AD8310

Rev. F | Page 3 of 24

SPECIFICATIONS

TA = 25°C, VS = 5 V, unless otherwise noted.

Table 1.

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

INPUT STAGE

Inputs INHI, INLO

Maximum Input1

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 < TA < +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 ≤ TA ≤ +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, RL

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), RL ≥ 402 Ω, CL ≤ 68 pF

15

ns

Input level = −3 dBV (+10 dBm), RL ≥ 402 Ω, CL ≤ 68 pF

20

ns

Fall Time (90% to 10%)

Input level = −43 dBV (−30 dBm), RL ≥ 402 Ω, CL ≤ 68 pF

30

ns

Input level = −3 dBV (+10 dBm), RL ≥ 402 Ω, CL ≤ 68 pF

40

ns

Output Settling Time to 1%

Input level = −13 dBV (0 dBm), RL ≥ 402 Ω, CL ≤ 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 < TA < +85°C

5.5

8.5

10

mA

Disable Current

0.05

μA

Logic Level to Enable Power

High condition, −40°C < TA < +85°C

2.3

V

Input Current When High

3 V at ENBL

35

μA

Logic Level to Disable Power

Low condition, −40°C < TA < +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.