MAX2150ETI+T Maxim Integrated Products, MAX2150ETI+T Datasheet - Page 12

• Manufacturer Part Number: MAX2150ETI+T
• Description: Modulator / Demodulator 3.0 Volt Wideband I- Q Modulator with Sig
• Manufacturer: Maxim Integrated Products

Specifications of MAX2150ETI+T

• Package / Case: TQFN-28
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Proper voltage-supply bypassing is essential to reduce
the spurious emissions mentioned above. It is recom-
mended that each V
Wideband I/Q Modulator with Sigma-Delta
Fractional-N Synthesizer
Table 6. Control Register
Table 7. Device Modes
12
HW_SHDN
SW_MUTE
SW_SHDN
BIT ID
CPX
SYNTH
MODE
INT
PD
XX
BE
TE
MOD
______________________________________________________________________________________
TX
INT_MODE
CP_MULT
BUFEN
NAME
PWDN
TXEN
SHDN
BIT
XX
Power-Supply (V
H
H
H
H
H
L
CC
TXEN
pin be bypassed independently
PWR-UP
H
H
H
STATE
L
X
X
HW PINS
XX
1
1
1
0
0
SYNEN
H
H
H
L
X
X
BIT LOCATION
CC
0 = LSB
) Bypassing
BUFEN
0
1
2
3
4
5
H/L
H/L
H/L
H/L
X
X
PWDN
A logic high doubles the charge pump current selected through registers
CP1 and CP0. Logic low sets the charge-pump current to the value
selected by registers CP1 and CP0.
Unused.
High enables the VCO buffer. Low disables this output.
Low enables SW_MUTE mode, which shuts down the RF circuits while
leaving the 3-wire interface, register, and PLL circuits active.
Low enables register-based shutdown. This mode shuts down all circuits
except the 3-wire interface and internal registers.
Logic high disables the sigma-delta modulator. Logic low enables the
sigma-delta modulator for normal operation.
SOFTWARE CONTROL
H
H
H
H
X
L
TXEN
BITS
and share no common vias with any other ground con-
nection. See the Typical Operating Circuit for suggest-
ed bypass component values.
H
H
X
L
X
X
BUFEN
H/L
H/L
H/L
H/L
X
X
All circuits active.
Modulator circuits active. Synthesizer
blocks disabled. Mode is used with external
PLL circuit.
Serial interface and synthesizer blocks
active. RF and modulator blocks disabled.
Mode is used to gate RF ON/OFF with
external logic control.
Serial interface and synthesizer blocks all
active. Modulator blocks disabled. Mode is
used to gate RF ON/OFF with software
control.
All circuits disabled. Lowest current mode
of operation.
Serial interface and registers active, all
other circuits inactive regardless of the
state of the HW pins with the exception of
HW_SHDN.
FUNCTION
DESCRIPTION