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ADS8519

SLAS462 – JUNE 2007

ELECTRICAL CHARACTERISTICS (continued)

ADS8519I

ADS8519IB

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

No missing codes

15

16

Bits

Transition noise

(3)

0.67

0.67

LSB

±10 V range

–0.05

±0.5

0.05

–0.05

±0.5

0.05

Full-scale

Int. Ref.

%FSR

error

(4) (5)

All other ranges

–0.5

TBD

0.5

–0.5

TBD

0.5

Full-scale error drift

Int. Ref.

±7

±7

ppm/

°C

±10 V range

–0.05

0.05

–0.05

0.05

Full-scale

Ext. Ref.

%FSR

error

(4) (5)

All other ranges

–0.5

0.5

–0.5

0.5

Full-scale error drift

Ext. Ref.

±2

±2

ppm/

°C

Bipolar zero error

(4)

–4

4

–2

2

mV

Bipolar zero error drift

±2

±2

ppm/

°C

Unipolar zero

8.192 V

–20

20

–20

20

mV

error

(4)

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

102

97

102

dB

(6)

THD

Total harmonic distortion

–100

–94

–100

–96

dB

87

91

89

91

dB

SINAD

Signal-to-(noise+distortion)

–60-dB Input

30

32

dB

SNR

Signal-to-noise ratio

88

92

90

92

dB

Full-power bandwidth

(7)

500

500

kHz

SAMPLING DYNAMICS

Aperture delay

5

5

ns

Transient response

FS Step

2

2

μs

Overvoltage recovery

(8)

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

Ext. 4.096-V Ref.

100

100

μA

DIGITAL INPUTS

Logic levels

Low-level input voltage

–0.3

–0.3

V

High-level input voltage

V

Low-level input current

±10

±10

μA

High-level input current

±10

±10

μA

DIGITAL OUTPUTS

Data format (Serial 16-bits)

Data coding (Binary 2's

complement or straight binary)

Pipeline delay (Conversion results

only available after completed

conversion.)

(3)

Typical rms noise at worst case transitions and temperatures.

(4)

As measured with circuit shown in Figure 25 and Figure 26.

(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 ±10-V input.

(7)

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

(8)

Recovers to specified performance after 2 x FS input overvoltage.

Copyright © 2007, Texas Instruments Incorporated

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