LT5568 datasheet(5/30 Pages) LINER

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LTC5588-1

55881fb

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LTC5588-1 is guaranteed functional over the operating

temperature range from –40°C to 85°C.

Note 3: At 6MHz offset from the LO signal frequency. 100nF between BBPI

and BBMI, 100nF between BBPQ and BBMQ.

Note 4: Baseband inputs are driven with 4.5MHz and 5.5MHz tones.

Note 5: IM2 is measured at fLO – 10MHz.

Note 6: IM3 is measured at fLO – 3.5MHz and fLO – 6.5MHz.

OIP3 = lowest of (1.5 • P{fLO-5.5MHz} – 0.5 • P{fLO-6.5MHz})

and (1.5 • P{fLO-4.5MHz} – 0.5 • P{fLO-3.5MHz}).

Note 7: Without image or LO feedthrough nulling (unadjusted).

ELECTRICAL CHARACTERISTICS V

CC = 3.3V, EN = 3.3V, TA = 25°C, LOP AC-terminated with 50Ω to ground,

BBPI, BBMI, BBPQ, BBMQ common mode DC voltage VCMBB = 0.5VDC, I and Q baseband input signal = 100kHz CW, 1VP-P(DIFF) each, I

and Q 90° shifted, lower sideband selection, LINOPT pin floating, unless otherwise noted. Test circuit is shown in Figure 8.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

OP1dB

Output 1dB Compression

1.9

dBm

OIP2

Output 2nd-Order Intercept

(Notes 4, 5)

35.4

dBm

OIP3

Output 3rd-Order Intercept

(Notes 4, 6)

17.9

dBm

NFloor

RF Output Noise Floor

No Baseband AC Input Signal (Note 3)

–156.7

dBm/Hz

Image Rejection

(Note 7)

–32.3

dBc

LOFT

Carrier Leakage (LO Feedthrough)

(Note 7)

–30.2

dBm

Baseband Inputs (BBPI, BBMI, BBPQ, BBMQ)

BWBB

Baseband Bandwidth

–1dB Bandwidth, RSOURCE = 25Ω, Single Ended

430

MHz

Ib(BB)

Baseband Input Current

Single Ended

–136

μA

RIN(SE)

Input Resistance

Single Ended

–3

kΩ

VCMBB

DC Common Mode Voltage

Externally Applied

0.5

VSWING

Amplitude Swing

No Hard Clipping, Single Ended

0.86

VP-P

Power Supply (VCC1, VCC2)

VCC

Supply Voltage

3.15

3.3

3.45

ICC(ON)

Supply Current

EN = High

275

303

325

ICC(OFF)

Supply Current, Sleep Mode

EN = 0V

900

μA

tON

Turn-On Time

EN = Low to High (Notes 8, 13)

tOFF

Turn-Off Time

EN = High to Low (Notes 9, 13)

tON(IR)

Image Rejection Settling

EN = Low to High, <–60dBc (Note 13)

tON(LO)

LO Suppression Settling

EN = Low to High, <–60dBm (Note 13)

tON(PHASE)

Phase Settling

EN = Low to High, Phase < 0.5°, fLOM = fRF = 2.14GHz,

Constant Board Temperature

VLINOPT(ON) LINOPT Voltage

Floating LINOPT Pin, EN = High

2.56

VLINOPT(OFF) LINOPT Voltage, Sleep Mode

Floating LINOPT Pin, EN = Low

3.3

Enable Pin

Enable

Input High Voltage

Input High Current

EN = High

EN = 3.3V

Sleep

Input Low Voltage

Input Low Current

EN = Low

EN = 0V

μA

Temperature Sensor (Thermistor) (Note 14)

Thermistor Resistance

EN = Low, IRT = 100μA

1.385

kΩ

Temperature Slope

EN = Low, IRT = 100μA

Ω/°C

Note 8: RF power is within 10% of final value.

Note 9: RF power is at least 30dB down from its ON state.

Note 10: RF matching center frequency is set below band center

frequency in order to align RF passband center frequency with band center

frequency.

Note 11: An external voltage is optimally set at the LINOPT pin for best

output 3rd-order intercept.

Note 12: I and Q baseband Input signal = 10MHz CW, 0.8VP-P, DIFF each,

I and Q 0° shifted.

Note 13: fLOM = 2.14GHz, PLOM = 0dBm, fBB = 134MHz; LO feedthrough

and image rejection is nulled during previous EN = high cycles, C5 = C6 =

10pF; C13 = 0; Extra 680μF capacitors (SANYO 6SEPC680M) from TP1 to

ground and TP2 to ground, RF noise filter with 93MHz bandwidth is used.

Note 14: Thermistor performance is guaranteed by Design.

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