ADSP-BF504 datasheet(54/80 Pages) AD

54 / 80 page

Rev. PrC

Page 54 of 80

January 2010

ADSP-BF504/F,ADSP-BF506F

Preliminary Technical Data

ADC — SPECIFICATIONS

ADC — OPERATING CONDITIONS

Parameter

Conditions

Min

Nominal

Max

Unit

VDD

1 (AV

DD, DVDD, VDRIVE)

1 Throughout this datasheet, VDD refers to both AVDD and DVDD.

fADSCLK = 24 MHz, fS up to 1.5 MSPS, internal or

external reference = 2.5 V ± 1% unless

otherwise noted

2.7

3.6

VDD (AVDD, DVDD, VDRIVE)fADSCLK = 32 MHz, fS up to 2.0 MSPS, internal or

external reference = 2.5 V ± 1% unless

otherwise noted

4.75 (AVDD, DVDD)

2.7 (VDRIVE)

5.25 (AVDD, DVDD)

5.25 (VDRIVE)

TJ Junction Temperature 120-Lead LQFP @ TAMBIENT = –40°C to +85°C

–40

+105

°C

Table 45. Operating Conditions (Analog, Voltage Reference, and Logic I/O)

Parameter

Specification

Unit

Test Conditions/Comments

ANALOG INPUT1

Single-Ended Input Range

0 V to VREF

RANGE= low

0 V to 2 × VREF

VRANGE = high

Pseudo Differential Input Range: VIN+ – VIN–

0 to VREF

RANGE = low

2 × VREF

VRANGE = high

Fully Differential Input Range: VIN+ and VIN–

VCM ± VREF/2

VCM = common-mode voltage

3 = V

REF/2, RANGE = low

VCM ± VREF

VVCM = VREF, RANGE = high

DC Leakage Current

±1

μA max

VA1 to VA6, VB1 to VB6

Input Capacitance4

pF typ

When in track

pF typ

When in hold

INTERNAL VOLTAGE REFERENCE (OUTPUT)5

Reference Output Voltage

2.5 ± 0.2%

@ 25°C, AVDD = 2.7 V to 5.25 V

Long-Term Stability

150

ppm typ

For 1000 hours

Output Voltage Hysteresis6

ppm typ

DCAPA, DCAPB Output Impedance

Ω typ

Reference Temperature Coefficient

ppm/°C max 10ppm/°C typ

VREF Noise

μV rms typ

EXTERNAL VOLTAGE REFERENCE (INPUT)5

Reference Input Voltage Range7

0.1/AVDD

V min/V max See ADC — Typical Performance Characteristics

DC Leakage Current7

±2

μA max

External reference applied to Pin DCAPA/Pin DCAPB

Input Capacitance

pF typ

DIGITAL LOGIC INPUTS

Input High Voltage, VINH

2.8

V min

Input Low Voltage, VINL

0.4

V max

Input Current, IIN

±15

nA typ

VIN = 0 V or VDRIVE

Input Capacitance, CIN

pF typ

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