4

7/12/00

SPT7935

THD

SNR

SINAD

20

30

40

50

60

70

80

100

101

102

THD, SNR, SINAD vs Input Frequency

Input Frequency (MHz)

SNR

THD

SINAD

SNR

THD

SINAD

20

30

40

50

60

70

80

10 0

101

102

THD, SNR, SINAD vs Sample Rate

Sample Rate (MSPS)

Note: Bias1 and Bias2 currents optimized for each sample rate.

56

58

60

62

64

66

68

70

025

70

Temperature (°C)

THD, SNR, SINAD vs Temperature

THD

SNR

SINAD

0

25

50

75

100

125

150

10 0

101

102

Power Dissipation vs Sample Rate

Sample Rate (MSPS)

Note: Bias1 and Bias2 optimized for each sample rate.

Bias 2 Voltage vs Bias 2 Current

0.60

0.65

0.70

0.75

0.80

0.85

0.90

0

3

6

9

12

15

18

IBias2 (

µA)

IBias2

VBias2

3

0.6975

6

0.7535

9

0.796

12

0.8295

15

0.8595

Bias 1 Voltage vs Bias 1 Current

2.0

2.2

2.4

2.6

2.8

3.0

3.2

3.4

0

30

60

90

120

150

180

IBias1 (

µA)

IBias1 VBias1

30

2.19

60

2.53

90

2.79

120

3.00

150

3.22

TYPICAL PERFORMANCE CHARACTERISTICS