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MAX2721EUP

1.7GHz to 2.5GHz, Direct I/Q Modulator with VGA and PA Driver

Maxim Integrated 

1.7GHz to 2.5GHz, Direct I/Q Modulator with

VGA and PA Driver

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX2720/MAX2721 EV Kit, VCC = +3.0V, SHDN = VCC, ENX2 = GND, VPC = 2.5V, input I/Q signals driven in quadrature, from a

1kΩ source impedance, single-ended, fI+ = fQ+ = 500kHz, VI+ = VQ+ = 200mVp-p, PLO = -13dBm, fLO = 950MHz (MAX2720), fLO =

1157.5MHz (MAX2721), PDRIN = -12dBm, fDRIN = 1900MHz (MAX2720), fDRIN = 2315MHz (MAX2721), MODOUT and DROUT ports

are matched to a 50Ω load, TA = +25°C, unless otherwise noted.) (Note 1)

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

PA DRIVER

Frequency Range (Note 6)

MAX2720

MAX2721

1700

2100

2100

2500

MHz

Gain (Note 6)

MAX2720

MAX2721

11

13.5 15.5

dB

8.5

11.5 15.5

Gain Variation Over Temperature

TA = -40°C to +85°C

MAX2720

MAX2721

±0.4 ±0.8

dB

±0.3 ±0.8

Noise Figure

MAX2720

MAX2721

2.4

dB

2.6

Output 1dB Compression Point

MAX2720

MAX2721

+9.5

+8

+12.5

+11

dBm

Output Third-Order Intercept Point

MAX2720 (Note 7)

MAX2721 (Note 8)

+22 +24

+20 +24

dBm

Reverse Isolation

19

dB

DROUT to LO Input Isolation

65

dB

Input VSWR

1.5:1

Output VSWR

1.5:1

Note 1: Min/max limits are guaranteed by design and characterization and are not production tested.

Note 2: I/Q input bandwith is determined by the baseband source impedance and the I/Q input capacitance. The bandwith can be

increased by lowering the baseband source impedance.

Note 3: MODOUT output power specifications are met over this frequency range for VPC = 2.5V and TA = +25°C.

Note 4 IP3 measured with two tones, f1 = 500kHz and f2 = 600kHz, at 100mVp-p each.

Note 5: Measured relative to desired upconverted signal level.

Note 6 DROUT gain specifications are met over this frequency range at TA = +25°C.

Note 7: IP3 measured with two tones, f1 = 1900MHz and f2 = 1901MHz, at -18dBm each.

Note 8: IP3 measured with two tones, f1 = 2315MHz and f2 = 2316MHz, at -18dBm each.

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