TLC32040C, TLC32040I, TLC32041C, TLC32041I

ANALOG INTERFACE CIRCUITS

SLAS014E – SEPTEMBER 1987 – REVISED MAY 1995

21

POST OFFICE BOX 655303

A/D channel signal-to-distortion ratio

PARAMETER

TEST CONDITIONS

Av = 1†

Av = 2†

Av = 4†

UNIT

PARAMETER

(see Note 7)

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

VI = – 6 dB to – 0.1 dB

58

>58§

>58§

VI = – 12 dB to – 6 dB

58

58

>58§

VI = – 18 dB to – 12 dB

56

58

58

VI = – 24 dB to – 18 dB

50

56

58

A/D channel signal-to-distortion ratio

VI = – 30 dB to – 24 dB

44

50

56

dB

VI = – 36 dB to – 30 dB

38

44

50

VI = – 42 dB to – 36 dB

32

38

44

VI = – 48 dB to – 42 dB

26

32

38

VI = – 54 dB to – 48 dB

20

26

32

D/A channel signal-to-distortion ratio

PARAMETER

TEST CONDITIONS

MIN

MAX

UNIT

PARAMETER

(see Note 7)

MIN

MAX

UNIT

VI = – 6 dB to 0 dB

58

VI = – 12 dB to – 6 dB

58

VI = – 18 dB to – 12 dB

56

VI = – 24 dB to – 18 dB

50

D/A channel signal-to-distortion ratio

VI = – 30 dB to – 24 dB

44

dB

VI = – 36 dB to – 30 dB

38

VI = – 42 dB to – 36 dB

32

VI = – 48 dB to – 42 dB

26

VI = – 54 dB to – 48 dB

20

gain and dynamic range

PARAMETER

TEST CONDITIONS

MIN

TYP‡

MAX

UNIT

Absolute transmit gain tracking error

while transmitting into 600

Ω

– 48-dB to 0-dB signal range,

See Note 8

±0.05 ±0.15

dB

Absolute receive gain tracking error

– 48-dB to 0-dB signal range,

See Note 8

±0.05 ±0.15

dB

Absolute gain of the A/D channel

Signal input is a – 0.5-dB,

1-kHz sinewave

0.2

dB

Absolute gain of the D/A channel

Signal input is a 0-dB,

1-kHz sinewave

– 0.3

dB

power supply rejection and crosstalk attenuation

PARAMETER

TEST CONDITIONS

MIN

TYP‡

MAX

UNIT

VCC + or VCC – supply voltage

f = 0 to 30 kHz

Idle channel, supply signal at 200 mV p-p

30

dB

CC +

CC

yg

rejection ratio, receive channel

f = 30 kHz to 50 kHz

,y

g

measured at DR (ADC output)

45

dB

VCC + or VCC – supply voltage

rejection ratio transmit channel

f = 0 to 30 kHz

Idle channel, supply signal at 200 mV p-p

30

dB

rejection ratio, transmit channel

(single ended)

f = 30 kHz to 50 kHz

,y

g

measured at OUT +

45

dB

Crosswalk attenuation, transmit-to-receive (single ended)

80

dB

† Av is the programmable gain of the input amplifier.

‡ All typical values are at TA = 25°C.

§ A value > 58 is overrange and signal clipping occurs.

NOTES:

7. The test condition Vin is a 1-kHz input signal with an 8-kHz conversion rate (0 dB relative to Vref). The load impedance for the DAC

is 600

Ω.

8. Gain tracking is relative to the absolute gain at 1 kHz and 0 dB (0 dB relative to Vref).