AD8310
SPECIFICATIONS
T
A
= 25°C, V
S
= 5 V, unless otherwise noted.
Table 1.
Parameter
INPUT STAGE
Maximum Input
Equivalent Power in 50 Ω
Noise Floor
Equivalent Power in 50 Ω
Input Resistance
Input Capacitance
DC Bias Voltage
LOGARITHMIC AMPLIFIER
±3 dB Error Dynamic Range
Transfer Slope
Intercept (Log Offset)
Conditions
Inputs INHI, INLO
Single-ended, p-p
Termination resistor of 52.3 Ω
Differential drive, p-p
Terminated 50 Ω source
440 MHz bandwidth
From INHI to INLO
From INHI to INLO
Either input
Output VOUT
From noise floor to maximum input
10 MHz ≤ f ≤ 200 MHz
Overtemperature, –40°C < T
A
< +85°C
10 MHz ≤ f ≤ 200 MHz
Equivalent dBm (re 50 Ω)
Overtemperature, −40°C ≤ T
A
≤ +85°C
Equivalent dBm (re 50 Ω)
Temperature sensitivity
Input from –88 dBV (–75 dBm) to +2 dBV (+15 dBm)
Input = –91 dBV (–78 dBm)
Input = 9 dBV (22 dBm)
Min
±2.0
Typ
±2.2
4
17
20
1.28
−78
1000
1.4
3.2
95
24
−108
−95
Max
Unit
V
dBV
dBm
dBm
nV/√Hz
dBm
Ω
pF
V
dB
mV/dB
mV/dB
dBV
dBm
dBV
dBm
dB/°C
dB
V
V
Ω
mA
Ω
MHz
ns
ns
ns
ns
ns
V
mA
mA
μA
V
μA
V
800
1200
22
20
−115
−102
−120
−107
26
26
−99
−86
−96
−83
Linearity Error (Ripple)
Output Voltage
Minimum Load Resistance, R
L
Maximum Sink Current
Output Resistance
Video Bandwidth
Rise Time (10% to 90%)
Fall Time (90% to 10%)
Output Settling Time to 1%
POWER INTERFACES
Supply Voltage, VPOS
Quiescent Current
Overtemperature
Disable Current
Logic Level to Enable Power
Input Current when High
Logic Level to Disable Power
1
Input Level = −43 dBV (−30 dBm), R
L
≥ 402 Ω, C
L
≤ 68 pF
Input Level = −3 dBV (+10 dBm), R
L
≥ 402 Ω, C
L
≤ 68 pF
Input Level = −43 dBV (−30 dBm), R
L
≥ 402 Ω, C
L
≤ 68 pF
Input Level = −3 dBV (+10 dBm), R
L
≥ 402 Ω, C
L
≤ 68 pF
Input Level = −13 dBV (0 dBm), R
L
≥ 402 Ω, C
L
≤ 68 pF
2.7
6.5
5.5
−0.04
±0.4
0.4
2.6
100
0.5
0.05
25
15
20
30
40
40
5.5
9.5
10
Zero-signal
−40°C < T
A
< +85°C
High condition, −40°C < T
A
< +85°C
3 V at ENBL
Low condition, −40°C < T
A
< +85°C
8.0
8.5
0.05
2.3
35
0.8
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.
Rev. E | Page 3 of 24
AD [ ANALOG DEVICES ]
