MAX2150_06 Datasheet, PDF (4/16 Pages) Maxim Integrated Products – Wideband I/Q Modulator with Sigma-Delta Fractional-N Synthesizer

Wideband I/Q Modulator with Sigma-Delta
Fractional-N Synthesizer
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2150 EV kit. V_CC = +2.7V to +3.6V, SHDN = PLLEN = TXEN = high, BUFEN = low. Input I/Q signals: F_I/Q = 500kHz, V_I/Q = 1V_P-P.
I+, Q+ single-ended input, driven from AC-coupled source. I-, Q- single-ended inputs are AC-coupled to GND. RFOUT and BUFOUT
output ports are terminated in 50Ω loads. f_LO =1750MHz, P_LO = -10dBm, typical values are at V_CC = +3V, T_A = +25°C, unless other-
wise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
REFERENCE OSCILLATOR AND DIVIDER
Input Frequency Range
10
50
MHz
AC-Coupled Input Sensitivity
Reference Division Ratio
AC-coupled, single ended (Note 2)
(Notes 2, 6)
0.4
2.3
V_P-P
1
4
CHARGE-PUMP OUTPUT
CP1, CP0 = 00
Charge-Pump Current (Note 7)
CP1, CP0 = 01
CP1, CP0 = 10
CPX = 0
CPX = 1
CPX = 0
CPX = 1
CPX = 0
CPX = 1
0.12 0.17 0.22
0.23 0.34 0.44
0.23 0.35 0.46
0.47 0.67 0.88
mA
0.36 0.52 0.68
0.70 1.00 1.30
Charge-Pump Voltage
Compliance
CP1, CP0 = 11
CPX = 0
CPX = 1
Sink/source currents match within ±5%
0.48 0.69 0.90
0.91 1.31 1.70
0.5
V_CC -
0.5
V
Note 1: Parameters are guaranteed by production testing at +25°C and +85°C. Minimum and maximum values over the tempera-
ture and supply voltage range are guaranteed by design and characterization.
Note 2: Guaranteed by design and characterization.
Note 3: Measured with MAX2150 EV kit.
Note 4: Measured with an on-chip crystal oscillator.
Note 5: In-loop spurious emissions occur when synthesizing a frequency at an integer multiple of the comparison frequency with
fractional offset within the PLL loop BW.
Note 6: If an on-chip oscillator is used, a fundamental tone crystal is needed.
Note 7: Minimum and maximum values at CPX = 1 are guaranteed by production testing. Values at CPX = 0 are guaranteed by
design and characterization.
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