AD8314
Rev. B | Page 3 of 20
SPECIFICATIONS
V
S
= 3 V, T
A
= 25°C, unless otherwise noted.
Table 1.
Parameter Conditions Min Typ Max Unit
OVERALL FUNCTION
Frequency Range
1
To meet all specifications 0.1 2.5 GHz
Input Voltage Range Internally ac-coupled 1.25 224 mV rms
Equivalent Power Range 52.3 Ω external termination −45 0 dBm
Logarithmic Slope Main output, V_UP, 100 MHz
2
18.85 21.3 23.35 mV/dB
Logarithmic Intercept Main output, V_UP, 100 MHz −68 −62 −56 dBV
Equivalent dBm Level 52.3 Ω external termination −55 −49 −43 dBm
INPUT INTERFACE Pin RFIN
DC Resistance to COMM 100 kΩ
Inband Input Resistance f = 0.1 GHz 3 kΩ
Input Capacitance f = 0.1 GHz 2 pF
MAIN OUTPUT Pin V_UP
Voltage Range V_UP connected to VSET 0.01 1.2 V
Minimum Output Voltage No signal at RFIN, R
L
≥ 10 kΩ 0.01 0.02 0.05 V
Maximum Output Voltage
3
R
L
≥ 10 kΩ 1.9 2 V
General Limit 2.7 V ≤ V
S
≤ 5.5 V V
S
− 1.1 V
S
− 1 V
Available Output Current Sourcing/sinking 1/0.5 2/1 mA
Response Time 10% to 90%, 10 dB step 70 ns
Residual RF (at 2f) f = 0.1 GHz (worst condition) 100 μV
INVERTED OUTPUT Pin V_DN
Gain Referred to V_UP V
DN
= 2.25 V − 2 × V
UP
−2
Minimum Output Voltage V
S
≥ 3.3 V 0.01 0.05 0.1 V
Maximum Output Voltage V
S
≥ 3.3 V
4
2.1 2.2 2.5 V
Available Output Current Sourcing/sinking 4/100 6/200 mA/μA
Output-Referred Noise RF input = 2 GHz, –33 dBV, f
NOISE
= 10 kHz 1.05 μV/√Hz
Response Time 10% to 90%, 10 dB input step 70 ns
Full-Scale Settling Time −40 dBm to 0 dBm input step to 95% 150 ns
SETPOINT INPUT Pin VSET
Voltage Range Corresponding to central 40 dB 0.15 1.2 V
Input Resistance 7 10 kΩ
Logarithmic Scale Factor f = 0.900 GHz 20.7 mV/dB
f = 1.900 GHz 19.7 mV/dB
ENABLE INTERFACE Pin ENBL
Logic Level to Enable Power HI condition, −40°C ≤ T
A
≤ +85°C 1.6 V
POS
V
Input Current when HI 2.7 V at ENBL, −40°C ≤ T
A
≤ +85°C 20 300 μA
Logic Level to Disable Power LO condition, −40°C ≤ T
A
≤ +85°C −0.5 +0.8 V
POWER INTERFACE Pin VPOS
Supply Voltage 2.7 3.0 5.5 V
Quiescent Current 3.0 4.5 5.7 mA
Overtemperature −40°C ≤ T
A
≤ +85°C 2.7 4.4 6.6 mA
Total Supply Current when Disabled 20 95 μA
Overtemperature −40°C ≤ T
A
≤ +85°C 40 μA
1
For a discussion on operation at higher frequencies, see Applications section.
2
Mean and standard deviation specifications are available in Table 4.
3
Increased output possible when using an attenuator between V_UP and VSET to raise the slope.
4
Refer to Figure 22 for details.
