AD9545 datasheet(29/157 Pages) AD

29 / 157 page

Data Sheet

AD9545

Rev. A | Page 29 of 157

100

200

300

400

500

600

700

800

0.2

0.4

0.6

0.8

1.0

TIME (Seconds)

1.2

1.4

1.6

1.8

2.0

7.5mA MODE

15mA MODE

Figure 15. DC-Coupled, Single-Ended, 1 Hz Output Waveforms Using HCSL

7.5 mA and 15 mA Mode Terminated 50 Ω to GND per Figure 39;

Slew Rate: ~7 V/ns for 15 mA Mode; ~3.5 V/ns for 7.5 mA Mode

–1.2

–1.0

–0.8

–0.6

–0.4

–0.2

0.2

0.4

0.6

0.8

1.0

100

150

200

250

300

350

400

TIME (

μs)

HCSL, 7.5mA (SLEW RATE ~2.4V/ns)

CML, 7.5mA (SLEW RATE ~2.7V/ns)

HCSL, 15mA (SLEW RATE ~5.4V/ns)

CML, 15mA (SLEW RATE ~6V/ns)

Figure 16. 8 kHz Output Waveforms for Various Driver Settings;

HCSL Drivers Terminated 50 Ω to GND per Figure 32;

CML Drivers Terminated 50 Ω to 1.8 V per Figure 33

–1.0

–0.8

–0.6

–0.4

–0.2

0.2

0.4

0.6

0.8

1.0

100

120

140

160

180

200

TIME (ns)

HCSL, 7.5mA, 10MHz

CML, 7.5mA, 10MHz

HCSL, 15mA, 10MHz

CML, 15mA, 10MHz

Figure 17. 10 MHz Output Waveforms for Various Driver Settings;

HCSL Drivers Terminated 50 Ω to GND per Figure 32;

CML Drivers Terminated 50 Ω to 1.8 V per Figure 33

–1.0

–0.8

–0.6

–0.4

–0.2

0.2

0.4

0.6

0.8

1.0

012

345

678

TIME (ns)

HCSL, 15mA

CML, 15mA

Figure 18. 245.76 MHz Output Waveform for 15 mA Driver Settings;

HCSL Drivers Terminated 50 Ω to GND per Figure 32;

CML Drivers Terminated 50 Ω to 1.8 V per Figure 33

–1.0

–0.8

–0.6

–0.4

–0.2

0.2

0.4

0.6

0.8

1.0

TIME (ns)

HCSL, 15mA

CML, 15mA

Figure 19. 491.52 MHz Output Waveform for15 mA Driver Settings;

HCSL Drivers Terminated 50 Ω to GND per Figure 32;

CML Drivers Terminated 50 Ω to 1.8 V per Figure 33

200

400

600

800

1000

1200

1400

1600

1800

2000

100

10k

100k

10M

100M

FREQUENCY (Hz)

CML, DIFFERENTIAL, 15mA

CML, DIFFERENTIAL, 12.5mA

CML, DIFFERENTIAL, 7.5mA

HCSL, DIFFERENTIAL, 15mA

HCSL, DIFFERENTIAL, 12.5mA

HCSL, DIFFERENTIAL, 7.5mA

Figure 20. Differential Output Amplitude Waveforms;

HCSL Drivers Terminated 50 Ω to GND per Figure 32;

CML Drivers Terminated 50 Ω to 1.8 V per Figure 33

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