AD8310
Rev. F | Page 3 of 24
SPECIFICATIONS
T
A
= 25°C, V
S
= 5 V, unless otherwise noted.
Table 1.
Parameter Test Conditions/Comments Min Typ Max Unit
INPUT STAGE Inputs INHI, INLO
Maximum Input
1
Single-ended, p-p ±2.0 ±2.2 V
4 dBV
Equivalent Power in 50 Ω Termination resistor of 52.3 Ω 17 dBm
Differential drive, p-p 20 dBm
Noise Floor Terminated 50 Ω source 1.28 nV/√Hz
Equivalent Power in 50 Ω 440 MHz bandwidth −78 dBm
Input Resistance From INHI to INLO 800 1000 1200 Ω
Input Capacitance From INHI to INLO 1.4 pF
DC Bias Voltage Either input 3.2 V
LOGARITHMIC AMPLIFIER Output VOUT
±3 dB Error Dynamic Range From noise floor to maximum input 95 dB
Transfer Slope 10 MHz ≤ f ≤ 200 MHz 22 24 26 mV/dB
Overtemperature, −40°C < T
A
< +85°C 20 26 mV/dB
Intercept (Log Offset)
2
10 MHz ≤ f ≤ 200 MHz −115 −108 −99 dBV
Equivalent dBm (re 50 Ω) −102 −95 −86 dBm
Overtemperature, −40°C ≤ T
A
≤ +85°C −120 −96 dBV
Equivalent dBm (re 50 Ω) −107 −83 dBm
Temperature sensitivity −0.04 dB/°C
Linearity Error (Ripple) Input from −88 dBV (−75 dBm) to +2 dBV (+15 dBm) ±0.4 dB
Output Voltage Input = −91 dBV (−78 dBm) 0.4 V
Input = 9 dBV (22 dBm) 2.6 V
Minimum Load Resistance, R
L
100 Ω
Maximum Sink Current 0.5 mA
Output Resistance 0.05 Ω
Video Bandwidth 25 MHz
Rise Time (10% to 90%) Input level = −43 dBV (−30 dBm), R
L
≥ 402 Ω, C
L
≤ 68 pF 15 ns
Input level = −3 dBV (+10 dBm), R
L
≥ 402 Ω, C
L
≤ 68 pF 20 ns
Fall Time (90% to 10%) Input level = −43 dBV (−30 dBm), R
L
≥ 402 Ω, C
L
≤ 68 pF 30 ns
Input level = −3 dBV (+10 dBm), R
L
≥ 402 Ω, C
L
≤ 68 pF 40 ns
Output Settling Time to 1% Input level = −13 dBV (0 dBm), R
L
≥ 402 Ω, C
L
≤ 68 pF 40 ns
POWER INTERFACES
Supply Voltage, VPOS 2.7 5.5 V
Quiescent Current Zero signal 6.5 8.0 9.5 mA
Overtemperature −40°C < T
A
< +85°C 5.5 8.5 10 mA
Disable Current 0.05 μA
Logic Level to Enable Power High condition, −40°C < T
A
< +85°C 2.3 V
Input Current When High 3 V at ENBL 35 μA
Logic Level to Disable Power Low condition, −40°C < T
A
< +85°C 0.8 V
1
The input level is specified in dBV, because logarithmic amplifiers respond strictly to voltage, not power. 0 dBV corresponds to a sinusoidal single-frequency input of
1 V rms. A power level of 0 dBm (1 mW) in a 50 Ω termination corresponds to an input of 0.2236 V rms. Therefore, the relationship between dBV and dBm is a fixed
offset of 13 dBm in the special case of a 50 Ω termination.
2
Guaranteed but not tested; limits are specified at six sigma levels.
