AS1524 查看數據表（PDF） - austriamicrosystems AG

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AS1524

150ksps, 12-Bit, 1-Channel Pseudo/True-Differential and 2-Channel Single-Ended ADCs

austriamicrosystems AG 

AS1524/AS1525

Datasheet - Electrical Characteristics

6 Electrical Characteristics

VDD = +2.7 to +5.25V, VREF = +2.5V, 4.7µF Capacitor at REF; fSCLK = 8MHz (50% Duty Cycle); AIN- = GND (AS1524)

TAMB = TMIN to TMAX (unless otherwise specified). Typical Values at TAMB = +25ºC. Unipolar Mode (AS1524).

Table 4. Electrical Characteristics

Symbol

Parameter

Condition

Min Typ Max Unit

DC Accuracy

Resolution

12

Bits

INL

Relative Accuracy

±1.0 LSB

DNL

Differential Non-Lineraity No Missing Codes Over Temperature -0.99

+1.0 LSB

Offset Error

±1

±4 LSB

Gain Error 1

±1

±4 LSB

Gain Temp Coefficient

±0.3

ppm/ºC

Offset Temp Coefficient

±0.3

ppm/ºC

Channel-to-Channel Offset

Match

±0.1

LSB

Channel-to-Channel Gain

Match

±0.1

LSB

Dynamic Specifications – (fIN (sinewave) = 10kHz, VIN = 2.5VP-P, 150ksps, fSCLK = 8MHz (50% duty cycle), AIN- =

GND (AS1524)

SINAD Signal-to-Noise Plus Distortion

72.5

dB

THD

Total Harmonic Distortion (to

the 5th Harmonic)

-79.5

dB

SFDR Spurious-Free Dynamic Range

84

dB

Full Power Bandwidth

-3dB Point

20

MHz

Full Linear Bandwidth

-0.1dB Point

400

kHz

Conversion Rate

tCONV

Conversion Time

Exclusive of tACQ

3.3 3.7

µs

tACQ Track/Hold Acquisition Time

1.4

µs

Aperture Delay

30

ns

fSCLK Max Serial Clock Frequency

8

MHz

Serial Clock Duty Cycle

30

70

%

Analog Input

VIN Range 2

Unipolar

Bipolar

0

-VREF/2

VREF

V

VREF/2

Input Leakage Current

No Channel Selected or Conversion

Halted

±0.01 ±1

µA

Input Capacitance

Track Mode

Hold Mode

20

pF

5

pF

External Reference Input

VREF

VIN Range

1.0

VDD +

50mV

V

VREF = +2.5V @ 150ksps

11

25

IREF

Input Current

VREF = +4.096V @ 150ksps

19

µA

Acquisition Between Conversions

0

+2

+5

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