AS1527-BSOU datasheet(5/21 Pages) AMSCO

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AS1526/AS1527

Data Sheet - El ectrical Characte ristics

6 Electrical Characteristics

VDD = +2.7 to +3.6V, 73ksps, fSCLK = 2.1MHz (50% duty cycle); AS1526:4.7µF capacitor at REF, AS1527: external ref-

erence; VREF = 2.5V applied to REF; TAMB = TMIN to TMAX (unless otherwise specified).

Table 3. Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Units

DC Accuracy

Resolution

Bits

Relative Accuracy

±0.5

LSB

DNL

Differential Non-Linearity

No missing codes over temperature

±1

LSB

Offset Error

±2

LSB

Gain Error

±2

LSB

Gain Temperature Coefficient

±1

ppm/°C

Dynamic Specifications (10kHz sine-wave input, 0V to 2.5Vp-p, 73ksps, fSCLK =2.1MHz)

SINAD

Signal-to-Noise + Distortion

Ratio

THD

Total Harmonic Distortion

Up to the 5th harmonic

-70

SFDR

Spurious-Free Dynamic Range

Small-Signal Bandwidth

-3dB rolloff

2.5

MHz

Full-Power Bandwidth

2.5

MHz

Conversion Rate

tCONV

Conversion Time

5.5

7.5

µs

tACQ

Track/Hold Acquisition Time

1.5

µs

Throughput Rate

fSCLK = 2.1MHz

ksps

tAP

Aperture Delay

Figure 27 on page 13

7ns

Aperture Jitter

<50

Analog Input

Input Voltage Range

VREF

Input Capacitance

Internal Reference (AS1526 only)

REF Output Voltage

TAMB = +25ºC

2.47

2.50

2.53

REF Short-Circuit Current

REF Temperature Coefficient

AS1526

±30

ppm/°C

Load Regulation

0 to 0.2mA output load

0.35

CREFBYP

Capacitive Bypass at REF

4.7

µF

External Reference (VREF = 2.5V)

Input Voltage Range

1.00

VDD +

50mV

Input Current

100

150

µA

Input Resistance

REF Input Current in Shutdown

SHDNN = 0V

±0.01

µA

CREFBYP

Capacitive Bypass at REF

0.1

µF

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