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ADS8519

SLAS462A – JUNE 2007 – REVISED MARCH 2008

ELECTRICAL CHARACTERISTICS (continued)

ADS8519I

ADS8519IB

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNIT

DC ACCURACY

INL

Integral linearity error

–3

3

–1.5

1.5

DNL

Differential linearity error

–2

2

–1

1

LSB

No missing codes

15

16

Bits

0.67

0.67

LSB

±10V range

Internal reference

–0.5

0.5

–0.25

0.25

Full-scale

%FSR

All other ranges

Internal reference

–0.5

–0.05

0.5

–0.5

–0.05

0.5

Full-scale error drift

Internal reference

±7

±7

ppm/

°C

±10V range

External reference

–0.05

0.003

0.05

–0.05

0.003

0.05

Full-scale

%FSR

All other ranges

External reference

–0.5

0.5

–0.5

0.5

Full-scale error drift

External reference

±2

±2

ppm/

°C

–4

4

–2

2

mV

Bipolar zero error drift

±2

±2

ppm/

°C

Unipolar zero

8.192V

–20

6

20

–20

6

20

mV

Unipolar zero error drift

±0.4

±0.4

ppm/

°C

Recovery to rated accuracy after

1

µF capacitor to CAP

1

1

ms

power down

Power supply sensitivity

–8

8

–8

8

LSB

AC ACCURACY

SFDR

Spurious-free dynamic range

95

100

97

100

THD

Total harmonic distortion

–96

–94

–98

–96

dB

87

91

90

92

dB

SINAD

Signal-to-(noise+distortion)

–60dB Input

30

32

dB

SNR

Signal-to-noise ratio

88

92

91

93

dB

500

500

kHz

SAMPLING DYNAMICS

Aperture delay

5

5

ns

Transient response

FS step

2

2

µs

150

150

ns

REFERENCE

Internal reference voltage

No load

4.076

4.096

4.116

4.076

4.096

4.116

V

Internal reference source current

1

1

µA

(must use external buffer)

Internal reference drift

8

8

ppm/

°C

External reference voltage range

2.5

4.096

4.1

2.5

4.096

4.1

V

for specified linearity

External reference current drain

External 4.096V ref.

100

100

µA

(2)

LSB means Least Significant Bit. For the ±10V input range, one LSB is 305

µV.

(3)

Typical rms noise at worst-case transitions and temperatures.

(4)

As measured with circuit shown in Figure 29 and Figure 30.

(5)

For bipolar input ranges, full-scale error is the worst case of –Full-Scale or +Full-Scale uncalibrated deviation from ideal first and last

code transitions, divided by the transition voltage (not divided by the full-scale range) and includes the effect of offset error. For unipolar

input ranges, full-scale error is the deviation of the last code transition divided by the transition voltage. It also includes the effect of

offset error.

(6)

All specifications in dB are referred to a full-scale ±10V input.

(7)

Full-power bandwidth is defined as the full-scale input frequency at which signal-to-(noise + distortion) degrades to 60dB.

(8)

Recovers to specified performance after 2 x FS input overvoltage.

Copyright © 2007–2008, Texas Instruments Incorporated

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