MAX1471_05 Datasheet, PDF (4/26 Pages) Maxim Integrated Products – 315MHz/434MHz Low-Power, 3V/5V ASK/FSK Superheterodyne Receiver

315MHz/434MHz Low-Power, 3V/5V
ASK/FSK Superheterodyne Receiver
AC ELECTRICAL CHARACTERISTICS (continued)
(Typical Application Circuit, AV_DD = DV_DD = HV_IN = +2.4V to +3.6V, f_RF = 300MHz to 450MHz, T_A = -40°C to +125°C, unless otherwise
noted. Typical values are at AV_DD = DV_DD = HV_IN = +3.0V, f_RF = 434 MHz, T_A = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
ANALOG BASEBAND
Maximum Data Filter Bandwidth
Maximum Data Slicer Bandwidth
Maximum Peak Detector
Bandwidth
SYMBOL
BW_DF
BW_DS
BW_PD
Maximum Data Rate
CRYSTAL OSCILLATOR
Crystal Frequency
Frequency Pulling by V_DD
Maximum Crystal Inductance
Crystal Load Capacitance
f_XTAL
DIGITAL INTERFACE TIMING (see Figure 8)
Minimum SCLK Setup to Falling
Edge of CS
t_SC
Minimum CS Falling Edge to
SCLK Rising-Edge Setup Time
Minimum CS Idle Time
Minimum CS Period
t_CSS
t_CSI
t_CS
Maximum SCLK Falling Edge to
Data Valid Delay
t_DO
CONDITIONS
Manchester coded
Nonreturn to zero (NRZ)
MIN TYP MAX UNITS
50
kHz
100
kHz
50
kHz
33
kbps
66
9.04
13.728 MHz
3
ppm/V
50
µH
3
pF
30
ns
30
ns
125
ns
2.125
µs
80
ns
Minimum Data Valid to SCLK
Rising-Edge Setup Time
t_DS
30
ns
Minimum Data Valid to SCLK
Rising-Edge Hold Time
Minimum SCLK High Pulse Width
Minimum SCLK Low Pulse Width
Minimum CS Rising Edge to
SCLK Rising-Edge Hold Time
Maximum CS Falling Edge to
Output Enable Time
Maximum CS Rising Edge to
Output Disable Time
t_DH
t_CH
t_CL
t_CSH
t_DV
t_TR
30
ns
100
ns
100
ns
30
ns
25
ns
25
ns
Note 1: Production tested at T_A = +85°C. Guaranteed by design and characterization over entire temperature range.
Note 2: Guaranteed by design and characterization. Not production tested.
Note 3: The oscillator register (0x3) is set to the nearest integer result of f_XTAL / 100kHz (see the Oscillator Frequency Register section).
Note 4: Input impedance is measured at the LNAIN pin. Note that the impedance at 315MHz includes the 15nH inductive degeneration
from the LNA source to ground. The impedance at 434MHz includes a 10nH inductive degeneration connected from the LNA
source to ground. The equivalent input circuit is 50Ω in series with 2.2pF. The voltage conversion gain is measured with the
LNA input matching inductor, the degeneration inductor, and the LNA/mixer resonator in place, and does not include the IF fil-
ter insertion loss.
4 _______________________________________________________________________________________