Data Sheet

AD8307

Rev. F | Page 3 of 24

SPECIFICATIONS

VS = 5 V, TA = 25°C, RL ≥ 1 MΩ, unless otherwise noted.

Table 2.

Parameter

Conditions

Min

Typ

Max

Unit

GENERAL CHARACTERISTICS

Input Range (±3 dB Error)

From noise floor to maximum input

92

dB

Input Range (±1 dB Error)

From noise floor to maximum input

88

dB

Logarithmic Conformance

f ≤ 100 MHz, central 80 dB

±0.3

±1

dB

f = 500 MHz, central 75 dB

±0.5

dB

Logarithmic Slope

Unadjusted1

23

25

27

mV/dB

vs. Temperature

23

27

mV/dB

Logarithmic Intercept

Sine amplitude, unadjusted2

20

μV

Equivalent sine power in 50 Ω

−87

−84

−77

dBm

vs. Temperature

−88

−76

dBm

Input Noise Spectral Density

Inputs shorted

1.5

nV/√Hz

Operating Noise Floor

RSOURCE = 50 Ω/2

−78

dBm

Output Resistance

Pin 4 to ground

10

12.5

15

kΩ

Internal Load Capacitance

3.5

pF

Response Time

Small signal, 10% to 90%, 0 mV to 100 mV, CL = 2 pF

400

ns

Large signal, 10% to 90%, 0 V to 2.4 V, CL = 2 pF

500

ns

Upper Usable Frequency

500

MHz

Lower Usable Frequency

AC-coupled input

10

Hz

AMPLIFIER CELL CHARACTERISTICS

Cell Bandwidth

−3 dB

900

MHz

Cell Gain

14.3

dB

INPUT CHARACTERISTICS

DC Common-Mode Voltage

AC-coupled input

3.2

V

Common-Mode Range

Either input (small signal)

−0.3

+1.6

VS − 1

V

DC Input Offset Voltage3

RSOURCE ≤ 50 Ω

50

500

μV

Drift

0.8

μV/°C

Incremental Input Resistance

Differential

1.1

kΩ

Input Capacitance

Either pin to ground

1.4

pF

Bias Current

Either input

10

25

μA

POWER INTERFACES

Supply Voltage

2.7

5.5

V

Supply Current

VENB ≥ 2 V

8

10

mA

Disabled

VENB ≤ 1 V

150

750

μA

1 This can be adjusted downward by adding a shunt resistor from the output to ground. A 50 kΩ resistor reduces the nominal slope to 20 mV/dB.

2 This can be adjusted in either direction by a voltage applied to Pin 5, with a scale factor of 8 dB/V.

3 Normally nulled automatically by internal offset correction loop and can be manually nulled by a voltage applied between Pin 3 and ground; see the Applications

Information section.