built-in

I(VREF+) is a constant in the range of

±100 ppm/°C

TREF+(1)

reference

0 mA

≤ I

(VREF+)≤ 1 mA, VCC = 3 V

DCO OPERATING PERIOD

t(PERIOD)

VCC = 3 V, TA = 25°C, ROSC = 100 kΩ

227

204

185

MISCELLANEOUS

Tretention

Retention of configuration parameters

TJ = 25°C

100

Years

POR, Brownout, Reset (see (2)(3))

td(BOR)

2000

µs

VCC(start)

0.7

×V(B_IT-)

V(B_IT–)

dVCC/dt

≤ 3 V/s

1.71

Brownout

Vhys(B_IT–)

130

180

Pulse length needed at RST pin to accept

t(reset)

µs

reset internally, VCC = 3 V

DIGITAL OUTPUTS (EN8/GPO1, GPO2, GPO3, GPO4, EN1, EN2, EN3, EN4, EN5, EN6, EN7, SDA)

IOH(max) = –1.5 mA,(4) VCC = 3 V

VCC – 0.25

VCC

VOH

High-level output voltage

IOH(max) = –6 mA,(5) VCC = 3 V

VCC – 0.6

VCC

IOH(max)= –1.5 mA,(4) VCC = 3 V

VSS

VSS + 0.25

VOL

VOL Low-level output voltage

IOH(max) = –6 mA,(5) VCC = 3 V

VSS

VSS + 0.6

Ilkg

High-impedance leakage current

VCC = 3 V

±50

(1)

Not production tested. Limits verified by design.

(2)

The current consumption of the brown-out module is already included in the ICC current consumption data.

(3)

During power up, device initialization starts following a period of td(BOR) after VCC = V(B_IT–) + Vhys(B_IT–).

(4)

The maximum total current, IOHmax and IOLmax, for all outputs combined, should not exceed ±12 mA to hold the maximum voltage drop

specified.

(5)

The maximum total current, IOHmax and IOLmax, for all outputs combined, should not exceed ±48 mA to hold the maximum voltage drop

specified.

The UCD9080 is compatible with 3.3-V IO ports of microcontrollers, TMS320™ DSP Family as well as ASICs.

The UCD9080 is available in a plastic 32-pin QFN package (RHB).

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