LTC5594

13

Rev A

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MACOM H9 180° combiner at amplifier outputs de-embedded from measurement unless otherwise noted. Test circuit shown in

Figure 1 with 1GHz interstage filter.

Gain Error Distribution vs

Phase Error Distribution vs

Image Rejection Distribution vs

–0.20 –0.15 –0.10 –0.05

0

0.05

0.10

100

80

60

40

20

0

GAIN ERROR (dB)

–40°C

25°C

85°C

105°C

5594 G55

–0.5

0

0.5

1

1.5

2

100

80

60

40

20

0

PHASE ERROR (DEGREE)

–40°C

25°C

85°C

105°C

5594 G56

–50 –48 –46 –44 –42 –40 –38 –36 –34

100

80

60

40

20

0

-IMAGE REJECTION (dB)

–40°C

25°C

85°C

105°C

5594 G57

PIN FUNCTIONS

TEMP (Pin 2): Temperature Monitoring Diode. The diode

to ground at this pin can be used to measure the die

temperature. A forward bias current of 100µA can be

used into this pin and the forward voltage drop can be

measured as a function of die temperature.

RF (Pin 4): 50Ω RF Input. The pin should be DC-blocked

with a coupling capacitor; 1000pF is recommended.

Adjust. Source resistance should be 1k or lower. If this

pin is left unconnected, it will internally self-bias to 0.9V.

EN (Pin 7): Enable Pin. A logic high on this pin will enable

the chip. An internal 200k pull-down resistor ensures the

chip remains disabled if there is no connection to the pin

(open-circuit condition).

MQP, MQM, MIM, MIP (Pins 9, 10, 31, 32): Mixer Dif-

ferential Output Pins. When connected to the amplifier

A lowpass filter is typically used between the MQM(P) or

MIM(P) pins and the AQM(P) or AIM(P) pins to suppress

the high frequency mixing products. See the Applications

section for more information.

DNC (Pins 11, 14, 30): DO NOT CONNECT. No connection

should be made to these pins.

AQM, AQP, AIP, AIM (Pins 12, 13, 28, 29): Amplifier

Differential Input Pins. When connected to the mixer

A lowpass filter is typically used between the AQM(P) or

AIM(P) pins and the MQM(P) or MIM(P) pins to suppress

the high frequency mixing products. See the Applications

section for more information.

IFQM, IFQP, IFIP, IFIM (Pins 15, 16, 25, 26): IF Amplifier

Output Pins. The current used by the output amplifiers

is set by a resistance of 25Ω to 200Ω from each pin to

CSB (Pin 17): Chip Select Bar. When CSB is low, the

serial interface is enabled. It can be driven with 1.2V to

3.3V logic levels.

bypassed with a 1000pF and 4.7µF capacitor to ground.

LOP, LOM (Pins 19, 20): LO Inputs. External matching

is not needed. Can be driven 50Ω single-ended or 100Ω

differentially. The LO pins should be DC-blocked with