PS9352AL2 datasheet(6/21 Pages) RENESAS

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PS9352AL2

Chapter Title

R08DS0129EJ0100 Rev.1.00

Page 6 of 19

Aug 24, 2015

ELECTRICAL CHARACTERISTICS (Tested with Sinc3 filter, 256 decimation ratio.)

(TYP.: TA = 25

C, VIN = VIN = 0 V, VDD1 = VDD2 = 5 V,

MIN., MAX.: refer to RECOMMENDED OPERATING CONDITIONS, unless otherwise specified)

Parameter

Symbol

Conditions

MIN.

TYP.

MAX.

Unit

Integral Non-linearity *3

INL

200 mV  VIN  200 mV

LSB

0.01

0.14

Differential Non-linearity *4

DNL

200 mV  VIN  200 mV

LSB

Input Offset Voltage *5

VOS

3

Input Offset Voltage Drift

vs. Temperature

dVOS/dTA

V/C

Input Offset Voltage Drift

vs. Supply Voltage

dVOS/dVDD1

0.1

mV/V

Internal Reference Voltage *6

VREF

320

Absolute Internal Reference

Voltage Tolerance

TA = 25

C

1

TA =

40 to 110C

3

Internal Reference Voltage Drift

vs. Temperature

dVREF/dTA

ppm/

C

Internal Reference Voltage Drift

vs. Supply Voltage

dVREF/dVDD1

0.2

mV/V

Input DC Common-Mode

Rejection Ratio *7

CMRRIN

Integral non-linearity (INL) is the maximum deviation between the ideal conversion line (best-fit line) and

measured points. The best-fit line is obtained by using the least-squares method from the differential input

voltage (VIN+

 VIN: VIN+ = 200 mV to 200 mV, VIN = 0 V) and the output data that is measured under the

circuit shown in Fig. 7 INL Test Circuit. INL is defined as the ratio (%) obtained by dividing [Half of the peak to

peak value of the deviation] by [full-scale differential input voltage 400 mV].

For example, if the differential input voltage is VIN+ =

200 mV to 200 mV, and the peak to peak value of the

deviation is 1.12 mV, Integral non-linearity is obtained as follows:

INL = 1.12 mV/(2

 400 mV) = 0.14%

And Input Full-Scale 640 mV (

320 to 320 mV) of PS9352AL2 is assigned 15 bits (215 = 32768).

Therefore, Least Significant Bit (LSB) is 19.5

V.

By LSB indication, above-mentioned INL is 1.12 mV/(2

 0.0195 mV) = 29 LSBs.

Differential non-linearity (DNL) is the difference between a measured code width and ideal 1 LSB in the ADC

transfer curve.

Input offset voltage (VOS) is a measured value after Sinc3 digital filter when the input voltage is 0 V (VIN+ = VIN- =

0 V).

Absolute Internal Reference Voltage Tolerance (GE) is the gap rate between the ideal conversion line slope

(Slope = 1) and a best-fit line slope that provided by the least-squares method from a real conversion level output

for the differential input voltage (VIN+

 VIN-: VIN+ = 200 mV to 200 mV, VIN- = 0 V).

Input DC Common-Mode Rejection Ratio (CMRRIN) is the ratio of the differential signal (VIN+ =

200 mV to 200

mV, VIN = 0 V) to the common-mode signal (VIN+ = VIN =

200 mV to 200 mV: Both input pins are connected).

CMRRIN is defined as follows,

CMRRIN (dB) = 20log (Vdo/Vco)

Vdo : Output voltage when the differential signal voltage input

Vco : Output voltage when the common-mode signal voltage input

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