DS3102 Stratum 2/3E/3 Timing Card IC with Synchronous Ethernet Support

Description

The DS3102 is a low-cost, feature-rich timing IC for telecom timing cards. With 8 input clocks, the device directly accepts both line timing from a large number of line cards and external timing from external DS1/E1 BITS transceivers. The DS3102 continually monitors all input clocks and performs automatic hitless reference switching if the primary reference fails. The T0 DPLL complies with the Stratum 2, 3E, 3, 4E and 4 requirements of GR-1244, GR-253, G.812 Types I–IV, G.813 and G.8262. The highly programmable DS3102 support numerous input and output frequencies including rates required for SONET/SDH, Synchronous Ethernet (1G, 10G, and 100Mbps), wireless base stations, and CMTS systems. PLL bandwidths from 0.5mHz to 400Hz are supported, and a wide variety of PLL characteristics and device features can be configured to meet the needs of many different applications. Two DS3102 devices can be configured in a master/slave arrangement for timing card equipment protection.

The DS3102 register set is backward compatible with Semtech's ACS8522 timing card IC. The DS3102 has a different package and pin arrangement than the ACS8522.

Key Features

Applications/Uses

Synchronization for Stratum 2, 3E, 3, 4E and 4 plus SMC, SEC and EEC
- Meets Requirements of GR-1244 Stratum 2–4, GR-253, G.812 Types I–IV, G.813, and G.8262
- Stratum 2, 3E or 3 Holdover Accuracy with Suitable External Oscillator
- Programmable Bandwidth: 0.5mHz to 400Hz
- Hitless Reference Switching on Loss of Input
- Automatic or Manual Phase Build-Out
- Frequency Conversion Among SONET/SDH, PDH, Ethernet, Wireless, and CMTS Rates
8 Input Clocks
- Four CMOS/TTL Inputs (≤ 125MHz)
- Four LVDS/LVPECL/CMOS/TTL Inputs (≤ 156.25MHz)
- Three Optional Frame-Sync Inputs (CMOS/TTL)
- Continuous Input Clock Quality Monitoring
- Numerous Input Clock Frequencies Supported:
  - SONET/SDH: 6.48, N x 19.44, N x 51.84MHz
  - Ethernet xMII: 2.5, 25, 125, 156.25MHz
  - PDH: N x DS1, N x E1, N x DS2, DS3, E3
  - Frame Sync: 2kHz, 4kHz, 8kHz
  - Custom: Any Multiple of 2kHz Up to 131.072MHz, Any Multiple of 8kHz Up to 155.52MHz
7 Output Clocks
- Three CMOS/TTL Outputs (≤ 125MHz)
- Two LVDS/LVPECL Outputs (≤ 312.50MHz)
- Two Dual CMOS/TTL and LVDS/LVPECL Outputs
- Five CMOS Outputs Have Additional Output Pins That Can Be Powered at 2.5V or 3.3V
- Numerous Output Clock Frequencies Supported:
  - SONET/SDH: 6.48, N x 19.44, N x 51.84MHz
  - Ethernet xMII: 2.5, 25, 125, 156.25, 312.5MHz
  - PDH: N x DS1, N x E1, N x DS2, DS3, E3
  - Other: 10, 10.24, 13, 30.72MHz
  - Frame Sync: 2kHz, 8kHz
  - Custom Clock Rates: Any Multiple of 2kHz Up to 77.76MHz, Any Multiple of 8kHz Up to 311.04MHz, Any Multiple of 10kHz Up to 388.79MHz
General
- Internal Compensation for Master Clock Oscillator
- SPI™ Processor Interface
- 1.8V Operation with 3.3V I/O (5V Tolerant)
- Industrial Temperature Range

	SONET/SDH Equipment Clocks (SECs)
	Synchronous Ethernet Equipment Clocks (EECs)
	Timing Card IC in WAN Equipment Including MSPPs, Ethernet Switches, Routers, DSLAMs, and Wireless Base Stations

Key Specifications: Timing Card and Line Card ICs

Part Number

Number of Independent DPLLs

Number of Input Clocks

Number of Differential Input Clocks

Number of Output Clocks

Number of Differential Output Clocks

Input Clock Frequencies

Output Clock Frequencies

Number of DS1/E1/J1 Receivers

Number of DS1/E1/J1 Transmitters

Minimum DPLL Bandwidth (Hz)

Maximum DPLL Bandwidth (Hz)

Smallest Available Package (max w/pins) (mm²)

Price^**

DS3102

2kHz and 4kHz
25.00MHz
125.00MHz
156.25MHz
312.5MHz
N x 19.44MHz
N x 2kHz up to 131.072MHz
N x 8kHz up to 155.52MHz
N x DS1
N x E1

2kHz
6.48MHz
8kHz
25.00MHz
51.84MHz
62.5MHz
125.00MHz
155.52MHz
156.25MHz
311.04MHz
312.5MHz
DS3
E3
N x 10kHz up to 388.79MHz
N x 19.44MHz
N x 2kHz up to 77.76MHz
N x 8kHz up to 311.04MHz
N x DS1
N x DS2
N x E1

0.0005

400

100

$35.20 @ 1k

See All Timing Card and Line Card ICs (6)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
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Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-2 of 2

DS3102

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Sample

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Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

DS3102GN+

CSBGA;81 pin;100 mm²
Outline Drawing: 21-0360 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: X81+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

DS3102GN

CSBGA;81 pin;100 mm²
Outline Drawing: 21-0360 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: X81-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

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