max2140 Maxim Integrated Products, Inc., max2140 Datasheet - Page 9

• Manufacturer Part Number: max2140
• Description: Max2140 Complete Sdars Receiver
• Manufacturer: Maxim Integrated Products, Inc.

12–15, 23,
26, 27, 30,
17, 19, 37,
18, 20, 36,
21, 22, 34,
1, 4, 8,
31, 40
10, 11
41, 42
43, 44
PIN
2, 3
5, 6
16
39
38
35
24
25
28
29
32
33
—
7
9
VCC_FE3, VCC_VCO,
VCC_BE2, VCC_BE3,
VCC_FE2, VCC_BE1,
VCC_FE0, VCC_FE1,
VINANT, VCC_XTAL,
IF2II-, IF2II+, IF2QI+,
IF2QO+, IF2QO-
VCC_D, VCC_A,
IFOUT+, IFOUT-
QOUT+, QOUT-
IF2IO-, IF2IO+,
IOUT-, IOUT+,
RFIN+, RFIN-
Exposed Pad
I
IFIN+, IFIN-
2
RFAGC_C
VOUTANT
AGCPWM
CA2, I
SCL, SDA
VCC_BE4
VCCREG
REFOUT
CPOUT
VTUNE
_______________________________________________________________________________________
NAME
IF2QI-
LOCK
XTAL
2
CA1
Power Supplies. Bypass to ground with capacitors as close to the pins as possible.
Differential RF Inputs. Accept RF input signal from the SDARS cabled antenna with a 50Ω to
100Ω balun.
Differential First IF Output. Connect an external SAW filter to the IF output.
RF AGC Power-Detector Output. Set the RF AGC attack and decay response times.
IF AGC Control Voltage Input. Input from the filtered PWM AGC control signal from the SDARS
channel-decoder IC.
Differential First IF Input
Overcurrent-Protected Unregulated DC Supply Output. Provides DC power supply to the
antenna module.
Differential Baseband DC Blocking Outputs.
IF2IO- = Inverting in-phase baseband output. AC couple to pin 18.
IF2IO+ = Noninverting in-phase baseband output. AC couple to pin 20.
IF2QO+ = Noninverting quadrature baseband output. AC couple to pin 36.
IF2QO- = Inverting quadrature baseband output. AC couple to pin 38.
Differential Baseband DC Blocking Inputs.
IF2II- = Inverting in-phase baseband input. AC couple to pin 16.
IF2II+ = Noninverting in-phase baseband input. AC couple to pin 19.
IF2QI+ = Noninverting quadrature baseband input. AC couple to pin 37.
IF2QI- = Inverting quadrature baseband input. AC couple to pin 39.
Differential I/Q Baseband Outputs.
IOUT- = Inverting in-phase baseband output.
IOUT+ = Noninverting in-phase baseband output.
QOUT+ = Noninverting quadrature baseband output.
QOUT- = Inverting quadrature baseband output.
Crystal Reference Input
Buffered System Clock Output. Provides clock signal to the SDARS channel-decoder IC.
Digital Logic Output to the System Controller. Indicates the lock status of the internal PLL.
VCO Charge-Pump Output
Regulated Supply Voltage for the VCO
High-Impedance VCO Tuning Input
I
I
Exposed Paddle. Connect to ground.
2
2
C Input Signals. Define the MAX2140 I
C-Compatible Programming Input. Connect to an I
Complete SDARS Receiver
2
C device address.
FUNCTION
2
C-compatible bus.
Pin Description
9