AD7666

Rev. 0 | Page 3 of 28

SPECIFICATIONS

Table 2. –40°C to +85°C, AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V, unless otherwise noted

Parameter

Conditions

Min

Typ

Max

Unit

RESOLUTION

16

Bits

ANALOG INPUT

Voltage Range

0

V

Operating Input Voltage

–0.1

+3

V

–0.1

+0.5

V

Analog Input CMRR

65

dB

Input Current

500 kSPS Throughput

7.7

µA

Input Impedance1

THROUGHPUT SPEED

Complete Cycle

2

µs

Throughput Rate

0

500

kSPS

DC ACCURACY

Integral Linearity Error

–2.0

+2.0

LSB2

No Missing Codes

16

Bits

Differential Linearity Error

–1.0

+1.5

LSB

Transition Noise

0.7

LSB

±5

LSB

Unipolar Zero Error Temperature Drift

±0.5

ppm/°C

REF = 2.5 V

±0.08

% of FSR

Full-Scale Error Temperature Drift

±1.4

ppm/°C

Power Supply Sensitivity

AVDD = 5 V ± 5%

±2

LSB

AC ACCURACY

Signal-to-Noise

88

89.2

dB4

Spurious Free Dynamic Range

96

107

dB

Total Harmonic Distortion

–106

–96

dB

Signal-to-(Noise + Distortion)

88

89.1

dB

30

dB

–3 dB Input Bandwidth

12

MHz

SAMPLING DYNAMICS

Aperture Delay

2

ns

Aperture Jitter

5

ps rms

Transient Response

Full-Scale Step

750

ns

REFERENCE

Internal Reference Voltage

2.493

2.5

2.507

V

Internal Reference Temperature Drift

–40°C to +85°C

±3

±15

ppm/°C

Output Voltage Hysteresis

–40°C to +85°C

50

ppm

Long Term Drift

100

ppm/1000 Hours

Line Regulation

AVDD = 5 V ± 5%

±15

ppm/V

Turn-On Settling Time

5

ms

Temperature Pin

Voltage Output @ 25°C

300

mV

Temperature Sensitivity

1

mV/°C

Output Resistance

4

kΩ

External Reference Voltage Range

2.3

2.5

AVDD – 1.85

V

External Reference Current Drain

500 kSPS Throughput

120

µA