PIC16LC773-04SLASHSP datasheet(165/200 Pages) MICROCHIP

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PIC16C77X

Advance Information

DS30275A-page 165

TABLE 15-9

A/D CONVERTER CHARACTERISTICS:

Param

No.

Sym

Characteristic

Min

Typ†

Max

Units

Conditions

A01

Resolution

—

12 bits

bit

Min. resolution for A/D is 1 mV,

VREF+ = AVDD = 4.096V,

VREF- = AVSS = 0V,

VREF-

≤ VAIN ≤ VREF+

A03

EIL

Integral error

—

+/-2 LSb

—

VREF+ = AVDD = 4.096V,

VREF- = AVSS = 0V,

VREF-

≤ VAIN ≤ VREF+

A04

EDL

Differential error

—

+2 LSb

-1 LSb

—

No missing codes to 12-bits

VREF+ = AVDD = 4.096V,

VREF- = AVSS = 0V,

VREF-

≤ VAIN ≤ VREF+

A06

EOFF

Offset error

—

less than

±2 LSb

—VREF+ = AVDD = 4.096V,

VREF- = AVSS = 0V,

VREF-

≤ VAIN ≤ VREF+

A07

EGN

Gain Error

—

+/- 2LSb

LSb

VREF+ = AVDD = 4.096V,

VREF- = AVSS = 0V,

VREF-

≤ VAIN ≤ VREF+

A10

—

Monotonicity

—

guaranteed(3)

——

AVSS

≤ VAIN ≤ VREF+

A20

VREF

Reference voltage

(VREF+ VREF-)

4.096

—

VDD +0.3V

Absolute minimum electrical spec to

ensure 12-bit accuracy.

A21

VREF+

Reference V High

(AVDD or VREF+)

VREF-—

AVDD

Min. resolution for A/D is 1 mV

A22

VREF-

Reference V Low

(AVSS or VREF-)

AVSS

—VREF+

Min. resolution for A/D is 1 mV

A25

VAIN

Analog input voltage

VREFL

—VREFH

A30

ZAIN

Recommended

impedance of analog

voltage source

——

2.5

Ω

A50

IREF

VREF input current

(Note 2)

——

µA

During VAIN acquisition.

Based on differential of VHOLD to VAIN.

To charge CHOLD see Section 11.0.

During A/D conversion cycle.

These parameters are characterized but not tested.

†

Data in “Typ” column is at 5V, 25

°C unless otherwise stated. These parameters are for design guidance only and are not

tested.

Note 1: When A/D is off, it will not consume any current other than minor leakage current. The power down current spec includes any

such leakage from the A/D module.

2: VREF current is from External VREF+, OR VREF-, or AVSS, or AVDD pin, whichever is selected as reference input.

3: The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.

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