TLC32040C, TLC32040I, TLC32041C, TLC32041I

ANALOG INTERFACE CIRCUITS

SLAS014E – SEPTEMBER 1987 – REVISED MAY 1995

29

POST OFFICE BOX 655303

TYPICAL CHARACTERISTICS

Figure 8

50

40

20

10

0

30

010

70

60

80

A/D SIGNAL-TO-DISTORTION RATIO

vs

INPUT SIGNAL

Input Signal Relative to Vref – dB

1-kHz Input Signal With an

8-kHz Conversion Rate

Gain = 4X

Gain = 1X

–40

– 50

– 30

– 20

– 10

Figure 9

A/D GAIN TRACKING

(GAIN RELATIVE TO GAIN

AT 0-dB INPUT SIGNAL)

Input Signal Relative to Vref – dB

1-kHz Input Signal

8-kHz Conversion Rate

0

0.4

010

0.2

0.1

0.3

0.5

–40

– 0.1

– 0.2

– 0.3

– 0.4

– 0.5

–50

– 30

–20

– 10

Figure 10

–40

D/A CONVERTER SIGNAL-TO-DISTORTION RATIO

vs

INPUT SIGNAL

Input Signal Relative to Vref – dB

50

40

20

10

0

90

30

010

70

60

80

100

1-kHz Input Signal into 600

Ω

8-kHz Conversion Rate

–50

– 30

–20

– 10

Figure 11

– 0.2

– 0.4

– 0.6

– 0.8

–1

D/A GIAN TRACKING

vs

(GAIN RELATIVE TO GAIN

AT 0 0dB INPUT SIGNAL)

Input Signal Relative to Vref – dB

0

0.8

0.4

0.2

0.6

1.0

1-kHz Input Signal into 600

Ω

8-kHz Conversion Rate

–40

0

10

–50

– 30

–20

– 10

NOTE: Test conditions are VCC +, VCC –, VDD and within recommended operating conditions set clock f = 288 kHz ± 2%, and TA = 25°C.