AS1538-BTST 查看數據表（PDF） - austriamicrosystems AG

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AS1538-BTST

8/4-Channel, 12-Bit I²C Analog-to-Digital Converter

austriamicrosystems AG 

AS1538/AS1540

Data Sheet - Electrical Characteristics

6 Electrical Characteristics

Electrical Characteristics

+VDD = +2.7 to +5.25V, VREF = +2.5V external, SCL = 3.4MHz, TAMB = -40 to +85ºC (unless otherwise specified).

Table 3. Electrical Characteristics

Symbol

Analog Input

Parameter

Condition

Min Typ Max Unit

Fullscale Input Span

Absolute Input Range

Positive input, negative input

0

Positive input

-0.3

Negative Input

-0.3

VREF

V

+VDD

+ 0.3

V

+VDD

+ 0.3

V

Capacitance

Track Mode

Hold Mode

15

pF

8

ILEAK

Leakage Current

Static Performance

±0.1 ±1

µA

No Missing Codes

12

Bits

Integral Linearity Error

Differential Linearity Error

VREF = 2.5V, 1 LSB = 610µV

±0.75 ±1.5 LSB

±0.5 ±1 LSB

Offset Error

±0.5 ±6 LSB

Offset Error Match1

±0.2 ±1 LSB

Gain Error

±1 ±6 LSB

Gain Error Match1

±0.2 ±1 LSB

Power Supply Rejection

Dynamic Performance

1

mV

Throughput Frequency

50 kHz

AC Accuracy

Conversion Time

6.67 µs

THD

Total Harmonic Distortion 2

VIN = 2.5VP-P @ 10kHz

-75

dB

Signal-to-Noise Ratio

VIN = 2.5VP-P @ 10kHz

72

dB

Signal-to-Noise (+ Distortion)

Ratio

VIN = 2.5VP-P @ 10kHz

69.5

dB

Spurious-Free Dynamic Range

Voltage Reference Output

VIN = 2.5VP-P @ 10kHz

75

dB

Range

2.475 2.5 2.525 V

Internal Reference Drift

Output Impedance

30

ppm/ºC

30

Ω

Quiescent Current

Voltage Reference Input

440

µA

Range

Input Resistance

1

VDD

V

1

GΩ

Reference Input Current

PD = 01 Internal Ref. OFF, ADC ON

@ 50kSPS

4

µA

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