LT5546

3

5546f

ELECTRICAL CHARACTERISTICS

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: Specifications over the –40

°C to 85°C temperature range are

assured by design, characterization and correlation with statistical process

controls.

Note 3: Tests are performed as shown in the configuration of Figure 6. The

IF input transformer loss is substracted from the measured values.

Note 4: Power gain is defined here as the I (or Q) output power into a 4k

Ω

differential load, divided by the IF input power in dB. To calculate the

voltage gain between the differential I output (or Q output) and the IF

input, including ideal matching network, 10 • log(4k

Ω/50) = 19dB has to

be added to this power gain.

Note 5: If a narrow-band match is used in the 2xLO path instead of a 1:2

transformer with 240

Ω shunt resistor, 2xLO input power can be reduced

to –10dBm, without degrading the phase imbalance. See Figure 11 and

Figure 6.

Note 8: The typical parameter is defined as the mean of the absolute

values of the data distribution.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Variable Gain Amplifier (VGA)

Gain Slope Linearity Error

±0.5

dB

Temperature Gain Shift

T = –40

±0.4

dB

Gain Control Response Time

Settled within 10% of Final Value

90

ns

Gain Control Voltage Range

0 to 1.7

V

Gain Control Slope

41

dB/V

Gain Control Input Impedance

To Internal 0.2V Reference

25

k

Ω

Delay Shift Over Gain Control

Measured Over 10dB Step

2

ps/dB

Baseband Lowpass Filter (LPF)

–3dB Cutoff Frequency

13

17

MHz

Amplitude Roll-Off at 50MHz

–9

dB

Group Delay Ripple

1ns

2xLO Input

Frequency Range

80 to 1000

MHz

Input Power

1:2 Transformer with 240

Ω Shunt Resistor (Note 5)

–20

–5

dBm

Input Power

LC Balun (Note 5)

–10

dBm

Input Impedance

800

Ω//0.4pF

DC Common Mode Voltage

V

IF Detector

IF Detector Range

Referred to IF Input

–30 to 8

dBm

Output Voltage Range

0.27 to 1.2

V

Detector Response Time

With External 1.8pF Load,

80

ns

Settling within 10% of Final Value

Power Supply

Supply Voltage

1.8

5.25

V

Supply Current

EN = High, STBY = Low or High

24

34

mA

Shutdown Current

EN, STBY < 350mV

0.2

30

µA

Standby Current

EN = Low; STBY = High

3.6

6

mA

Mode

Enable

Enable Pin Voltage

EN = High

1

V

Disable

Enable Pin Voltage

EN = Low

0.5

V

Standby

Standby Pin Voltage

STBY = High

1

V

No Standby

Standby Pin Voltage

STBY = Low

0.5

V