AD977/AD977A

–2–

REV. D

A Grade

B Grade

C Grade

Parameter

Min

Typ

Max

Min

Typ

Max

Min

Typ

Max

Unit

RESOLUTION

16

16

16

Bits

ANALOG INPUT

Voltage Range

±10 V, 0 V to 5 V, . . . (See Table II)

Impedance

See Table II

Sampling Capacitance

40

40

40

pF

THROUGHPUT SPEED

Complete Cycle

10

10

10

µs

Throughput Rate

100

100

100

kHz

DC ACCURACY

Integral Linearity Error

±3

±2.0

±3

LSB

1

Differential Linearity Error

–2

+3

–1

+1.75

±2

LSB

No Missing Codes

15

16

15

Bits

Transition Noise

2

1.0

1.0

1.0

LSB

Full-Scale Error

3, 4

±0.5

±0.25

±0.5

%

Full-Scale Error Drift

±7

±7

±7

ppm/

°C

Full-Scale Error

Ext. REF = 2.5 V

±0.5

±0.25

±0.5

%

Full-Scale Error Drift

Ext. REF = 2.5 V

±2

±2

±2

ppm/

°C

Bipolar Zero Error

3

Bipolar Ranges

±10

±10

±15

mV

Bipolar Zero Error Drift

Bipolar Ranges

±2

±2

±2

ppm/

°C

Unipolar Zero Error

3

Unipolar Ranges

±10

±10

±10

mV

Unipolar Zero Error Drift

Unipolar Ranges

±2

±2

±2

ppm/

°C

Recovery to Rated Accuracy

After Power-Down

5

2.2

µF to CAP

1

1

1

ms

Power Supply Sensitivity

± 5%

±8

±8

±8

LSB

AC ACCURACY

Spurious Free Dynamic Range

6

90

96

90

dB

7

Total Harmonic Distortion

6

–90

–96

–90

dB

Signal-to-(Noise+Distortion)

6

83

85

83

dB

–60 dB Input

27

28

27

dB

Signal-to-Noise

6

83

85

83

dB

Full Power Bandwidth

8

700

700

700

kHz

–3 dB Input Bandwidth

1.5

1.5

1.5

MHz

SAMPLING DYNAMICS

Aperture Delay

40

40

40

ns

Transient Response, Full-Scale Step

2

2

2

µs

Overvoltage Recovery

9

150

150

150

ns

REFERENCE

Internal Reference Voltage

2.48

2.5

2.52

2.48

2.5

2.52

2.48

2.5

2.52

V

Internal Reference Source Current

1

1

1

µA

External Reference Voltage Range

for Specified Linearity

2.3

2.5

2.7

2.3

2.5

2.7

2.3

2.5

2.7

V

External Reference Current Drain

Ext. REF = 2.5 V

100

100

100

µA

NOTES

±10 V input, one LSB is 305 µV.

error. For bipolar input ranges, the Full-Scale Error is the worst case of either the –Full Scale or +Full Scale code transition voltage errors. For unipolar input ranges, Full-Scale

Error is with respect to the +Full-Scale code transition voltage.

±10 V input.

× F

Specifications subject to change without notice.