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MAXIM New Products - MAX14980 & MAX16930, MAX16931
2013-05-06
MAX14980
Ruggedized Quad SAS/SATA Redriver/Equalizer with Extended Operating Temperature
Over 2x Jitter Performance Improvement in a Robust Design
Description
The MAX14980 quad-channel redriver is designed to redrive two full lanes of SAS or SATA signals up to 6.0GT/s (gigatransfers per second) and operates from a single +3.3V supply.
The MAX14980 features independent input equalization and output preemphasis. It enhances signal integrity at the receiver by equalizing the signal at the input and establishing preemphasis at the output of the device. SAS and SATA OOB (out-of-band) signaling is supported using high-speed amplitude detection on the inputs and squelch on the corresponding outputs. Inputs and outputs are all internally 50Ω terminated and must be AC-coupled to the SAS/SATA controller IC and SAS/SATA device.
The MAX14980 is available in a small 42-pin, 3.5mm x 9mm, TQFN package with flow-through traces for ease of layout. This device is specified over the -40°C to +85°C extended operating temperature range.
The MAX14980 features independent input equalization and output preemphasis. It enhances signal integrity at the receiver by equalizing the signal at the input and establishing preemphasis at the output of the device. SAS and SATA OOB (out-of-band) signaling is supported using high-speed amplitude detection on the inputs and squelch on the corresponding outputs. Inputs and outputs are all internally 50Ω terminated and must be AC-coupled to the SAS/SATA controller IC and SAS/SATA device.
The MAX14980 is available in a small 42-pin, 3.5mm x 9mm, TQFN package with flow-through traces for ease of layout. This device is specified over the -40°C to +85°C extended operating temperature range.
Key Features
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High Performance Solution Designed to Overcome Lossy Channels
- 3dB of Independent (per Channel) Selectable Input EQ and Output Preemphasis
- Compensates up to 30in of Channel Losses with Deterministic Jitter: 23psP-P (max); Random Jitter: 1.8psRMS (max)
- 8dB (typ) of Return Loss Up to 3.0GHz
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Designed to Reliably Operate in Harsh Environments
- Industrial Temperature Rated: -40°C to +85°C
- ±2.5kV Human Body Model (HBM) ESD Protection on All Pins
- Housed in a Flow-Through (42-Pin, 3.5mm x 9.0mm) TQFN Package or Resistance to Vibration/Shocks
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Ease of Design and Layout
- Single 3.3V Operation
- Internal Input/Output 50Ω Termination Resistors
MAX16930, MAX16931
2MHz, 36V, Dual Buck with Preboost and 20µA Quiescent Current
Industry's Highest Performance Automotive Dual Buck Controller with Preboost Enables a Space-Efficient, Crank-Ready Design
Description
The MAX16930/MAX16931 offer two high-voltage, synchronous step-down controllers and a step-up preboost controller. They operate with an input voltage supply from 2V to 42V with preboost active and can operate in drop-out condition by running at 95% duty cycle. The devices are intended for applications with mid- to high-power requirements that operate at a wide input voltage range such as during automotive cold-crank or engine stop-start conditions.
The MAX16930/MAX16931 step-down controllers operate 180° out-of-phase at frequencies up to 2.2MHz to allow small external components, reduced output ripple, and to guarantee no AM band interference. The switching frequency is resistor adjustable. The FSYNC input programmability enables three frequency modes for optimized performance: forced fixed-frequency operation, skip mode with ultra-low quiescent current (20µA), and synchronization to an external clock. The devices also provide a spread-spectrum option to minimize EMI interference.
The MAX16930/MAX16931 are offered with an asynchronous step-up controller. This preboost circuitry turns on during low input voltage conditions. It is designed to provide power to step-down controller channels with input voltages as low as 2V.
The devices also feature a power-OK monitor and overvoltage and undervoltage lockout. Protection features include cycle-by-cycle current limit and thermal shutdown.
The devices are available in a 40-pin TQFN-EP package and are specified for operation over the -40°C to +125°C automotive temperature range.
The MAX16930/MAX16931 step-down controllers operate 180° out-of-phase at frequencies up to 2.2MHz to allow small external components, reduced output ripple, and to guarantee no AM band interference. The switching frequency is resistor adjustable. The FSYNC input programmability enables three frequency modes for optimized performance: forced fixed-frequency operation, skip mode with ultra-low quiescent current (20µA), and synchronization to an external clock. The devices also provide a spread-spectrum option to minimize EMI interference.
The MAX16930/MAX16931 are offered with an asynchronous step-up controller. This preboost circuitry turns on during low input voltage conditions. It is designed to provide power to step-down controller channels with input voltages as low as 2V.
The devices also feature a power-OK monitor and overvoltage and undervoltage lockout. Protection features include cycle-by-cycle current limit and thermal shutdown.
The devices are available in a 40-pin TQFN-EP package and are specified for operation over the -40°C to +125°C automotive temperature range.
Key Features
- Dual, 2MHz Step-Down Controllers
- 50ns Minimum On-Time Allows 3.3V Output from Car Battery at 2.2MHz
- 180° Out-of-Phase Operation
- Preboost for Operation to 2V
- 20µA Operating Current
- Wide Input Supply Range from 3.5V to 36V (without Preboost)
- Resistor Programmable Frequency Between 200kHz and 2.2MHz
- ±1% Output-Voltage Accuracy: 5.0V/3.3V Fixed or Adjustable Between 1V and 10V
- Current-Mode Controllers with Forced Continuous and Skip Modes
- Frequency Synchronization Input
- Supply Overvoltage and Undervoltage Lockout
- Overtemperature and Short-Circuit Protection
- Thermally Enhanced 40-Pin TQFN-EP Package
- -40°C to +125°C Operating Temperature
