ADC12451 datasheet(2/18 Pages) NSC

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Absolute Maximum Ratings (Notes12)

If MilitaryAerospace specified devices are required

please contact the National Semiconductor Sales

OfficeDistributors for availability and specifications

Supply Voltage (VCC e DVCC e AVCC)

65V

Negative Supply Voltage (Vb)

65V

Voltage at Logic Control Inputs

03V to (VCC a 03V)

Voltage at Analog Inputs

(VIN VREF)(Vb b03V) to (VCC a 03V)

AVCC-DVCC (Note 7)

03V

Input Current at any Pin (Note 3)

5mA

Package Input Current (Note 3)

20 mA

Power Dissipation at 25 C (Note 4)

875 mW

Storage Temperature Range

65 Cto a150 C

ESD Susceptability (Note 5)

2000V

Soldering Information

J Package (10 Seconds)

300 C

Operating Ratings (Notes12)

Temperature Range

TMIN s TA s TMAX

ADC12451CIJ

40 C s TA s a85 C

ADC12451CMJ

ADC12451CMJ883

55 C s TA s a125 C

DVCC and AVCC Voltage

(Notes67)

45V to 55V

Negative Supply Voltage (Vb)

45V to b55V

Reference Voltage

(VREF Notes67)

35V to AVCC a 50 mV

Converter Electrical Characteristics

The following specifications apply for VCC e DVCC e AVCC ea50V Vb eb50V VREF ea50V using S H input for

conversion control and fCLK e 35 MHz unless otherwise specified Boldface limits apply for TA e TJ e TMIN to TMAX all

other limits TA e TJ e 25 C (Notes 6 7 and 8)

Symbol

Parameter

Conditions

Typical

Limit

Units

(Note 9)

(Note 10 19)

(Limit)

STATIC CHARACTERISTICS

Positive Integral Linearity Error

After Auto-Cal (Notes 11

12)

LSB

Negative Integral Linearity Error

After Auto-Cal (Notes 11

12)

LSB

Positive or Negative Differential Linearity

After Auto-Cal (Notes 11

12)

Bits

Zero Error (Notes 12

13)

AZ e ‘‘0’’ fCLK e 175 MHz

LSB

After Auto-Cal Only

2 g30

LSB(max)

Positive Full-Scale Error (Note 12)

AZ e ‘‘0’’ fCLK e 175 MHz

LSB

Auto-Cal Only

15 g25

LSB(max)

Negative Full-Scale Error (Note 12)

AZ e ‘‘0’’ fCLK e 175 MHz

LSB

Auto-Cal Only

15 g30

LSB(max)

VIN

Analog Input Voltage

Vb b 005

V(min)

VCC a 005

V(max)

Power Supply Sensitivity

Zero Error (Note 14) AVCC e DVCC e 5V g5%

LSB

Full-Scale Error

VREF e 475V Vb eb5V g5%

LSB

Linearity Error

LSB

CREF

VREF Input Capacitance

CIN

Analog Input Capacitance

DYNAMIC CHARACTERISTICS

Bipolar Effective Bits (Note 17)

fIN e 1 kHz VIN e g485V

126

Bits

fIN e 2067 kHz VIN e g485V

126

119

Bits(min)

Unipolar Effective Bits (Note 17)

fIN e 1 kHz VIN e 485 Vp-p

118

Bits

fIN e 2067 kHz VIN e 485 Vp-p

118

111

Bits(min)

Bipolar Signal to Noise Ratio (Note 17)

fIN e 1 kHz VIN e g485V

fIN e 10 kHz VIN e g485V

fIN e 2067 kHz VIN e g485V

735

dB(min)

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