Typical operating characteristics, Ac electrical characteristics (continued) – Rainbow Electronics MAX7033 User Manual
Page 5
MAX7033
315MHz/433MHz ASK Superheterodyne
Receiver with AGC Lock
_______________________________________________________________________________________
5
Note 1:
100% tested at T
A
= +25
°C. Guaranteed by design and characterization over temperature.
Note 2:
IRSEL is internally set to 375MHz IR mode. It can be left open when the 375MHz image-rejection setting is desired. Bypass
to AGND with a 1nF capacitor in a noisy environment.
Note 3:
BER = 2 x 10
-3
, Manchester encoded, data rate = 4kbps, IF bandwidth = 280kHz.
Note 4:
Input impedance is measured at the LNAIN pin. Note that the impedance includes the 15nH inductive degeneration con-
nected from the LNA source to ground. The equivalent input circuit is 50
Ω in series with 2.2pF.
Note 5:
Crystal oscillator frequency for other RF carrier frequency within the 300MHz to 450MHz range is (f
RF
- 10.7MHz) / 64 for
XTALSEL = 0V, and (f
RF
- 10.7MHz) / 32 for XTALSEL = V
DD5
.
AC ELECTRICAL CHARACTERISTICS (continued)
(Typical Application Circuit, AV
DD
= DV
DD
= V
DD5
= +3.0V to +3.6V, all RF inputs are referenced to 50
Ω, f
RF
= 315MHz, T
A
= -40°C
to +105°C, unless otherwise noted. Typical values are at AV
DD
= DV
DD
= V
DD5
= +3.3V and T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Maximum Load Capacitance
C
LOAD
10
pF
Output High Voltage
V
DD5
V
Output Low Voltage
0
V
CRYSTAL OSCILLATOR
V
XTALSEL
= 0V
6.6128
f
RF
= 433MHz
V
XTALSEL
= V
DD5
13.2256
V
XTALSEL
= 0V
4.7547
Crystal Frequency (Note 5)
f
XTAL
f
RF
= 315MHz
V
XTALSEL
= V
DD5
9.5094
MHz
Crystal Tolerance
50
ppm
Input Capacitance
From each pin to ground
6.2
pF
Typical Operating Characteristics
(Typical Application Circuit , AV
DD
= DV
DD
= V
DD5
= +3.3V, f
RF
= 315MHz, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX7033 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
3.5
3.4
3.3
3.2
3.1
4.2
4.4
4.6
4.8
5.0
5.2
5.4
5.6
5.8
6.0
4.0
3.0
3.6
+85
°C
+105
°C
+25
°C
-40
°C
SUPPLY CURRENT
vs. RF FREQUENCY
MAX7033 toc02
RF FREQUENCY (MHz)
SUPPLY CURRENT (mA)
450
400
300
350
3.5
4.0
4.5
5.0
6.0
5.5
6.5
7.0
3.0
250
500
+105
°C
+85
°C
-40
°C
+25
°C
BIT-ERROR RATE
vs. PEAK RF INPUT POWER
MAX7033 toc03
PEAK RF INPUT POWER (dBm)
BIT-ERROR RATE (%)
-116
-118
-120
-122
-124
-126
-128
0.1
1
10
100
0.01
-130
-114
f
RF
= 433MHz
f
RF
= 315MHz