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MAX2140ETH+T

P1-P3P4-P6P7-P9P10-P12P13-P13
General Description
The MAX2140 complete receiver is designed for satellite
digital audio radio services (SDARS). The device
includes a fully monolithic VCO and only needs a SAW at
the IF and a crystal to generate the reference frequency.
To form a complete SDARS radio, the MAX2140
requires only a low-noise amplifier (LNA), which can be
controlled by a baseband controller. The small number
of external components needed makes the MAX2140-
based platform the lowest cost and the smallest solu-
tion for SDARS.
The receiver includes a self-contained RF AGC loop
and baseband-controlled IF AGC loop, effectively pro-
viding a total dynamic range of over 92dB.
Channel selectivity is ensured by the SAW filter and by
on-chip monolithic lowpass filters.
The fractional-N PLL allows a very small frequency
step, making possible the implementation of an AFC
loop. Additionally, the reference is provided by an
external XTAL and on-chip oscillator. A reference buffer
output is also provided.
A 2-wire interface (I
2
C-bus compatible) programs the
circuit for a wide variety of conditions, providing fea-
tures such as:
•Programmable gains
•Lowpass filters tuning
•Individual functional block shutdown
The MAX2140 minimizes the requirement on the base-
band controller. No compensation or calibration proce-
dures are required. The device is available in a 7mm
✕
7mm 44-pin thin QFN package.
Applications
Satellite Digital Audio Radio Services (SDARS)
2.4GHz ISM Radios
Features
♦ Integrated Receiver, Requires Only One SAW
Filter
♦ Self-Contained RF AGC Loop
♦ Differential I/Q Interface
♦ Complete Integrated Frequency Generation
♦ Bias Supply for External LNAs
♦ Overcurrent Protection
♦ Low-Power Standby Mode
♦ Very Small 44-Pin Thin QFN Package
MAX2140
Complete SDARS Receiver
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-3123; Rev 3; 10/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
EVALUATION KIT
AVAILABLE
PART TEMP RANGE
PIN-PACKAGE
MAX2140ETH
-40°C to +85°C
44 Thin QFN-EP*
MAX2140ETH+
-40°C to +85°C
44 Thin QFN-EP*
MAX2140
1
2
4
3
5
6
7
IF2QO-
SCL
IF2QI-
IF2QO+
RFAGC_C
VCC_FE0
RFIN-
XM TUNER
I
2
CA1
I
2
CA2
SDA
IFOUT-
IFOUT+
VCC_FE1
RFIN+
CHP
1/N
1/R
/4/8
QUAD
PFD
17
IF2II-
IF2IO+
IF2IO-
IF2II+
VINANT
VOUTANT
16
VCC_BE1
13 14 15
8
9
10
11
21
VCC_BE2
IOUT-
IOUT+
2019 2212 18
33
32
30
31
29
28
27
26
25
24
23
353637 3438394041424344
VCC_FE2
IFIN-
IFIN+
IF2QI+
VCC_FE3
QOUT-
QOUT+
VCC_D
VCC_BE4
VCC_A
LOCK
CPOUT
VCCREG
REFOUT
VCC_XTAL
XTAL
VTUNE
VCC_BE3
AGCPWM
LPF HPF
LPF HPF
RF
AGC
VCC_VCO
Σ Δ - MOD
ACTUAL SIZE
7mm x 7mm
Block Diagram/Pin Configuration
*EP = Exposed paddle.
+Denotes lead-free package.
MAX2140
Complete SDARS Receiver
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= 3.1V to 3.6V; VINANT ≥ V
CC
, VOUTANT in open circuit, T
A
= -40°C to +85°C. Typical values are at V
CC
= 3.3V, VINANT =
3.3V, and T
A
= +25°C, unless otherwise noted.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
CC_XX
to GND..................................................... -0.3V to +4.3V
VINANT to GND.................................................... -0.3V to +5.6V
AGCPWM to GND ................................................ -0.3V to +3.0V
Digital Input Current ........................................................ ±10mA
Maximum VSWR Without Damage ........................................ 4:1
Maximum VSWR Without Oscillations ................................... 4:1
All Other Pins ............................................... -0.3V to V
CC
+ 0.3V
Continuous Power Dissipation (T
A
= +70°C)
44-Pin TQFN (derate 26.31mW/°C above +70°C) ... 2105mW
Operating Temperature Range ..........................-40°C to +85°C
Junction Temperature .....................................................+150°C
Theta J
C
..........................................................................12°C/W
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
CC
3.1 3.3 3.6
Supply Voltage Range (Note 2)
VINANT 3.1 3.3 5.3
V
I
CC
All blocks on 150 180 mA
Operating Supply Current
I
SHDN
All blocks off 30 µA
Lock Indicator High (Locked) V
IH_LK
V
CC
- 0.5 V
Lock Indicator Low (Unlocked) V
IL_LK
0.5 V
Digital Input-Logic High V
IH
V
CC
- 0.5 V
Digital Input-Logic Low V
IL
0.5 V
Input Current for Digital Control
Pins
I
DIG
-1 +1 µA
Input Current for AGCPWM I
AGCPWM
-10 +290 µA
Voltage Drop VINANT to
VOUTANT in Normal Operating
Mode
V
ANTDC-
DROP
Maximum current sink at VOUTANT is
150mA
0.35 V
Current Sink at VOUTANT to Flag
Bit ACP = 1
I
ANTDC_H
VOUTANT shorted to ground (Note 4) 195 500 mA
Current Sink at VOUTANT to Flag
Bit AND = 1
I
ANTDC_L
12 20 30 mA
CAUTION! ESD SENSITIVE DEVICE
MAX2140
Complete SDARS Receiver
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS
(MAX2140 EV kit, current drawn at VOUTANT, I
VOUTANT
= 150mA max, V
CC
= 3.1V to 3.6V, VINANT = 3.1V to 5.3V, f
RF
= 2320MHz
to 2345MHz, f
LO
= 2076MHz, T
A
= -40°C to +85°C. Typical values are at V
CC
= VINANT = 3.3V, f
RF
= 2338MHz, T
A
= +25°C, unless
otherwise noted.) (Note 2)
Interstage (IF) 259MHz SAW filter specification: insertion loss = 19dB max, 9.3MHz to 12MHz from center attenuation = 24dB min,
beyond 12MHz from center attenuation = 40dB min.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
GENERAL RECEIVER
Minimum Input RF Power to
Produce 20mV
P-P
(Differential) at
I and Q Baseband Outputs
P
MIN
IF AGC is set at maximum gain,
bit HPF = 0 (Note 4)
-91 -84 dBm
Maximum Input RF Power to
Produce 400mV
P-P
(Differential)
at I and Q Baseband Outputs
P
MAX
RF AGC threshold: RF_AGC_TRIP =
-17dBm; IF AGC is set at minimum gain, bit
HPF = 0
+3 dBm
P
LK_H
LO-related spurious > 2GHz -66
LO to RF Input Leakage
P
LK_L
LO-related spurious < 2GHz -38
dBm
RF AGC is at maximum gain,
IF AGC is at reference gain
8.5 10.4
RF AGC is at maximum gain,
IF AGC is at reference gain -10dB
9.3 11.7
RF AGC is at maximum gain -5dB,
IF AGC is at reference gain
13.3 15.5
Noise Figure (Notes 3, 5) NF
RF AGC is at maximum gain -10dB,
IF AGC is at reference gain
17.8 21.5
dB
RF AGC is at maximum gain,
IF AGC is at reference gain
-32
RF AGC is at maximum gain,
IF AGC is at reference gain -5dB
-27
RF AGC is at maximum gain -30dB,
IF AGC is at reference gain -43dB
+9
In-Band Input IP3 (Notes 5, 6) I_IIP3
RF AGC is at maximum gain -20dB,
IF AGC is at reference gain -53dB
+6
dBm
RF AGC is at maximum gain,
IF AGC is at reference gain
-9
RF AGC is at maximum gain -7dB,
IF AGC is at reference gain
-3
Out-of-Band Input IP3
(Notes 5, 7)
O_IIP3
RF AGC is at maximum gain -25dB,
IF AGC is at reference gain
+12
dBm
P1-P3P4-P6P7-P9P10-P12P13-P13

MAX2140ETH+T

Mfr. #:
Buy MAX2140ETH+T
Manufacturer:
Maxim Integrated
Description:
RF Receiver Complete SDARS Receiver
Lifecycle:
New from this manufacturer.
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