–3–

REV. D

AD977/AD977A

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

5

5

5

µs

Throughput Rate

200

200

200

kHz

DC ACCURACY

Integral Linearity Error

±3

±2.0

±3

LSB

1

Differential Linearity Error

–2

+3

–1

+1.75

±2LSB

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

±8LSB

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

1

1

1

MHz

–3 dB Input Bandwidth

2.7

2.7

2.7

MHz

SAMPLING DYNAMICS

Aperture Delay

40

40

40

ns

Transient Response, Full-Scale Step

1

1

1

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

1.2

1.2

1.2

mA

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.