AMC6821 Datasheet, PDF (1/47 Pages) Burr-Brown (TI) – Analog Monitor and Control Circuit

BurrĆBrown Products
from Texas Instruments
AMC6821
AMC6821
AMC6821
SBAS386A – MAY 2006 – REVISED MAY 2006
Analog Monitor and Control Circuit
FEATURES
• Remote Temperature Sensor:
±1°C Accuracy, 0.125°C Resolution
• Local Temperature Sensor:
±2°C Accuracy, 0.125°C Resolution
• PWM Controller
• Frequency: 10Hz to 40kHz
Duty Cycle: 0% to 100%, 8 Bits
• Automatic Fan Speed Control Loops
• SMBus Interface
• Power: 3V to 5.5V
• Packages (Green): SSOP-16 (4mm × 5mm)
and QFN-16 (4mm × 4mm)
V_DD
GND
APPLICATIONS
• Notebook PCs
• Network Servers
• Desktop PCs
• Telecommunications Equipment
• PC-Based Equipment
• DLP™ and LCD Projectors
A0 A1
THERM
AMC6821
OVR
Remote
Sensing
Transistor _IN+
IN-
mP
THERM
Control
Temperature Threshold
Registers
Limit
Comparator
Local/Remote
Temperature Registers
ADC
On-Chip Diode
Temperature Sensor
Ref
Current Source
(I₁; I₀)
SMBus/I²C
Interface
Chip Registers
Control Logic
SCLK
SDA
FAN-FAULT
SMBALERT
TACH Data
+V
Signal Conditioning
Fan Speed Counter
TACH
PWM ^{PWM Output}
+5V
Control
Automatic Fan Speed
Controller
PWM-MODE
US patents pending.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
DLP is a trademark of Texas Instruments.
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All other trademarks are the property of their respective owners.
PRODUCT PREVIEW information concerns products in the
formative or design phase of development. Characteristic data and
other specifications are design goals. Texas Instruments reserves
the right to change or discontinue these products without notice.
Copyright © 2006, Texas Instruments Incorporated