WM2148CFT/V Просмотр технического описания (PDF) - Wolfson Microelectronics plc

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производитель

WM2148CFT/V

14-bit 8MSPS Analogue-To-Digital Converter

Wolfson Microelectronics plc 

Production Data

WM2148

ELECTRICAL CHARACTERISTICS

Electrical characteristics over recommended temperature range, AVDD = DVDD = 3.3V (unless otherwise noted)

PARAMETER

Power Supplies

Analogue Supply Current

Digital Supply Current

Power Consumption

Power Down Supply Current

(sum of all supply currents)

DC Characteristics

Resolution

Differential Nonlinearity

Integral Nonlinearity

Offset Error

Gain Error

AC Characteristics

Analogue Input Bandwidth

Total Harmonic Distortion

SYMBOL

AIDD

DIDD

P

IPD =

AIDD+DIDD

DNL

INL

THD

Signal to Noise Ratio

Signal to Noise plus Distortion

Spurious Free Dynamic Range

Effective Number of Bits

Reference Voltage

Bandgap Voltage

Temperature Coefficient

Supply Voltage Coefficient

VBG Input Impedance

Positive Reference Voltage

Negative Reference Voltage

Reference Voltage Difference

Analog Inputs

Positive Analogue Input Voltage

Negative Analogue Input Voltage

Input Voltage Difference

Input impedance

PGA Range

PGA Step Size

PGA Gain Error

Digital Inputs

Input LOW level

Input HIGH level

Input current

Input capacitance

SNR

SINAD

SFDR

ENOB

VBG

VREF+

VREFí

¨9REF

VIN+

VINí

¨9IN

ZIN

VIL

VIH

IIN

CIN

TEST CONDITIONS

AVDD = 3.6V

DVDD = 3.6V

AVDD = DVDD = 3.6V

Power down mode

CLK signal stopped

Best Fit

IN+ = IN-, 0dB gain

0 dB gain

FIN = 100kHz

FIN = 1MHz

FIN = 4MHz

FIN = 1MHz

FIN = 4MHz

FIN = 1MHz

FIN = 4MHz

FIN = 1MHz

FIN = 4MHz

Internal reference

External reference

VREF+ = VBG (1 + 2/3)

VREF+ = VBG (1 - 2/3)

¨9REF = VREF+ -

VREFí

¨9IN = VIN+ - VINí

MIN

14

70

69

73

11.2

1.425

0

0

- ¨9REF

0

2

TYP

81

5

270

20

± 0.6

±3

140

-81

-78

-77

72

71

70

70

80

80

11.5

1.5

40

200

40

2.5

0.5

2.0

25

1

5

MAX

90

10

360

±1

±5

0.3

1

1.575

AVDD

AVDD

¨9REF

7

± 0.25

0.8

±1

UNIT

mA

mA

mW

µA

bits

bits

bits

% of FSR

% of FSR

MHz

dB

dB

dB

dB

bits

V

ppm / °C

ppm / V

kΩ

V

V

V

V

V

V

kΩ

dB

dB

dB

V

V

µA

pF

WOLFSON MICROELECTRONICS LTD

PD Rev 1.1 February 2001

5

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