CSP1027 datasheet(47/64 Pages) AGERE

47 / 64 page

Lucent Technologies Inc.

Data Sheet

CSP1027 Voice Band Codec for

December 1999

Cellular Handset and Modem Applications

8 Device Characteristics

8.1 Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-

lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess

of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended

periods can adversely affect device reliability.

External leads can be bonded and soldered safely at temperatures of up to 300 °C.

Voltage Range on any Pin with Respect to Ground................................................................. –0.5 V to +6 V

Power Dissipation ................................................................................................................................. 0.3 W

Ambient Temperature Range...............................................................................................–40 °C to +85 °C

Storage Temperature Range ....................................................................................................... –65 °C to +150 °C

8.2 Handling Precautions

All MOS devices must be handled with certain precautions to avoid damage due to the accumulation of static

charge. Although input protection circuitry has been incorporated into the devices to minimize the effect of this

static buildup, proper precautions should be taken to avoid exposure to electrostatic discharge during handling and

mounting. Lucent Technologies employs a human-body model for ESD-susceptibility testing. Since the failure volt-

age of electronic devices is dependent on the current, voltage, and, hence, the resistance and capacitance, it is

important that standard values be employed to establish a reference by which to compare test data. Values of

100 pF and 1500

Ω are the most common and are the values used in the Lucent human-body model test circuit.

The breakdown voltage for the CSP1027 is greater than 1000 V.

8.3 Recommended Operating Conditions

8.3.1 Package Thermal Considerations

The recommended operating temperature specified above is based on the maximum power, package type, and

maximum junction temperature. The following equation describes the relationship between these parameters. Cer-

tain applications' maximum power may be less than the worst-case value and can use this relationship to determine

the maximum ambient temperature allowed.

TA = TJ – P x

ΘJA

Maximum Junction Temperature (TJ) in 44-Pin QFP ...........................................................................125 °C

44-pin QFP Maximum Thermal Resistance in Still-Air-Ambient (

ΘJA).............................................. 39 °C/W

Maximum Junction Temperature (TJ) in 48-Pin TQFP......................................................................... 125 °C

48-pin TQFP Maximum Thermal Resistance in Still-Air-Ambient (

ΘJA) ........................................... 90 °C/W

Table 11. Recommended Operating Conditions

Parameter

Symbol

Min

Max

Unit

Analog Supply Voltage

VDDA

4.5

5.5

Digital Supply Voltage

VDD

2.7

5.5

Ambient Temperature

–40

°C

CSP1027 Datasheet(PDF) 47 Page - Agere Systems

CSP1027 Datasheet(HTML) 47 Page - Agere Systems

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

Datasheet Download

Link URL