DSP56166ROM datasheet(16/63 Pages) MOTOROLA

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PRELIMINARY - 6/15/93

MOTOROLA

DSP56166 Technical Data Sheet

Analog I/O Characteristics

(VddA = 5.0 Vdc +/- 10%, TJ = -40 to +125

°C).

The Analog I/O characteristics of this device are shown below.

a. Min. value reached for a codec clock of 3MHz, typ. for 2MHz and max. for 100KHz

b. 0dBm0 corresponds to 3.14dB below the input saturation level

c. AC coupling is necessary in single-ended mode when the load resistor is not tied to Vref

±10%

Characteristic

Min

Typ

Max

Unit

Input Impedance on Mic & Auxa

1400

Ω

Input Capacitance on Mic and Aux

—

Peak Input Voltage on the Mic/Aux Input for Full

Scale Linearity (0.14dBm0b): - 6dB- MGS1-0=00

0dB- MGS1-0=01

6dB- MGS1-0=10

17dB- MGS1-0=11

—

1.414

0.707

354

100

mVp

Internal Input GainVariation;

G=-6dB, 0dB,6dB or 17dB

(

±0.83dB variation due to 10% variation on Vdd):

G-0.83

G+0.83

Vref Output Voltage

1.8

2.2

Vref Output Current

—

±1mA

DC offset between Spkout1 and Spkout2

—

100

Allowable Differential Load Capacitance on

Spkout1/2(with 1k

Ω in series)

—

Allowable Single-ended Load Capacitance on

Spkout1/2(with 0.5k

Ω in series)

—

100

Maximum Single-ended Signal Output Level

—

Maximum Differential Signal Output Level

—

Single-ended Load Resistance

500

—

Ω

Differential Load Resistance

—

Ω

R bias

—

10d

—k

Ω

Internal Output Volume Control Variation

VC=-20,-15,-10,-5,0,6,12,18,24,30,35 dB

(

±0.83dB variation due to 10% variation on Vdd)

VC-0.83

VC+0.83

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