AD8264
Rev. A | Page 20 of 40
TEST CIRCUITS
VS = ±2.5 V, TA = 25°C, f = 10 MHz, CL = 5 pF, RL = 500 per output (VGAx, VOHx, VOLx), VGAIN = (VGNHx VGNLO) = 0 V,
VVOCM = GND, VOFSx = GND, gain range = 6 dB to 30 dB, unless otherwise specified.
50Ω
PrA
6dB
+
–
6dB
+
–
IPPx
IPNx
GNHx
VOLx
VOHx
OFSx
VOCM
VGAx
AD8264
OVEN
GNLO
DC
METER
500
500
500
VGAIN
DC
METER
07736-
119
PrA
6dB
+
–
6dB
+
–
IPPx
IPNx
GNHx
VOLx
VOHx
OFSx
VOCM
VGAx
AD8264
GNLO
50Ω
DIFFERENTIAL
PROBE
DIFFERENTIAL
PROBE
VGAIN
CH1
CH2
50Ω
500Ω
OUT
SIGNAL
GENERATOR
OSCILLOSCOPE
07736-
100
Figure 72. Gain Error vs. VGAIN at Various FrequenciestoVGAx (See Figure5) PrA
6dB
+
–
6dB
+
–
VOCM
AD8264
GNLO
50Ω
DIFFERENTIAL
PROBE
VGAIN
CH1
CH2
50Ω
500Ω
NETWORK ANALYZER
07736-
072
IPPx
IPNx
GNHx
VOLx
VOHx
OFSx
VGAx
Figure 73. Frequency Response vs. Gain to VGAx for Various Values of VGAIN,
PrA
6dB
+
–
6dB
+
–
IPPx
IPNx
GNHx
VOLx
VOHx
OFSx
VOCM
VGAx
AD8264
GNLO
50Ω
DIFFERENTIAL
PROBE
VGAIN
CH1
CH2
50Ω
NETWORK ANALYZER
500Ω
07736-
101
Figure 74. Frequency Response vs. Gain to Differential Output for Various
PrA
6dB
+
–
6dB
+
–
IPPx
IPNx
GNHx
VOLx
VOHx
OFSx
VOCM
VGAx
AD8264
GNLO
50Ω
DIFFERENTIAL
PROBE
CH1
CH2
50Ω
500Ω
NETWORK ANALYZER
CL
07736-
102
Figure 75. Frequency Response to Differential Output for