ST70136G 데이터 시트보기 (PDF) - STMicroelectronics

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ST70136G

CPE ADSL ANALOG FRONT END

STMicroelectronics 

ST70136

TA = 0 to 70°C unless otherwise specified.

Table 12 : DAC 8B Specifications

Typical specifications apply for VCC = 5.0V, temperature = 27°C, nominal process and bias current. Maximum and

minimum performance is with VCC ±5%, 0°C < Tambient < 70°C, and worst case process and bias current.

Description

Minimum Typical Maximum Unit

Comments

Number of bit

8

Sampling rate

1

KHz

DNL

a

-0.5

0.5

LSB

INL

a

-2

2

LSB

max code (FFh)

a

2.42

2.52

2.62

V

mid code (80h)

a

3.57

3.63

3.69

V

min code (00h)

a

4.74

4.77

4.80

V

Offset IVCO vs VCOCAP b

-10

10

mV

Offset variation with current

-20

20

mV Iout variation from 10µA to 400µA,

@ code max, VCXOUT = 2.4V

VCOCAP Zout

c

320

500

680

kΩ

VCOCAP Zout

d

350

500

650

Ω

VCOCAP load

10

µF

Notes: a. Measured at VCOCAP output, filter disabled.

b. Filter disabled, current through IVCO = 10µA, VCXOUT = 2V.

c. Filter enabled.

d. Filter disabled.

5.6 - Crystal

Table 13 : Crystal Parameters

Parameter

Symbol

Minimum

Typical

Start up time

Clock Frequency

Frequency adjustment range

TSU

CLKM

XADJ

-100

35.328

Note: Recommended Crystal: MELCOM 35.328MHz / UM1/ 30 / 30 / 0+70 / 15pF / FUND.

Maximum

7

100

Unit

ms

MHz

ppm

18/24

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