MAX2981 Datasheet PDF - Maxim Integrated Products

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MAX2981
Maxim Integrated Products

Part Number MAX2981
Description Integrated Powerline Communication Analog Front-End Transceiver And Line Driver
Page 12 Pages


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19-4736; Rev 0; 7/09
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Integrated Powerline Communication Analog
Front-End Transceiver and Line Driver
General Description
The MAX2981 powerline communication analog front-
end (AFE) and line-driver IC is a state-of-the-art CMOS
device that delivers high performance at low cost. This
highly integrated design combines an analog-to-digital
converter (ADC), digital-to-analog converter (DAC),
adaptive gain control (AGC), filters, and line driver on a
single chip. The MAX2981 substantially reduces previ-
ously required system components and complies with
the HomePlug® 1.0 standard.
Combined with Maxim’s integrated PHY/MAC digital
baseband, the device delivers the most flexible and
cost-effective solution. The advanced design of the
MAX2981 allows operation without external control,
enabling simplified connection to a variety of HomePlug
1.0 digital PHY ICs.
The MAX2981 is specified over the -40°C to +105°C
automotive temperature range and is offered in a 64-pin
lead-free LQFP package. The device is qualified to the
AEC-Q100 Rev F automotive standard.
Applications
Local Area Networking (LAN)
Broadband-over-Powerline (BPL)
Remote Monitoring and Control
Energy Management
Industrial Automation
Building Automation
IPTV Distribution
Typical Operating Circuit appears at end of data sheet.
HomePlug is a registered trademark of HomePlug Powerline
Alliance, Inc.
Features
o HomePlug 1.0 Compliant
o Fully Integrated AFE and Line Driver
o Fully Compatible with the MAX2982/MAX2986
o Pin-to-Pin Compatible with the MAX2980
o Seamless Interface to Third-Party PHY ICs
o Fully Integrated, 10-Bit, 50Msps ADC and DAC
o 56dB Adaptive Gain Control
o Line Impedance Drive Capability as Low as 10Ω
o Line-Driver Bypass Mode
o 220mA in Rx Mode and 150mA in Tx Mode at 3.3V
o -40°C to +105°C Operating Temperature Range
o AEC-Q100 Rev F (Automotive) Qualified
o 64-Pin LQFP Package
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX2981GCB/V+
-40°C to +105°C
64 LQFP
/V denotes an automotive qualified part.
+Denotes a lead(Pb)-free/RoHS-compliant part.
Pin Configuration
AGND 1
AVDD 2
PLIP 3
PLIN 4
AGND 5
AVDD 6
CEXT 7
REXT 8
AGND 9
AGND 10
PLOP 11
AVDD 12
AGND 13
PLON 14
AVDD 15
AVDD 16
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
+
MAX2981
48 DAD0
47 DGND
46 DAD1
45 DAD2
44 DVDD3
43 DAD3
42 DAD4
41 DVDD3
40 DGND
39 DAD5
38 DAD6
37 DVDD3
36 DAD7
35 DAD8
34 DGND
33 DAD9
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
LQFP
________________________________________________________________ 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.



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Integrated Powerline Communication Analog
Front-End Transceiver and Line Driver
ABSOLUTE MAXIMUM RATINGS
AVDD to AGND .....................................................-0.3V to +3.9V
DVDD3 to DGND ...................................................-0.3V to +3.9V
DVDD to DGND .....................................................-0.3V to +2.8V
AGND to DGND.....................................................-0.3V to +0.3V
All Other Pins..............................................-0.3V to (VDD + 0.3V)
Current into Any Pin........................................................±100mA
Short-Circuit Duration (VREGOUT to AGND) ........................10ms
Continuous Power Dissipation (TA = +70°C)
64-Pin LQFP (derate 25mW/°C above +70°C)...........2000mW
Operating Temperature Range .........................-40°C to +105°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-40°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
CAUTION! ESD SENSITIVE DEVICE
ELECTRICAL CHARACTERISTICS
(VAVDD = VDVDD3 = +3.3V, DVDD = REGOUT, VAGND = VDGND = VSHRCV = 0V, TA = -40°C to +105°C, unless otherwise noted.
Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Analog Supply Voltage
Digital Supply Voltage
Digital Supply Voltage
SYMBOL
VAVDD
VDVDD3
VDVDD
(Note 2)
CONDITIONS
MIN TYP MAX UNITS
3.0 3.6 V
3.0 3.6 V
2.4 V
Quiescent Supply Current
IAVDD
Receive mode, transmitter disabled, no
signal applied
Transmit mode, receiver disabled, no signal
and no load applied
220
150
mA
Standby Supply Current
No clock
6 mA
Regulator Output
Output-Voltage High
Output-Voltage Low
LOGIC INPUT
VREGOUT
VOH
VOL
ISOURCE = 5mA
ISINK = 5mA
2.4
2.4
0.4
V
V
V
Input High Voltage
VIH
Input Low Voltage
VIL
Input Leakage Current
IIH
IIL
ANALOG-TO-DIGITAL CONVERTER (ADC)
Resolution
N
Integral Nonlinearity
INL
VIH = VDVDD
VIL = 0V
(Note 3)
2.0 V
0.8 V
+5
µA
-5
10 Bits
2.3 LSB
Differential Nonlinearity
DNL
0.8 LSB
Two-Tone 3rd-Order Distortion
IM3
DIGITAL-TO-ANALOG CONVERTER (DAC)
Resolution
N
Integral Nonlinearity
INL
Two tones at 17MHz and 18MHz at input
1VP-P differential voltage
(Note 3)
-51.5
10
0.5
dBc
Bits
LSB
Differential Nonlinearity
DNL
0.4 LSB
Two-Tone 3rd-Order Distortion
IM3 Two tones at 17MHz and 18MHz at output
1VP-P differential voltage
-54 dBc
2 _______________________________________________________________________________________



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Integrated Powerline Communication Analog
Front-End Transceiver and Line Driver
ELECTRICAL CHARACTERISTICS (continued)
(VAVDD = VDVDD3 = +3.3V, DVDD = REGOUT, VAGND = VDGND = VSHRCV = 0V, TA = -40°C to +105°C, unless otherwise noted.
Typical values are at TA = +25°C.) (Note 1)
PARAMETER
RECEIVER
Common-Mode Voltage
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
1.6 V
Input Impedance
ZIN
Between PLIP or PLIN and 0V at 12MHz
(Note 3)
875
Two-Tone 3rd-Order Distortion
Receiver Gain Range
IM3
Two tones at 17MHz and 18MHz at input
1VP-P differential voltage
Rx
-52 dBc
56 dB
Lowpass Filter -3dB Corner
Frequency
Lowpass Filter Ripple
(Note 3)
(Note 3)
23 MHz
2.6 dB
Highpass Filter -3dB Corner
Frequency
TRANSMITTER
Common-Mode Voltage
(Note 3)
2.4 MHz
1.6 V
Output Impedance
ZOUT
Between PLOP/PLON and 0V at 12.5MHz
(Note 3)
3
Output Voltage Swing
Predriver gain = -6dB at 12.5MHz, VP-P at
10single-ended output load
Predriver gain = 3dB at 12.5MHz, VP-P at
10single-ended output load
1.4
VP-P
4
Predriver Output Voltage Swing
Two-Tone 3rd-Order Distortion
Line driver in bypass mode, predriver gain
= 3dB; at 50single-ended output load
IM3 Two tones at 17MHz and 18MHz
1.4 VP-P
-50 -35 dBc
Lowpass Filter -3dB Corner
Frequency
Lowpass Filter Ripple
(Note 3)
(Note 3)
23 MHz
2.6 dB
Minimum Line Impedance Drive
Capability
Single-ended output
10
Predriver Line Impedance
Capability
Line driver is in bypass mode, single-ended
output
50
TIMING CHARACTERISTICS
CLK Frequency
50 MHz
CLK Fall to ADC Data Output
CLK Fall to DAC Data Latch Time
tADCO
tDACI
2 ns
3 ns
Note 1: Min and max values are guaranteed by design and characterization at TA = -40°C and production tested at TA = +25°C and
+105°C. Typical values are tested functionally at TA = +25°C.
Note 2: Bypass internal 2.4V regulator with 0.1µF capacitor to DGND.
Note 3: Typical values are guaranteed by design at TA = +25°C.
_______________________________________________________________________________________ 3



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Integrated Powerline Communication Analog
Front-End Transceiver and Line Driver
Pin Description
PIN
1, 5, 9, 10, 13,
17, 28, 32, 52,
53, 56, 57
NAME
AGND Analog Ground
FUNCTION
2, 6, 12, 15, 16,
29, 54, 55, 60
AVDD
Analog Power-Supply Voltage. AVDD supply range is 3.0V to 3.6V. Bypass AVDD with a 0.1µF
capacitor to AGND.
3
4
7
8
11
14
18
19, 26, 49
20, 27, 34, 40,
47, 50
21
22
PLIP
PLIN
CEXT
REXT
PLOP
PLON
REGOUT
DVDD
AC Powerline Positive Input
AC Powerline Negative Input
External Capacitor Connection. Connect a 10nF capacitor from CEXT to AGND.
External Resistor Connection. Connect a 25kresistor from REXT to AGND.
AC Powerline Positive Output
AC Powerline Negative Output
Voltage Regulator Output. Connect REGOUT to DVDD for normal operation.
Digital 2.4V Voltage Input. Connect DVDD to REGOUT for normal operation.
DGND Digital Ground
SDIO
SCLK
Serial Data Input/Output
Serial Clock Input
23 SHRCV Receiver Shutdown Control. Drive SHRCV high to power down the receiver. Drive low for normal
operation.
Read-Mode Enable Control. Drive ENREAD high to place the DAD[9:0] bidirectional buffers in read
24 ENREAD mode. Data is transferred from the digital PHY to the AFE DAC. ENREAD signal frames the
transmission.
25 CS Active-High Carrier-Select Input. Drive CS high to initiate the internal timer.
30, 37, 41, 44
31
DVDD3
CLK
Digital Power-Supply Voltage. DVDD3 supply range is 3.0V to 3.6V. Bypass DVDD3 to DGND with a
0.1µF capacitor as close as possible to the pin.
50MHz System Clock Input
33 DAD9 DAC/ADC Input/Output MSB Data Bit. Input/output of 10-bit, 50MHz bidirectional digital-to-analog
and analog-to-digital converter. Data is in binary format.
35
DAD8
DAC/ADC Input/Output Data Bit 8. Input/output of 10-bit, 50MHz bidirectional digital-to-analog and
analog-to-digital converter. Data is in binary format.
4 _______________________________________________________________________________________



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