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Characteristics and Specifications 3
U2761A User’s Guide 97
Product Specifications and Characteristics
WAVEFORMS
Standard Sine, Square, Ramp, Triangle, Pulse, DC
Built-in arbitrary Exponential Rise, Exponential Fall, Negative Ramp
WAVEFORM CHARACTERISTICS
Sine
Frequency range 1 μHz to 20 MHz (1 μHz resolution)
Amplitude flatness
1
(relative to 1 kHz)
<100 kHz 0.2 dB
100 kHz to 1 MHz 0.35 dB
1 MHz to 20 MHz 0.7 dB
Harmonic distortion
2
Frequency range <1 Vpp ≥1 Vpp
DC to 20 kHz –70 dBc –60 dBc
20 kHz to 100 kHz –65 dBc –60 dBc
100 kHz to 1 MHz –50 dBc –45 dBc
1 MHz to 20 MHz –40 dBc –35 dBc
Total harmonic distortion
2
DC to 20 kHz 0.10%
Spurious (Non-harmonic) output
3
DC to 1 MHz –65 dBc
1 MHz to 20 MHz –65 dBc + 6 dB/octave
Phase noise (10 kHz offset) –115 dBc/Hz (Typical)
Square
Frequency range 1 μHz to 20 MHz (1 μHz resolution)
Rise/fall time <18 ns, 10 to 90% terminated load (50 Ω)
Overshoot <2%
Variable duty cycle 20% to 80% (up to 10 MHz)
40% to 60% (up to 20 MHz)
Asymmetry (@ 50% duty) 1% of period + 5 ns
Jitter (RMS) > 50 kHz = 1 ns + 100 ppm of period
≤ 50 kHz = 10 ns + 100 ppm of period