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DS3911
Temperature-Controlled, Nonvolatile, I²C Quad DAC
Low-Cost Solution for Providing Bias and Modulation Control for Multichannel Laser Diode Drivers
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Status
Active: In Production.
Description
The DS3911 is a quad, 10-bit delta-sigma output, nonvolatile (NV) controller that features an on-chip temperature sensor and associated analog-to-digital converter (ADC). The integrated temperature sensor indexes the up to 2°C resolution NV lookup tables (LUTs), encompassing a -40°C to +100°C temperature range. The LUT directly drives the delta-sigma digital-to-analog converter (DAC) outputs. This flexible LUT-based architecture allows the device to provide a temperature-compensated DAC output with arbitrary slope. Programming is accomplished by an I²C-compatible interface that operates at speeds of up to 400kHz.
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Data Sheet
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Key Features
- Four 10-Bit Delta-Sigma Outputs
- On-Chip Temperature Sensor and ADC
- Four Temperature-Indexed LUTs, Up to 2°C Resolution
- I²C-Compatible Serial Interface
- Address Pins Allow Up to Four DS3911s to Share the Same I²C Bus
- 2.8V to 5.5V Digital Supply
- -40°C to +100°C Operating Temperature Range
- 3mm x 5mm, 14-Pin TDFN Package
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Applications/Uses
- Active Optical Cables
- Instrumentation and Industrial Controls
- Linear and Nonlinear Compensation
- Optical Transceivers
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Key Specifications:
| Precision DACs (4-12 Bits) |
| Part Number |
Power-On Reset State |
Resolution
(bits) |
Channels |
Output Type |
Reference |
INL
(±LSB) |
Interface |
Supply Range
(V) |
Supply Range
(V) |
Oper. Temp.
(°C) |
Budgetary Price |
| max |
min |
max |
See Notes |
| DS3911 |
User-Defined NV |
10 |
4 |
Voltage- Buffered |
Ext. |
12 |
Serial - I2C |
2.8 |
5.5 |
-40 to +100 |
$0.75 @1k |
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See All Precision DACs (4-12 Bits) (268)
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Pricing 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.
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| Fiber Monitoring and Control |
| Part Number |
Resolution
(bits) |
DACs/ Resistors |
FS Out
(kΩ) |
Steps |
Temp. Sensor |
Memory |
VSUPPLY
(V) |
Control Interface |
Budgetary Price |
| See Notes |
| DS3911 |
13 |
4 DACs |
None |
None |
Internal |
EEPROM |
2.7 to 5.5 |
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$0.75 @1k |
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See All Fiber Monitoring and Control (20)
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Pricing 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.
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Diagram
Typical Operating Circuit
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Information Index
Document Ref.: 19-5933
Rev 0;
2011-06-28
This page last modified: 2011-06-28
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