PXAS30 datasheet(35/52 Pages) PHILIPS

35 / 52 page

Philips Semiconductors

Preliminary specification

XA-S3

XA 16-bit microcontroller

32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage (2.7 V–5.5 V),

I2C, 2 UARTs, 16 MB address range

2000 Dec 01

8-BIT MODE A/D CONVERTER DC ELECTRICAL CHARACTERISTICS

Tamb = 0 to +70°C for commercial, Tamb = –40 to +85°C for industrial, unless otherwise specified.

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

UNIT

SYMBOL

PARAMETER

TEST CONDITIONS

MIN

MAX

UNIT

AVDD

Analog supply voltage

2.7

3.3

AIDD

Analog supply current (operating)

Port 5 = 0 to AVDD

2.5

AIID

Analog supply current (Idle mode)

2.5

µA

AIPD

Analog supply current (Power-Down mode)

Commercial temperature range

100

µA

Industrial temperature range

150

µA

AVIN

Analog input voltage

AVSS –0.2

AVDD +0.2

RREF

Resistance between VREF+ and VREF–

125

225

Ω

CIA

Analog input capacitance

DLe

Differential non-linearity1, 2, 3

±1

LSB

ILe

Integral non-linearity1, 4

±1

LSB

OSe

Offset error1, 5

±2.5

LSB

Gain error1, 6

±1

Absolute voltage error1, 7

±3

LSB

MCTC

Channel-to-channel matching

±1

LSB

Crosstalk between inputs of port8

0 – 100 kHz

–60

NOTES:

1. Conditions: AVREF– = 0 V; AVREF+ = 3.07 V.

2. The differential non-linearity (DLe) is the difference between the actual step width and the ideal step width. See Figure 25.

3. The ADC is monotonic, there are no missing codes.

4. The integral non-linearity (ILe) is the peak difference between the center of the steps of the actual and the ideal transfer curve after

appropriate adjustment of gain and offset errors. See Figure 25.

5. The offset error (OSe) is the absolute difference between the straight line which fits the actual transfer curve (after removing gain error), and

the straight line which fits the ideal transfer curve. See Figure 25.

6. The gain error (Ge) is the relative difference in percent between the straight line fitting the actual transfer curve (after removing offset error),

and the straight line which fits the ideal transfer curve. Gain error is constant at every point on the transfer curve. See Figure 25.

7. The absolute voltage error (Ae) is the maximum difference between the center of the steps of the actual transfer curve of the non-calibrated

ADC and the ideal transfer curve.

8. This should be considered when both analog and digital signals are input simultaneously to Port 5. Parameter is guaranteed by design.

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