Datasheet > ILA4661

ILA4661

更新时间： 2022-01-14 00:05:03

品牌	Logo	应用领域
INTEGRAL		延迟线
页数	文件大小	规格书
2页	109K
描述
BASEBAND DELAY LINE

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ILA4661 数据手册

ILA4661

BASEBAND DELAY LINE

GENERAL DESCRIPTION

The ILA4661 is an integrated baseband delay line circuit with one line delay. It is

suitable for decoders with colour-difference signal outputs ± (R-Y) and ± (B-Y).

Device is functionally identical to the TDA4661 Philips.

FEATURES

• Two comb filters, using the switched-capacitor technique, for one line delay time (64

µS)

• 3 MHz internal clock signal derived from a 6 MHz CCO, line-locked by the sandcastle

pulse (64 µS line)

• Comb filtering functions for NTSC colour-difference signals to suppress cross-colour

• Clamping of AC-coupled input signals ± (R-Y) and ± (B-Y)

QUICK REFERENCE DATA

Parameter

Symbol

Type U_VCC=5.0 V

Min.

Type

Max

6.0

1.0

1.7

3.3

Analogy supply current, mA

Digital supply current, mA

Ip1

Ip2

U₁₄,₁₆

U₁₁,₁₂

Input fixing voltage (on pins 14 and 16), V

Output voltage (on pins 11 and 12), V

Output signal (peak-to peak value)

± (R-Y) on pin 11

1.3

2.5

U₀₁₁

U₀₁₂

1.05

1.33

± (B-Y) on pin 12

Ratio of output amplitudes at equal input signals

(U₁₄=U₁₆=1.33V), dB

U₁₁/U₁₂

U_n/U_n+1

-0.4

-0.1

0.4

0.1

Ratio of output signals on pins 11 and 12 for

adjacent time samples at constant input signals

(U₁₄=U₁₆=1.33V), dB

Gain for PAL and NTSC

Gain for SECAM

5.3

-0.6

6.3

0.4

(ratio U_O/U_I), dB

t_d

t_dn

63.94

64.06

Delay of delayed signals, µS

Delay of non-delayed signals, nS

Transient time of delayed signal on pins 11

respectively 12, nS

t_tr

350

Transient time of non-delayed signal on pins 11

respectively 12, nS

t_trn

S/N(w)

320

1.2

Noise voltage (RMS value; pins 11 and 12), mV

Weighted signal-to-noise ratio, dB

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