4–2

4.4

MCLK = 16.384 MHz, Fk = 8 (unless otherwise noted)

4.4.1

Digital Inputs and Outputs, Outputs Not Loaded

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

4.4.2

ADC Path Filter (see Note 3)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

20 Hz

– 0.5

– 0.15

0.2

200 Hz

– 0.5

0.03

0.15

300 Hz to 3 kHz

– 0.15

0

0.15

Filter gain relative to gain at 1020 Hz

3.3 kHz

– 0.35

– 0.5

0.3

dB

3.4 kHz

–1

– 0.6

– 0.1

4 kHz

–20

–14

≥ 4.6 kHz

–40

NOTE 3: 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 passband is

0 to 3400 Hz.

4.4.3

ADC Dynamic Performance

4.4.3.1

ADC Signal-to-Noise (see Note 4)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VI = – 1 dB

80

85

VI = – 9 dB

72

77

Signal-to-noise ratio (SNR)

VI = – 40 dB

40

45

dB

VI = – 65 dB

14

21

VI(AUXM, AUXP) = – 9 dB

72

78

NOTE 4: The test condition is the digital equivalent of a 1020 Hz input signal with an 8 kHz conversion rate. The load

impedance is 600

Ω. Input and output voltages are referred to VDD/2.

4.4.3.2

ADC Signal-to-Distortion (see Note 4)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VI = – 1 dB

80

92

VI = – 9 dB

80

94

Signal-to-total harmonic distortion (THD)

VI = – 40 dB

40

60

dB

VI = – 65 dB

15

40

VI(AUXM, AUXP) = – 9 dB

80

92

NOTE 4: The test condition is the digital equivalent of a 1020 Hz input signal with an 8 kHz conversion rate. The load

impedance is 600

Ω. Input and output voltages are referred to VDD/2.