7872RPFS datasheet(3/11 Pages) MAXWELL

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All data sheets are subject to change without notice

14-Bit A/D Converter

7872

5.21.02 Rev 4

TABLE 3. 7872 DC ELECTRICAL CHARACTERISTICS FOR DYNAMIC PERFORMANCE 1

DD = 5 V ± 5%, VSS = -5 V ± 5%, AGND = DGND = 0 V,

CLK = 2 MHZ EXTERNAL, fSAMPLE = 83 KHZ, -55 TO 125

°C UNLESS OTHERWISE SPECIFIED)

1. V

IN = ± 3 V. Guaranteed by design.

PARAMETER

SYMBOL

SUBGROUPS

MIN

TYP

MAX

UNIT

Signal to Noise Ratio V

IN = 10kHz Sine Wave, TMIN to

MAX;

SNR is typically 82dB for V

IN < 41.5kHz

2. SNR calculation includes distortion and noise components.

SNR

4, 5, 6

Total Harmonic Distortion V

IN = 10kHz Sine Wave

THD

4, 5, 6

-86

Peak Harmonic or Spurious Noise

4, 5, 6

-86

Intermodulation Distortion

Second Order Terms: f

a = 9 kHz, fb = 9.5 kHz, fSAMPLE

= 50 kHz

Third Order Terms: f

a = 9 kHz, fb = 9.5 kHz, fSAMPLE=

50 kHz

IMD

4, 5, 6

-86

Track/Hold Acquisition Time

4, 5, 6

µ s

TABLE 4. 7872 DC ELECTRICAL CHARACTERISTICS FOR ACCURACY

DD = 5V ± 5%, VSS = -5 V ± 5%, TA = -55 TO 125 ° C UNLESS OTHERWISE SPECIFIED)

PARAMETER

SYMBOL

SUGROUPS

MIN

TYP

MAX

UNIT

Resolution

1, 2, 3

Bits

Resolution for Which No Missing Codes are Guaran-

teed

1, 2, 3

Bits

Integral Nonlinearity @ 25 °C

1, 2, 3

±1

LSB

Integral Nonlinearity T

MIN to TMAX

1, 2, 3

±2

LSB

Bipolar Zero Error

1, 2, 3

±12

LSB

Positive Gain Error 1

1. Measured with respect to internal reference.

1, 2, 3

±12

LSB

Negative Gain Error 1

1, 2, 3

±12

LSB

TABLE 5. 7872 DC ELECTRICAL CHARACTERISTICS FOR ANALOG INPUT

DD = 5V ± 5%, VSS = -5 V ± 5%, TA = -55 TO 125 ° C UNLESS OTHERWISE SPECIFIED)

PARAMETER

SYMBOL

SUBGROUPS

MIN

MAX

UNITS

Input Voltage Range

1, 2, 3

-3

Input Current

1, 2, 3

-500

500

µ A

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