LMH6612MA Datasheet, PDF (25/32 Pages) Texas Instruments – Single Supply 345 MHz Rail-to-Rail Output Amplifiers

The performance of the LMH6612 with the ADC121S625 is
shown in Table 2.
TABLE 2. Performance of the LMH6612 Combined with the ADC121S625
Amplifier
Output/ADC Input
2.5
SINAD
(dB)
68.8
SNR
(dB)
69
THD
(dB)
−81.5
SFDR
(dBc)
75.1
ENOB
11.2
Notes
ADC121S625 @ f = 20 kHz
DIFFERENTIAL TO DIFFERENTIAL ADC DRIVER
The LMH6612 dual op amp can be configured as a differential
to differential ADC driver to buffer a differential source to a
differential input ADC as shown in Figure 7. The differential
to differential ADC driver can be formed using two single to
single ADC drivers. Each output from these drivers goes to a
separate input of the differential ADC. Here, each single to
single ADC driver uses the same components and is config-
ured for a gain of -1 (inverting).
FIGURE 7. Differential to Differential ADC Driver
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