AN221D04-DEVLP View Datasheet(PDF) - Unspecified

Part Name

Description

MFG CO.

AN221D04-DEVLP

Dynamically Reconfigurable FPAA With Enhanced I/O

Unspecified 

AN221E04 Datasheet – Dynamically Reconfigurable FPAA With Enhanced I/O

Input Differential Chopper Amplifier on and filter OFF

Parameter

Input Range

Gain Setting

Gain Accuracy

Gain Drift, (Temperature, Supply

Voltage and Time)

Chopper Frequency Clock Range

Symbol

Vina

Vdiffina

Ginamp

Min

Typ

Max

See analog input above

16

-

128

-

1.0

2.5

-

-

1.0

Fch

Fc/260100

-

>250

Equivalent Input Offset Voltage

Vos

-

<100

200

Offset Voltage Temperature

Coefficient

Voffsettc

-

Power Supply Rejection Ratio

PSRR

65

Common Mode Rejection Ratio

CMRR

-

Large Signal Harmonic Distortion

Dist

-

Input Frequency

0.5

2.0

-

-

102

-

-40

-

Fain

0

Fch/20 Fch/2

Input Resistance

Input Capacitance

Input Referred Noise Figure

Rin

10

Cin

-

NF

-

Signal-to Noise Ratio and

Distortion

SINAD

-

Spurious Free Dynamic Range

SFDR

-

-

5.0

0.09

-

75

-

74

-

Unit

Comment

Usable input range will be reduced

by the effective gain setting

%

%

KHz

µV

µV/°C

dB

dB

dB

KHz

Mohm

pF

µV/sqrtHz

dB

dB

Fc = master clock frequency

Set Fch as slow as possible

Fch > 250KHz will result in some

signal attenuation

Chopper stabilized amplifier

The maximum value of 200µV is

guaranteed by production test

This is a tester limitation

from -40°C to 125°C

d.c.

a.c. See graphs on page 18

0.4v p-p Differential input at

660Hz

Gain setting = 16

Fch=Chopper clock frequency

The chopper frequency and

input frequency should be

chosen such that subsequent

low pass filtering can remove the

chopper stage frequency

elements

Input to filter or chopper

Input cell Gain = 16

Applies to Audio frequency

range Chopper clock Fch =

250KHz

See graphical data on page 18

Input signal = 285 mV p-p

differential,

Audio frequency range

See graphical data on page 18

Input signal =100 mV p-p

differential

See graphical data on page 18

Input Differential Amplifier OFF and filter ON

Parameter

Input Range

Equivalent Input Offset

Symbol

Vina

Vdiffina

Vos

Min Typ Max

See analog input above

-

8

32

Offset Voltage Temperature

Coefficient

Input Frequency

Voffsettc

-

0.05 I 1.0 II

Fain

-

-

-

Unit

Comment

mV

mV/°C

MHz

Non-chopper stabilized input,

Filter corner frequency =470KHz

from -40°C to 125°C

I. measured at filter corner=470Khz

II. maximum at Filter corner=76KHz

Input filter frequency will define the

maximum frequency

Input filter is recommended to be

>30x higher than the max input

frequency, for 80dB distortion

performance

DS030100-U006a - 8 -

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