MAX2991ECM+T Maxim Integrated Products, MAX2991ECM+T Datasheet

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MAX2991ECM+T

Manufacturer Part Number
MAX2991ECM+T
Description
IC TXRX FRONT-END 48LQFP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX2991ECM+T

Function
Analog Front-End Transceiver
Interface
SPI Serial
Number Of Circuits
1
Voltage - Supply
3 V ~ 3.6 V
Current - Supply
36mA, 70mA
Power (watts)
1.54W
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
48-LQFP
Includes
Automatic Gain Control (AGC)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
19-5125; Rev 0; 1/10
The MAX2991 power-line communication analog front-
end (AFE) is a state-of-the-art integrated circuit that
delivers high integration and superb performance, while
reducing the total system cost. The MAX2991 is the first
AFE specifically designed for OFDM (orthogonal fre-
quency division multiplexing) modulated signal transmis-
sion over power lines. Operating in the 10kHz to 490kHz
band, the programmable filters allow compliance with
CENELEC, FCC, and ARIB standards using the same
device.
The MAX2991 transceiver provides two main paths:
transmit (Tx) path and receive (Rx) path. The transmit
path injects an OFDM modulated signal into the AC or
DC line. The transmit path is composed of a digital IIR
filter, digital-to-analog converter (DAC), followed by a
lowpass filter, and a preline driver. The receiver path is
for the signal enhancement, filtering, and digitization of
the received signal. The receiver is composed of a low-
pass and a highpass filter, a two-stage automatic gain
control (AGC), and an analog-to-digital converter (ADC).
The integrated AGC maximizes the dynamic range of the
signal up to 60dB, while the lowpass filter removes any
out-of-band noise, and selects the desired frequency
band. The ADC converts the enhanced and amplified
input signal to a digital format. An integrated offset can-
cellation loop minimizes the DC offset.
The MAX2991, along with the MAX2990 PLC baseband
modem, delivers the most cost-effective data communi-
cation solution over power-line networks in the market.
The MAX2991 is specified over the -40NC to +85NC
temperature range and is available in a 48-pin LQFP
package.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Power-Line Communications (PLC) Integrated
APPLICATION
HOST
µC
_______________________________________________________________ Maxim Integrated Products 1
General Description
INTERFACE
MCU
MAX2990
PHY
Analog Front-End Transceiver
Tx BLOCK
Rx BLOCK
MAX2991
AFE
S
S
S
S
S
S
S
S
S
+Denotes a lead(Pb)-free/RoHS-compliant package.
MAX2991ECM+
Optimized to Operate with the MAX2990 PLC
Baseband
Integrated Band Select Filter, AGC, and 10-Bit
ADC for Rx Path
Integrated Wave-Shaping Filter, Programmable
Predriver Gain, and 10-Bit DAC for Tx Path
Variable Sampling Rate Up to 1.2Msps
Built-In 60dB Dynamic Range AGC and DC Offset
Cancellation
Programmable Filters Operate in the CENELEC,
FCC, and ARIB Frequency Bands
Single 3.3V Power Supply
70mA Typical Supply Current (Half-Duplex Mode)
Extended Operating Temperature Range
Automatic Meter Reading
Home Automation
Heating Ventilation and Air Conditioning (HVAC)
Building Automation
Industrial Automation
Lighting Control
Sensor Control and Data Acquisition (SCADA)
Remote Monitoring and Control
Security Systems/Keyless Entry
Smart Grid
PART
DRIVER
LINE
Typical Application Circuit
-40NC to +85NC
TEMP RANGE
Ordering Information
COUPLER
LINE
Applications
AC POWER
PIN-PACKAGE
LINE
Features
48 LQFP

Related parts for MAX2991ECM+T

MAX2991ECM+T Summary of contents

Page 1

... MAX2990 MCU HOST APPLICATION INTERFACE µC _______________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Analog Front-End Transceiver Optimized to Operate with the MAX2990 PLC S Baseband Integrated Band Select Filter, AGC, and 10-Bit ...

Page 2

Power-Line Communications (PLC) Integrated Analog Front-End Transceiver ABSOLUTE MAXIMUM RATINGS V to GND ..........................................................-0.3V to +3.9V DD All Other Inputs/Outputs .......................................-0.3V to +3.9V Continuous Power Dissipation (T = +70NC) A 48-Pin LQFP (derate 25mW/NC above +70NC) ..........1535mW Stresses beyond those ...

Page 3

Power-Line Communications (PLC) Integrated ELECTRICAL CHARACTERISTICS (continued 3.3V 0V -40NC to +85NC, unless otherwise noted. Typical values are GND A PARAMETER SYMBOL RECEIVER (Note 4) Input Impedance Receiver Dynamic Range Lowpass ...

Page 4

Power-Line Communications (PLC) Integrated Analog Front-End Transceiver Tx FILTER TRANSFER FUNCTION (CENELEC -10 -20 -30 -40 -50 - FILTER TRANSFER FUNCTION (FCC -10 -20 -30 -40 -50 -60 -70 50 200 ...

Page 5

Power-Line Communications (PLC) Integrated SPI™ TIMING CHARACTERISTICS (Figure 2) PARAMETER SYMBOL SCLK Frequency SCLK Clock Period SCLK Pulse-Width High SCLK Pulse-Width Low CS Low to SCLK Setup t CS Low After SCLK Hold CS High to SCLK Setup t CS ...

Page 6

Power-Line Communications (PLC) Integrated Analog Front-End Transceiver AFE INTERFACE TIMING CHARACTERISTICS (Rx) (Figure 4) PARAMETER SYMBOL RXCLK Frequency RXCLK Clock Period RXCLK Pulse-Width High RXCLK Pulse-Width Low RXCONV Low to RXCLK Setup RXCONV Low After RXCLK Hold t RXCONV Pulse-Width ...

Page 7

Power-Line Communications (PLC) Integrated AFE INTERFACE TIMING CHARACTERISTICS (Tx) (Figure 6) PARAMETER SYMBOL TXCLK Frequency TXCLK Clock Period TXCLK Pulse-Width High TXCLK Pulse-Width Low TXCONV Low to TXCLK Setup t TXCONV Low After TXCLK Hold t TXCONV High to TXCLK ...

Page 8

Power-Line Communications (PLC) Integrated Analog Front-End Transceiver V DD1 GND1 RXINP RXINN I.C. I.C. I.C. I.C. TXOUTP TXOUTN GND2 V DD2 PIN NAME Analog Power-Supply 1. Bypass to GND1 with 100nF and 10FF capacitors in parallel located close to 1 ...

Page 9

Power-Line Communications (PLC) Integrated PIN NAME Active-High AGC Carrier-Select Enable. Drive AGCCS high to initiate the internal AGC adaptation 14 AGCCS timer. 15 SCLK Host SPI Serial-Clock Input 16 SDIN Host SPI Serial-Data Input 17 Active-Low Host SPI Chip-Select Input ...

Page 10

Power-Line Communications (PLC) Integrated Analog Front-End Transceiver PIN NAME 43 Highpass Filter Negative Input HPFIN 44 HPFIN Highpass Filter Positive Input 45 Lowpass Filter Negative Output LPFOUT 46 LPFOUT Lowpass Filter Positive Output Active-Low Reset Input. Drive RST low to ...

Page 11

Power-Line Communications (PLC) Integrated Detailed Description The MAX2991 power-line AFE integrated circuit is a state-of-the-art CMOS device that delivers high perfor- mance and low cost. This highly integrated design com- bines an ADC, DAC, signal conditioning, and predriver as shown ...

Page 12

Power-Line Communications (PLC) Integrated Analog Front-End Transceiver AGC Control Signals (AGCCS) The AGCCS signal controls the AGC circuit of the receive path in the MAX2991. A logic-low on AGCCS sets the gain circuit on the input signal to continuously adapt ...

Page 13

Power-Line Communications (PLC) Integrated Table 1. Register Map (continued) REGISTER WIDTH ADDRESS IIR0B2 <15:0> IIR0A1 <15:0> IIR0A2 <15:0> IIR1CONF <8:0> IIR1B0 <15:0> IIR1B1 <15:0> IIR1B2 <15:0> IIR1A1 <15:0> IIR1A2 <15:0> DPTUN1 <11:0> DPTUN2 <11:0> FRZTIME <11:0> Address 0x00: Rx Configuration ...

Page 14

Power-Line Communications (PLC) Integrated Analog Front-End Transceiver Address 0x01: Tx Configuration (TXCONF<15:0>), Default: 0x282B LOCATION BIT NAME (0 = LSB) ENTXBEN 0 PREDRVGAIN 4–1 <3:0> — 5 TXLPFBW<1:0> — 12–8 PREDRDYN 13 TXCONV_EDGE 14 TXDATA_DLY 15 Address 0x03: ...

Page 15

Power-Line Communications (PLC) Integrated Address 0x04: Process Tuner Adjust (PTUN2<13:0>), Default: 0x0000 LOCATION BIT NAME (0 = LSB) PTUNERXADJ 6–0 <6:0> PTUNETXADJ 13–7 <6:0> Address 0x07: AGC Control 3 (AGC3<13:0>), Default: 0x0320 LOCATION BIT NAME (0 = LSB) — 10–0 ...

Page 16

Power-Line Communications (PLC) Integrated Analog Front-End Transceiver Address 0x10: IIR0 A1 Coefficient (IIR0A1<15:0>), Default: 0xCEFF LOCATION BIT NAME (0 = LSB) IIR0_A1<15:0> 15–0 Address 0x11: IIR0 A2 Coefficient (IIR0A2<15:0>), Default: 0x1613 LOCATION BIT NAME (0 = LSB) IIR0_A2<15:0> 15–0 Address ...

Page 17

Power-Line Communications (PLC) Integrated Address 0x16: IIR1 A1 Coefficient (IIR1A1<15:0>), Default: 0xC7F6 LOCATION BIT NAME (0 = LSB) IIR1_A1<15:0> 15–0 Address 0x17: IIR1 A2 Coefficient (IIR1A2<15:0>), Default: 0x1F4D LOCATION BIT NAME (0 = LSB) IIR1_A2<15:0> 15–0 Address 0x18: Process Tuner ...

Page 18

Power-Line Communications (PLC) Integrated Analog Front-End Transceiver Table 2. Process Tuner Configuration, PTUN1<5:0>, Address: 0x03, Default: 0x13 BIT NAME LOCATION PTCLKMUX 4, 3 Table 3. Summary of Calculations Needed when Process Tuner Clock Rate is Changed CLOCK RATE COUNTER LIMIT ...

Page 19

Power-Line Communications (PLC) Integrated Indirect Write and Read Configuration Mode The MAX2990’s single write configuration mode allows sending an arbitrary 16-bit SPI frame to the MAX2991’s AFE interface. This mode allows configuring the internal registers without using the host SPI. ...

Page 20

Power-Line Communications (PLC) Integrated Analog Front-End Transceiver Dynamic Predriver Gain Programming During the Data Transmission During normal data transmission bit used to indicate that a normal data packet is received and bits C2, C1, and C0 ...

Page 21

Power-Line Communications (PLC) Integrated Table 7. Rx and Tx Filter Adjustment for Different 3dB Frequencies Rx 3dB FREQUENCY Tx 3dB FREQUENCY (kHz) 130 140 146 155 Table 8. IIR Coefficients for CENELEC A Band (MAX2991 Default Mode) COEFFICIENT NAME FLOATING ...

Page 22

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 22 2010 Maxim Integrated Products © ...

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