繁星点点数字模拟开关
ADG1611/ADG1612/ADG1613
07981-029
Figure 30. THD + Noise
VVIN
VS
VIN
VOUT
07981-023
Figure 31. Switching Times
VIN
0V
50%
50%
VV
OUT1
VOUT1
VOUT2
07981-024
Figure 32. Break-Before-Make Time Delay
VINADG1612
ON
OFF
VINVOUT
07981-025
Figure 33. Charge Injection
Rev. A | Page 14 of 16
数字模拟开关
ADG1611/ADG1612/ADG1613
tON
The delay between applying the digital control input and the output switching on. See Figure 31.
tOFF
The delay between applying the digital control input and the output switching off. See Figure 31.
Charge Injection
A measure of the glitch impulse transferred from the digital input to the analog output during switching. See Figure 33. Off Isolation
A measure of unwanted signal coupling through an off switch. See Figure 27.
Crosstalk
A measure of unwanted signal that is coupled through from one channel to another as a result of parasitic capacitance. See Figure 28.
Bandwidth
The frequency at which the output is attenuated by 3 dB. See Figure 29.
On Response
The frequency response of the on switch. Insertion Loss
The loss due to the on resistance of the switch.
Total Harmonic Distortion + Noise (THD + N)
The ratio of the harmonic amplitude plus noise of the signal to the fundamental. See Figure 30.
AC Power Supply Rejection Ratio (ACPSRR)
The ratio of the amplitude of signal on the output to the amplitude of the modulation. This is a measure of the ability of the part to avoid coupling noise and spurious signals that appear on the supply voltage pin to the output of the switch. The dc voltage on the device is modulated by a sine wave of 0.62 V p-p.
TERMINOLOGY
IDD
The positive supply current. ISS
The negative supply current.
VD (VS)
The analog voltage on Terminal D and Terminal S. RON
The ohmic resistance between Terminal D and Terminal S. RFLAT(ON)
Flatness that is defined as the difference between the maximum and minimum value of on resistance measured over the specified analog signal range.
IS (Off)
The source leakage current with the switch off. ID (Off)
The drain leakage current with the switch off. ID, IS (On)
The channel leakage current with the switch on. VINL
The maximum input voltage for Logic 0. VINH
The minimum input voltage for Logic 1. IINL (IINH)
The input current of the digital input.
CS (Off)
The off switch source capacitance, which is measured with reference to ground.
CD (Off)
The off switch drain capacitance, which is measured with reference to ground.
CD, CS (On)
The on switch capacitance, which is measured with reference to ground. CIN
The digital input capacitance.
Rev. A | Page 15 of 16
