MAX4951CCTP+T ,6Gbps SATA Bidirectional Redriver with Input Equalization, Preemphasis, and Advanced Power ManagementApplicationsthe corresponding outputs. Inputs and outputs are all internally 50I terminated and mus ..
MAX4951CTP+T ,6Gbps SATA Bidirectional Redriver with Input Equalization, Preemphasis, and Advanced Power Managementfeatures an independent channel dynamic power-down S High Level of Integration for Performancemode ..
MAX495CSA ,Single/Dual/Quad, Micropower, Single-Supply Rail-to-Rail Op AmpsFeatures' Low-Voltage Single-Supply Operation (+2.7V to +6V)The dual MAX492, quad MAX494, and singl ..
MAX495CSA ,Single/Dual/Quad, Micropower, Single-Supply Rail-to-Rail Op AmpsELECTRICAL CHARACTERISTICS(V = 2.7V to 6V, V = GND, V = 0V, V = V / 2, T = +25°C, unless otherwise ..
MAX495CSA ,Single/Dual/Quad, Micropower, Single-Supply Rail-to-Rail Op AmpsGeneral Description ________
MAX495CSA+ ,Single/Dual/Quad, Micropower, Single-Supply, Rail-to-Rail Op AmpsFeatures♦ Low-Voltage Single-Supply Operation (+2.7V to +6V)The dual MAX492, quad MAX494, and singl ..
MAX9123EUE ,Quad LVDS Line Driver with Flow-Through PinoutFeaturesThe MAX9123 quad low-voltage differential signaling♦ Flow-Through Pinout(LVDS) differential ..
MAX9123EUE ,Quad LVDS Line Driver with Flow-Through PinoutApplicationsLVDS SIGNALSDigital Copiers DSLAMsMAX9123 MAX9122*Laser Printers NetworkSwitches/Router ..
MAX9123EUE+ ,Quad LVDS Line Driver with Flow-Through PinoutApplications Circuit
MAX9123EUE+T ,Quad LVDS Line Driver with Flow-Through PinoutapplicationsSimplifies PC Board Layoutrequiring high data rates, low power, and low noise. TheReduc ..
MAX9124ESE ,Quad LVDS Line DriverApplications CircuitDigital Copiers DSLAMsLVDS SIGNALSLaser Printers NetworkSwitches/RoutersCell Ph ..
MAX9124ESE ,Quad LVDS Line Driverapplications requiring high Guaranteed 800Mbps Data Ratedata rates, low power, and low noise. The ..
MAX4951CCTP+-MAX4951CCTP+T-MAX4951CTP+T
6Gbps SATA Bidirectional Redriver with Input Equalization, Preemphasis, and Advanced Power Management
MAX4951Cbps SATA Bidirectional Redriver with Input Equalization,
Preemphasis, and Advanced Power Management
General Description
The MAX4951C dual-channel buffer with input equaliza-
tion and preemphasis is ideal to redrive internal serial-
ATA (SATA) 1i, 2i, and 3i signals as well as eSATA 1m
and 2m signals. The device features high electrostatic
discharge (ESD) Q8kV Human Body Model (HBM) pro-
tection. The device can be placed near a SATA connec-
tor on the motherboard to overcome board losses and
guarantee SATA compliance. The device is SATA speci-
fication version 3.0 (gold standard) compliant and can
also be pin-configured for SATA specification version 2.6
(gold standard) compliance.
The device features hardware SATA-drive cable detec-
tion that automatically places the device into a standby
mode that consumes less than 20FA (typ) standby cur-
rent when no drive is connected. In addition, the device
features an independent channel dynamic power-down
mode where power consumption is reduced when no
input signal is present. The device maintains output
common-mode levels to meet internal SATA version 3.0
standards and prevent delays when coming out of low-
power mode.
The device preserves signal integrity at the receiv er by
reestablishing full output levels and reducing the total
system jitter (TJ) by providing equalization. The device
features channel-independent digital preemphasis con-
trols to drive SATA outputs over longer trace lengths to
meet internal SATA specifications. SATA out-of-band
(OOB) signaling is supported using high-speed out-of-
band signal detection on the inputs, and squelch on
the corresponding outputs. Inputs and outputs are all
internally 50I terminated and must be AC-coupled to the
SATA controller IC and SATA device.
The device operates from a single +3.3V (typ) supply,
is available in a small, 4mm x 4mm TQFN package with
flow-through traces for ease of layout, and is specified
over the commercial 0NC to +70NC operating temperature
range. The MAX4951C is also pin compatible with the
MAX4951BE SATA 6.0Gbps redriver.
Benefits and Features
S Unique Design Saves Power Low-Power, 20µA (typ) SATA Cable/Drive Detect Dynamic Power Reduction Reduced Power Consumption When Idle Maintains Common-Mode Output Level No Loss of Data When Coming Out of Low- Power Mode
S Allows Design Flexibility Single +3.3V Supply Operation SATA 3i (6.0Gbps) and SATA 2i/2m (3.0Gbps)Compliant SATA 1i/1m (1.5Gbps) Compatible
S Permits Longer Trace Lengths Input Equalization Selectable Output Preemphasis
S High Level of Integration for Performance Excellent Input/Output Return Loss Up to 6Gbps Supports SATA 2i and 3i Output Levels Supports SATA OOB Signaling OOB Detection: 3ns (typ) High ESD Protection on All Pins: ±8kV (HBM)
S Saves Board Space On-Chip 50I Input/Output Termination Resistors Inline Signal Traces for Flow-Through Layout Space-Saving, 4mm x 4mm TQFN Package withExposed Pad Pin Compatible with the MAX4951BE
Applications
Laptop Computers
Servers
Desktop Computers
Docking Stations
Data Storage/Workstations
19-5815; Rev 0; 3/11
Ordering Information appears at end of data sheet.VALUATION KIT AVAILABLE
MAX4951Cbps SATA Bidirectional Redriver with Input Equalization,
Preemphasis, and Advanced Power Management
(All voltages referenced to GND, unless otherwise noted.)
VCC ...................................................................... -0.3V to +4.0V
AINP, AINM, BINP, BINM, EN, CAD,
MODE, PA, PB (Note 1) ........................-0.3V to (VCC + 0.3V)
Short-Circuit Output Current
BOUTP, BOUTM, AOUTP, AOUTM .............................Q30mA
Continuous Current at Inputs
AINP, AINM, BINP, BINM ..............................................Q5mA
Continuous Power Dissipation (TA = +70NC)
TQFN (derate 25.6mW/NC above +70NC)................. 2051mW
Operating Temperature Range ............................ 0NC to +70NC
Storage Temperature Range ........................... -55NC to +150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
TQFN
Junction-to-Ambient Thermal Resistance (BJA) .......... 39NCWJunction-to-Case Thermal Resistance (BJC) ................ 6NC/W
ABSOLUTE MAXIMUM RATINGS
Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to /thermal-tutorial.
Note 1: All I/O pins are clamped by internal diodes.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion 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.
PACKAGE THERMAL CHARACTERISTICS(Note 2)
ELECTRICAL CHARACTERISTICS
(VCC = +3.0V to +3.6V, CCL = 10nF coupling capacitor on each output, RL = 50I, TA = 0NC to +70NC, unless otherwise noted. Typical
values are at VCC = +3.3V, TA = +25NC.) (Note 3)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Operating Power-Supply RangeVCC3.03.6V
Operating Supply CurrentICC
PA = PB = VCC, D10.2 pattern, f = 3GHz,
active state70100PA = PB = GND, D10.2 pattern, f = 3GHz,
active state6085
Standby Supply CurrentISTBYEN = GND or CAD = VCC20500FA
Dynamic Power-Down CurrentIDYNPD1620mA
Differential Input ResistanceZRX-DIFF-(Note 4)85100115I
Differential Output ResistanceZTX-DIFF-(Note 4)85100115I
AC PERFORMANCE
Differential Input Return Loss
(Notes 4, 5)RLRX-DIFF
150MHz P f < 300MHz 18
300MHz P f < 600MHz14
600MHz P f < 1200MHz10
1.2GHz P f < 2.4GHz8
2.4GHz P f ≤ 3.0GHz3
MAX4951Cbps SATA Bidirectional Redriver with Input Equalization,
Preemphasis, and Advanced Power Management
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +3.0V to +3.6V, CCL = 10nF coupling capacitor on each output, RL = 50I, TA = 0NC to +70NC, unless otherwise noted. Typical
values are at VCC = +3.3V, TA = +25NC.) (Note 3)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Common-Mode Input Return
Loss (Notes 4, 5)RLRX-CM
150MHz P f < 300MHz5
300MHz P f < 600MHz5
600MHz P f < 1200MHz2
1.2GHz P f < 2.4GHz2
2.4GHz P f ≤ 3.0GHz2
Differential Output Return Loss
(Notes 4, 5)RLTX-DIFF
150MHz P f < 300MHz14
300MHz P f < 600MHz8
600MHz P f < 1200MHz6
1.2GHz P f < 2.4GHz6
2.4GHz P f ≤ 3.0GHz3
Common-Mode Output Return
Loss (Notes 4, 5)RLTX-CM
150MHz P f < 300MHz 8
300MHz P f < 600MHz5
600MHz P f < 1200MHz2
1.2GHz P f < 2.4GHz2
2.4GHz P f ≤ 3.0GHz1
Differential Input Signal RangeVRX-DIFF-
SATA 2i, SATA 3i, MODE = GND (Note 4)2401000mVP-PSATA 2i, SATA 3i, MODE = VCC (Note 6)2201000
Differential Output SwingVTX-DIFF-
f = 750MHz, f = 3.0GHz, PA = PB = GND
(Notes 4, 6)400700mVP-P
Output PreemphasisVTX-DIFF-
PP-PEf = 750MHz, PA = PB = VCC3dB
Input EqualizationVRX-DIFF-
PP-EQVRX-DFF-PP = 300mVP-P2.7dB
Preemphasis Time PeriodtPEf = 750MHz, PA = PB = VCC150ps
Propagation DelaytPD240ps
Output Rise/Fall TimetTX-RISE-
FALL
PA = PB = GND, CL = 0.5pF
(Notes 5, 7)40ps
Deterministic Jitter (Notes 5, 8)tTX-DJ-DDData rate = 3.0Gbps, PA = PB = GND17psP-PData rate = 6.0Gbps, PA = PB = GND20
Random Jitter tTX-RJ-DDPA = PB = GND (Notes 5, 8)1.5psRMS
OOB Detector ThresholdVOOB_THSATA OOB pattern, MODE = GND (Note 4)75200mVP-PSATA OOB pattern, MODE = VCC (Note 6)50150
OOB Output Enter/Exit TimetOOB(Note 9)35ns
OOB Differential Offset DeltaDVOOB-
DIFF(Note 10)-100+100mV
MAX4951Cbps SATA Bidirectional Redriver with Input Equalization,
Preemphasis, and Advanced Power Management
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +3.0V to +3.6V, CCL = 10nF coupling capacitor on each output, RL = 50I, TA = 0NC to +70NC, unless otherwise noted. Typical
values are at VCC = +3.3V, TA = +25NC.) (Note 3)
Note 3: All devices are 100% production tested at TA = +70NC. Specifications over the operating temperature range are guaran-
teed by design.
Note 4: This specification meets SATA version 3.0 (gold standard).
Note 5: Guaranteed by design.
Note 6: This specification meets SATA version 2.6 (gold standard).
Note 7: Rise and fall times are measured using 20% and 80% levels.
Note 8: DJ measured using K28.5 pattern; RJ measured using D10.2 pattern
Note 9: Total time for OOB detection circuit to enable/squelch the output.
Note 10: Difference between squelched and not squelched in the active mode.
Note 11: Difference between output common mode in the active and dynamic power-down state.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
OOB Common-Mode DeltaDVOOB-CM(Note 10)-50+50mV
OOB Output DisableVOOB-OUTVIN < VCCB (min), output voltage in squelch
(Note 5)30mVP-P
Dynamic Power-Down Exit TimetDPDSATA OOB pattern20ns
Output Common-Mode DeltaDVOUT-CM(Note 11)-25+25mV
LOGIC INPUT
Input Logic-HighVIHEN, CAD, PA, PB, MODE1.4V
Input Logic-LowVILEN, CAD, PA, PB, MODE0.6V
Input Logic HysteresisVHYSTEN, CAD, PA, PB, MODE0.1V
Input Pullup/Pulldown ResistanceRPU-PD370kI
ESD PROTECTION
All PinsHuman Body Model±8kV
MAX4951Cbps SATA Bidirectional Redriver with Input Equalization,
Preemphasis, and Advanced Power Management
Typical Operating Characteristics
(VCC = +3.3V, TA = +25°C, all eye diagrams measured using K28.5 pattern, unless otherwise noted.)
VRX-DFF-PP = 240mVP-P, PA = VCC,
DATA RATE = 6.0Gbps
-500mV
-400mV
-300mV
-100mV
-200mV
100mV
200mV
300mV
400mV
MAX4951C toc09500mV
VRX-DFF-PP = 240mVP-P, PA = VCC,
DATA RATE = 3.0Gbps
-500mV
-400mV
-300mV
-100mV
-200mV
100mV
200mV
300mV
400mV
MAX4951C toc08500mV
VRX-DFF-PP = 240mVP-P, PA = VCC,
DATA RATE = 1.5Gbps
-500mV
-400mV
-300mV
-100mV
-200mV
100mV
200mV
300mV
400mV
MAX4951C toc07500mV
VRX-DFF-PP = 1000mVP-P, PA = GND,
DATA RATE = 6.0Gbps
100ps50ps-100ps-50ps0s
-300mV
-200mV
-100mV
100mV
200mV
300mV
150ps150ps
MAX4951C toc06
VRX-DFF-PP = 1000mVP-P, PA = GND,
DATA RATE = 3.0Gbps
200ps100ps-200ps-100ps0s
-300mV
-200mV
-100mV
100mV
200mV
300mV
-300ps300ps
MAX4951C toc05
VRX-DFF-PP = 1000mVP-P, PA = GND,
DATA RATE = 1.5Gbps
400ps200ps-400ps-200ps0s
-300mV
-200mV
-100mV
100mV
200mV
300mV
-600ps600ps
MAX4951C toc04
VRX-DFF-PP = 240mVP-P, PA = GND,
DATA RATE = 6.0Gbps
100ps50ps-100ps-50ps0s
-300mV
-200mV
-100mV
100mV
200mV
300mV
-150ps150ps
MAX4951C toc03
VRX-DFF-PP = 240mVP-P, PA = GND,
DATA RATE = 3.0Gbps
200ps100ps-200ps-100ps0s
-300mV
-200mV
-100mV
100mV
200mV
300mV
-300ps300ps
MAX4951C toc02
VRX-DFF-PP = 240mVP-P, PA = GND,
DATA RATE = 1.5Gbps
400ps200ps-400ps-200ps0s
-300mV
-200mV
-100mV
100mV
200mV
300mV
-600ps600ps
MAX4951C toc01
MAX4951Cbps SATA Bidirectional Redriver with Input Equalization,
Preemphasis, and Advanced Power Management
Typical Operating Characteristics (continued)
(VCC = +3.3V, TA = +25°C, all eye diagrams measured using K28.5 pattern, unless otherwise noted.)
DIFFERENTIAL OUTPUT
RETURN LOSS vs. FREQUENCY
MAX4951C toc14
FREQUENCY (GHz)
DIFFERENTIAL RETURN LOSS (dB)
MASK
MEASURED
DIFFERENTIAL INPUT
RETURN LOSS vs. FREQUENCY
MAX4951C toc13
FREQUENCY (GHz)
DIFFERENTIAL RETURN LOSS (dB)
MASK
MEASURED
VRX-DFF-PP = 1000mVP-P, PA = VCC,
DATA RATE = 6.0Gbps
-500mV
-400mV
-300mV
-100mV
-200mV
100mV
200mV
300mV
400mV
MAX4951C toc12
100ps50ps-100ps-50ps0s-150ps150ps
VRX-DFF-PP = 1000mVP-P, PA = VCC,
DATA RATE = 3.0Gbps
-500mV
-400mV
-300mV
-100mV
-200mV
100mV
200mV
300mV
400mV
MAX4951C toc11500mV
200ps100ps-200ps-100ps0s-300ps300ps
VRX-DFF-PP = 1000mVP-P, PA = VCC,
DATA RATE = 1.5Gbps
400ps200ps-400ps-200ps0s
-500mV
-400mV
-300mV
-100mV
-200mV
100mV
200mV
300mV
400mV
-600ps600ps
MAX4951C toc10500mV
