ADS8328IBPW datasheet(7/50 Pages) TI

7 / 50 page

ADS8327

ADS8328

www.ti.com

SLAS415E

– APRIL 2006 – REVISED JANUARY 2011

SPECIFICATIONS (continued)

TA = –40°C to 85°C, +VA = 4.5 V to 5.5 V, +VBD = 1.65 V to 5.5 V, VREF = 4.096 V, and fSAMPLE = 500 kHz, unless otherwise

noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

DYNAMIC CHARACTERISTICS

VIN = 4.096 VPP at 10 kHz

-96

THD

Total harmonic distortion (4)

VIN = 4.096 VPP at 100 kHz,

ADS8327/28IB

–95.7

VIN = 4.096 VPP at 100 kHz,

ADS8327/28I

–95.7

VIN = 4.096 VPP at 10 kHz

SNR

Signal-to-noise ratio

VIN = 4.096 VPP at 100 kHz

VIN = 4.096 VPP at 10 kHz

SINAD

Signal-to-noise + distortion

VIN = 4.096 VPP at 100 kHz

VIN = 4.096 VPP at 10 kHz

100

SFDR

Spurious-free dynamic range

VIN = 4.096 VPP at 100 kHz,

ADS8327/28IB

98.8

VIN = 4.096 VPP at 100 kHz,

ADS8327/28I

98.8

–3dB Small-signal bandwidth

MHz

CLOCK

Internal conversion clock frequency

10.9

12.6

MHz

Used as I/O clock only

SCLK External serial clock

MHz

As I/O clock and conversion clock

EXTERNAL VOLTAGE REFERENCE INPUT

VREF (REF+ – REF–)

5.5 V

≥ +VA ≥ 4.5 V

0.3

4.096

4.2

Input reference

VREF

range

(REF

–) – AGND

–0.1

0.1

Resistance (5)

Reference input

Ω

DIGITAL INPUT/OUTPUT

Logic family

—CMOS

VIH

High-level input voltage

5.5 V

≥ +VBD ≥ 4.5 V

0.65

× (+VBD)

+VBD + 0.3

VIL

Low-level input voltage

5.5 V

≥ +VBD ≥ 4.5 V

–0.3

0.35

× (+VBD)

Input current

VI = +VBD or BDGND

-50

Input capacitance

5.5 V

≥ +VBD ≥ 4.5 V,

VOH

High-level output voltage

+VBD

– 0.6

+VBD

IO = 100 mA

5.5 V

≥ +VBD ≥ 4.5 V,

VOL

Low-level output voltage

0.4

IO = 100 mA

Output capacitance

Load capacitance

Data format

—straight binary

POWER-SUPPLY REQUIREMENTS

+VBD

1.65

3.3

5.5

Power supply

voltage

+VA

4.5

5.5

500-kHz Sample rate

6.2

Supply current

NAP/Auto-NAP mode

0.3

0.5

Deep power-down mode

Buffer I/O supply current

500 kSPS

+VA = 5 V, +VBD = 5 V

38.5

Power dissipation

+VA = 5 V, +VBD = 1.8 V

25.4

TEMPERATURE RANGE

Operating free-air temperature

–40

+85

°C

(4)

Calculated on the first nine harmonics of the input frequency.

(5)

Can vary

±30%

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