LMH6618_0711 Datasheet, PDF (22/28 Pages) National Semiconductor (TI) – PowerWise® 130 MHz, 1.25 mA RRIO Operational Amplifiers

TABLE 2. Performance Data for the LMH6619 Driving an ADC121S625
Parameter
Signal Frequency
Signal Amplitude
SINAD
SNR
THD
SFDR
ENOB
Measured Value
10 kHz
2.5V
67.9 dB
68.29 dB
−78.6 dB
75.0 dB
11.0 bits
DIFFERENTIAL ADC DRIVER
The circuit in Figure 3 can be used to drive both inputs of a
differential ADC. Figure 6 shows the LMH6619 driving an AD-
C121S705. The ADC121S705 is a fully differential 12-bit
ADC. Performance with this circuit is similar to the circuit in
Figure 3.
FIGURE 6. LMH6619 Driving an ADC121S705
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