Data Sheet AD8340
04699-009
GAIN SETPOINT
0
0.3
0.5
0.9
1.0
0.8
0.70.6
0.4
0.2
0.1
NOISE FLOOR (dBm/Hz)
–142
–143
–152
–144
–145
–146
–147
–148
–149
–150
–151
NO RF INPUT
RF P
IN
= +5dBm
RF P
IN
= –5dBm
RF P
IN
= 0dBm
Figure 9. Output Noise Floor vs. Gain, Noise in dBm/Hz, No Carrier,
With Carrier (20 MHz Offset) P
IN
= −5 dBm, 0 dBm, and +5 dBm
04699-010
FREQUENC
Y (MHz)
0
–14
–20
GAIN (dB)
–2
–12
–16
–18
–4
–8
–6
–10
–22
–24
700 1000
950900
850800
750
GAIN SETPOINT = 1.0
GAIN SETPOINT = 0.5
GAIN SETPOINT = 0.1
Figure 10. Gain vs. Frequency at Different Gain Setpoints
(700 MHz to 1000 MHz), Phase Setpoint = 0°
04699-011
RF FREQUENCY (MHz)
700 750 800 850 1000900 950
–145
–146
–152
–147
–148
–149
–150
–151
NOISE (dBm/Hz)
Figure 11. Output Noise Floor vs. Frequency, Maximum Gain,
No RF Carrier, Phase Setpoint = 0°
04699-012
FREQUENCY
(MHz)
700 750 800 850 1000900 950
GAIN FL
ATNESS (dB)
0
–0.5
–2.5
–1.0
–1.5
–2.0
Figure 12. Gain Flatness vs. Frequency, Maximum Gain, Phase Setpoint = 0°
04699-013
0
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
100
200
300 400
500 600 700
800
900
1000
DIFFERENTIAL
BASEBAND INPUT LEVE
L (mV p-p)
(I OR Q CHANNE
L
DRIVEN
AT 1MHz)
RF OUTPUT AM SIDEBAND POWER (dBm)
FUNDAMENT
A
L
POWER, 879MHz, 881MHz
SECOND BASEBAND HARMONIC PRODUC
T
,
878MHz, 882MHz
THIRD BASEBAND HARMONIC PRODUC
T
,
877MHz, 883MHz
Figure 13. Baseband Harmonic Distortion
(I and Q Channel, RF Input = 0 dBm,
Balun and Cable Losses of Approximately 2 dB Not Accounted for in Plot)
04699-014
FREQUENCY (MHz)
700 750 800 850 1000900 950
OP1dB (dBm)
14
12
0
10
8
6
4
2
TEMP = –40°C
TEMP = +85°C
TEMP = +25°C
Figure 14. Output 1 dB Compression Point vs. Frequency and Temperature,
Maximum Gain, Phase Setpoint = 0°
Rev. C | Page 7 of 20
