ADC12281 datasheet(5/16 Pages) NSC

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Absolute Maximum Ratings (Notes 1,

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltages (V

A,VD,VD I/O)

6.5V

A–VD|

≤100 mV

D I/O–VA,VD I/O–VD

≤300 mV

Voltage on Any Input or Output Pin

−0.3V to V

A +0.3V

Input Current at Any Pin (Note 3)

±25 mA

Package Input Current (Note 3)

±50 mA

Power Dissipation at T

A = 25˚C

See (Note 4)

ESD Susceptibility

Human Body Model (Note 5)

2500V

Machine Model (Note 5)

250V

Soldering Temperature, Infrared,

(10 sec.) (Note 6)

300˚C

Storage Temperature

−65˚C to +150˚C

Operating Ratings (Notes 1, 2)

Operating Temperature Range

−40˚C

≤ T

≤

+85˚C

Supply Voltage (V

A,VD)

+4.75V to +5.25V

Output Driver Supply Voltage (V

I/O)

+2.7V to V

REF Input

1.8V to 2.2V

CLOCK, CAL, PD, OE

−0.05V to V

D +0.05V

Ground Difference |AGND–DGND|

≤100 mV

Converter Electrical Characteristics

The following specifications apply for AGND = DGND = DGND I/O = 0V, V

A =VD =VD I/O = +5V, PD = +5V, VREF = +2.0V,

CLK = 20MHz,3VP-P at 50% duty cycle, CL = 25 pF/pin. After Auto-Cal. Boldface limits apply for TA =TJ =TMIN to TMAX;

all other limits T

A =TJ = 25˚C (Notes 7, 8, 9).

Symbol

Parameter

Conditions

Typical

(Note 10)

Limits

(Note 11)

Units

(Limits)

STATIC CONVERTER CHARACTERISTICS

Resolution with No Missing Codes

Bits (min)

INL

Integral Non-Linearity

±1.0

±2.5

LSB (max)

DNL

Differential Non-Linearity

±0.35

±0.9

LSB (max)

Full-Scale Error

±10

LSB (max)

Zero Error

±17

LSB (max)

DYNAMIC CONVERTER CHARACTERISTICS

Full Power Bandwidth

100

MHz

SNR

Signal-to-Noise Ratio

IN = 4.43 MHz, VIN = 2.0 VP-P

65.5

62.5

dB (min)

SINAD

Signal-to-Noise and Distortion

IN = 4.43 MHz, VIN = 2.0 VP-P

dB (min)

ENOB

Effective Number of Bits

IN = 4.43 MHz, VIN = 2.0 VP-P

10.5

Bits (min)

THD

Total Harmonic Distortion

IN = 4.43 MHz, VIN = 2.0 VP-P

−76

SFDR

Spurious Free Dynamic Range

IN = 4.43 MHz, VIN = 2.0 VP-P

REFERENCE AND ANALOG INPUT CHARACTERISTICS

Input Voltage Range

REF

V (max)

IN Input Capacitance

(CLK LOW)

(CLK HIGH)

REF

Reference Voltage (Note 14)

2.00

1.8

V (min)

2.2

V (max)

Reference Input Leakage Current

µA

Reference Input Resistance

Ω

DC and Logic Electrical Characteristics

The following specifications apply for AGND = DGND = DGND I/O = 0V, V

A =VD =VD I/O = +5V, PD = +5V, VREF = +2.0V,

CLK = 20MHz,3VP-P at 50% duty cycle, CL = 25 pF/pin. After Auto-Cal. Boldface limits apply for TA =TJ =TMIN to TMAX;

all other limits T

A =TJ = 25˚C (Notes 7, 8, 9).

Symbol

Parameter

Conditions

Typical

(Note 10)

Limits

(Note 11)

Units

(Limits)

CLOCK, CAL, PD, OE DIGITAL INPUT CHARACTERISTICS

Logical “1” Input Voltage

D = 5.25V

2.0

V (min)

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