LF198-N_16 Datasheet, PDF (22/33 Pages) Texas Instruments – Monolithic Sample-and-Hold Circuits

LF198-N, LF298, LF398-N
LF198A-N, LF398A-N
SNOSBI3B – JULY 2000 – REVISED NOVEMBER 2015
Typical Applications (continued)
Table 1. 2-Channel Switch Characteristics
Gain
ZIN
BW
Crosstalk @ 1 kHz
Offset
A
1 ± 0.02%
10¹⁰ Ω
≈1 MHz
–90 dB
≤ 6 mV
B
1 ± 0.2%
47 kΩ
≈400 kHz
–90 dB
≤ 75 mV
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9.2.11 DC and AC Zeroing
The LF198-N features an OFFSET ADJUST pin which can be connected to a potentiometer to zero the DC
offset. Additionally, an inverter may be connected with an AC-coupled potentiometer to the HOLD CAPACITOR
pin to create a DC- and AC-zeroing circuit as shown in Figure 37.
Figure 37. DC and AC Zeroing
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