4–2

4.3

Electrical Characteristics Over Recommended Operating Free-Air

4.3.1

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VOH

High-level output voltage, DOUT

IO = 360 µA

2.4

4.6

V

VOL

Low-level output voltage, DOUT

IO = 2 mA

0.2

0.4

V

IIH

High-level input current, any digital input

VIH = 5 V

10

µA

IIL

Low-level input current, any digital input

VIL = 0.8 V

10

µA

Ci

Input capacitance

5

pF

Co

Output capacitance

5

pF

4.3.2

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VOH

High-level output voltage, DOUT

IO = 360 µA

2

V

VOL

Low-level output voltage, DOUT

IO = 2 mA

0.4

V

IIH

High-level input current, any digital input

VIH = 3.3 V

10

µA

IIL

Low-level input current, any digital input

VIL = 0.6 V

10

µA

Ci

Input capacitance

5

pF

Co

Output capacitance

5

pF

4.3.3

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

0 to 300 Hz

– 0.5

0.2

300 Hz to 3 kHz

– 0.35

0.2

Filter gain relative to gain at 1020 Hz

3.3 kHz

– 0.4

0.3

dB

Filter gain relative to gain at 1020 Hz

3.6 kHz

– 3

dB

4 kHz

– 40

≥ 4.4 kHz

– 74

NOTE 4: The filter gain outside of the passband is measured with respect to the gain at 1020 Hz. The analog input test

signal is a sine wave with 0 dB = 6 VI(PP) as the reference level for the analog input signal. The –1 dB pass

band is 0 to 3400 Hz for an 8-kHz sample rate. This pass band scales linearly with the sample rate.

4.3.4

4.3.4.1

ADC Signal-to-Noise (see Note 5)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VI = – 1 dB

86

VI = – 3 dB

80

84

VI = – 6 dB

76

81

Signal-to-noise ratio (SNR)

VI = – 9 dB

73

78

dB

VI = – 40 dB

42

47

VI = – 65 dB

17

22

VAUX = – 9 dB

73

78

NOTE 5: The test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output voltages are

referred to AVDD /2.