WM0831LID データシートの表示（PDF） - Wolfson Microelectronics plc

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WM0831LID

8-Bit ADCs with Serial Interface and Differential or Dual Inputs

Wolfson Microelectronics plc 

WM0831, WM0832

Electrical Characteristics (3.3V)

Vcc = 3.3V, fCLK = 250KHz, TA = TMIN to TMAX, tr = tf = 20 ns, unless otherwise stated.

PARAMETER

SYMBOL TEST CONDITIONS

MIN

Digital Inputs

High level output voltage

VOH

VCC = 3V, IOH = -360 µA

2.4

VCC = 3 V, IOH = -10 µA

2.8

Low level output voltage

VOL

VCC = 3V, IOH = 1.6 mA

High level input current

IIH

VIH = 3.6 V

Low level input current

IIL

VIL = 0 V

High level output (source)

IOH

VOH = 0 V, TA = 25oC

6.5

current

Low level output (sink) current IOL

VOL = 0V, TA = 25oC

8

High impedance-state

IOZ

VO = 3.3V, TA = 25oC

output current (DO)

VO = 0 V, TA = 25oC

Input capacitance

CI

Output capacitance

Co

Converter and Multiplexer

Total unadjusted error

TUE VREF = 3.3 V. (note 7)

Differential Linearity

(note 8)

8

Supply voltage variation error Vs(error) VCC = 3 V to 3.6 V

Common mode error

Differential mode

Common mode input voltage VICR (note 9)

GND-0.05

range

VCC+0.05

Standby input leakage

II(stdby) On-channel VI =3.3V at ON ch.

current (note 10)

Off-channel VI =0 V at OFF ch.

On-channel VI =0 V at ON ch.

Off-channel VI =3.3V at OFF ch.

Conversion time

tconv Excluding MUX addressing time

TYP

0.005

-0.005

15

16

0.01

-0.01

5

5

±1/16

±1/16

MAX

0.4

1

-1

3

-3

±1

±1/4

±1/4

1

-1

-1

1

8

Reference Inputs

Input resistance to

reference ladder

Total device

Supply current WM0831

Supply current WM0832

Timing Parameters

Setup time, CS low or

WM0832 data valid before

clock

Hold time, WM0832 data

valid after clock

Propagation delay time,

output data after clock

Output disable time, DO

after CS

Ri(REF) Can only be tested for WM0831 1.3

ICC

ICC

( note 11)

tsu

350

th

90

MSB data first. CL = 100 pF

tpd

LSB data first. CL = 100 pF

tdis

CL = 10 pF, RL = 10 kΩ

CL = 100 pF, RL = 2 kΩ

2.4

5.9

0.2 0.75

1.5

2.5

200

500

80

200

80

125

250

UNIT

V

V

V

µA

µA

mA

mA

µA

µA

pF

pF

LSB

Bits

LSB

LSB

V

µA

µA

µA

µA

clock

periods

kΩ

mA

mA

ns

ns

ns

ns

ns

ns

Wolfson Microelectronics

5

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