Datasheet

AD8099
Data Sheet
Rev. D | Page 22 of 28
8
1
4
7
5
3
6
2
AD8099
AD7667
C4
10µF
C
C
9pF
C1
2pF
C5
0.1µF
C1
10µF
C2
0.1µF
R
C
50Ω
R
F
150Ω
R
G
150Ω
R
S
50Ω
R1
590Ω
R2
590Ω
+V
S
–V
S
DISABLE
V
IN
04511-0-072
IN
REFGND
REF
INGND
AGND AVDD DGND DVDD
DVDD
C6
2.7nF
R7
15Ω
AVDD
1µF
47µF
REF
0.1µF
0.1µF
+2.5V
Figure 71. ADC Driver
16-BIT ADC DRIVER
Ultralow noise and distortion performance make the AD8099
an ideal ADC driver. Even though the AD8099 is not unity gain
stable, it can be configured to produce a net gain of +1
amplifier, as shown in
Figure 71. This is achieved by combining
a gain of +2 and a gain of –1 for a net gain of +1. The input
range of the ADC is 0 V to 2.5 V.
Table 6 shows the performance data of the AD8099
and the
Analog Devices AD7667 a 1 MSPS 16-bit ADC.
Table 6. ADC Driver Performance, f
C
= 20 kHz,
V
OUT
= 2.24 V p-p
Parameter Measurement (dB)
Second Harmonic Distortion –111.4
Third Harmonic Distortion –103.2
THD
–101.4
SFDR 102.2
SNR 88.1