AS1520 查看數據表（PDF） - austriamicrosystems AG

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AS1520

10-Bit, Single-Supply, Low-Power, 400/300ksps, 8-Channel A/D Converters

austriamicrosystems AG 

AS1520/AS1521

Data Sheet - Electrical Characteristics

6 Electrical Characteristics

AS1520 Electrical Characteristics

VDD1 = VDD2 = VDD3 = +4.5 to +5.5V, COM = GND, fSCLK= 6.4MHz, 50% duty cycle, 16 clocks/conversion cycle

(400ksps), external +2.5V at REF, REFADJ = VDD1, TAMB = TMIN to TMAX (unless otherwise specified). Typ values at

TAMB = +25ºC.

Table 3. AS1520 Electrical Characteristics

Symbol

Parameter

Conditions

Min Typ Max Units

DC Accuracy 1

Resolution

10

Bits

INL

Relative Accuracy 2

-0.5

+0.5 LSB

DNL

Differential Nonlinearity

No missing codes over temperature

-1

+1 LSB

Offset Error

-3

+3 LSB

Gain Error 3

-3

+3 LSB

Gain-Error Temperature

Coefficient

±1.6

ppm/

°C

Channel-to-Channel

Offset Error Matching

±0.2

LSB

Dynamic Specifications: 100kHz sinewave input, 2.5Vp-p, 400ksps, 6.4MHz clock, bit RANGE (page 15) = 0,

pseudo-differential input mode

SINAD

Signal-to-Noise plus

Distortion Ratio

60

dB

THD Total Harmonic Distortion

Up to the 5th harmonic

70

dB

SFDR

Spurious-Free

Dynamic Range

70

dB

IMD Intermodulation Distortion

fIN1 = 99kHz, fIN2 = 102kHz

76

dB

Channel-to-Channel

Crosstalk 4

fIN = 200kHz, VIN = 2.5Vp-p

-85

dB

Full-Power Bandwidth

-3dB point

6

MHz

Full-Linear Bandwidth

SINAD > 68dB

450

kHz

Conversion Rate

tCONV

Conversion Time 5

2.5

µs

tACQ Track/Hold Acquisition Time

390 ns

tAD

Aperture Delay

7

ns

tAJ

Aperture Jitter

<50

ps

fSCLK

Serial Clock Frequency

0.5

6.4 MHz

Duty Cycle

40

60 %

Analog Inputs: CH0:CH7, COM

VCHx -

VCHy

(COM)

Input Voltage Range: Single-

Ended, Pseudo-Differential,

and Differential 6

Bit RANGE (page 15) = 1

Bit RANGE (page 15) = 0

0

-VREF

/2

VREF

+VREF V

/2

Multiplexer Leakage Current On/off leakage current, VCHx = 0 or VDD1 -1 ±0.001 +1 µA

Input Capacitance

18

pF

Internal Reference

VREF

TCVREF

CBYPREF

REF Output Voltage

REF Short-Circuit Current

REF Output Temperature

Coefficient

Load Regulation 7

Capacitive Bypass at REF

TAMB = +25ºC

0 to 1mA output load

2.48 2.50 2.52 V

30

mA

±25

ppm/

°C

1.2

4.0

mV/

mA

4.7

10 µF

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