TSH345(2007) Ver la hoja de datos (PDF) - STMicroelectronics

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TSH345
(Rev.:2007)

Triple video buffer with selectable filter for HD and SD video applications

STMicroelectronics 

TSH345

Electrical characteristics

Table 3.

Symbol

Electrical characteristics at VCC = +5 V single supply, Tamb = 25°C

(unless otherwise specified) (continued)

Test conditions

Min. Typ. Max. Unit

Noise and distortion

eN

HD2

HD3

Total input voltage noise in Standard Definition

F = 100 kHz, RIN = 50 Ω

Total input voltage noise in High Definition

F = 100 kHz, RIN = 50 Ω

2nd harmonic distortion

F1 selected/F=1 MHz, Vout = 2 Vp-p, RL = 150 Ω

3rd harmonic distortion

F1 selected/F=1 MHz, Vout = 2 Vp-p, RL = 150 Ω

Standby mode

ISTBY

Total current consumption in standby mode

Fs1=1, Fs0=1

Ton

Time from standby to active mode

Toff

Time from active to standby mode

Fs1, Fs0 and Mux features

Vhigh High level

Vlow

Low level

1. Simulated data.

70

nV/√Hz

93

-44

dBc

-63

dBc

TBD 570

µA

5

µs

5

µs

0.9

V

0.3

V

Table 4.

Fs1

Filter and standby settings, VCC = +5 V single supply, Tamb = 25°C

Fs0

Settings

0

0

F3

Filtering for high definition (HD), 36 MHz

0

1

F2

Filtering for progressive video (PV), 18 MHz

1

0

F1

Filtering for standard definition (SD), 9 MHz

1

1

Standby

TSH345 in standby mode

Fs1 and Fs0 floating: forbidden

(for proper behavior of the TSH345, the Fs1 and Fs0 pins must never be left floating)

Table 5. Mux settings, VCC = +5 V single supply, Tamb = 25°C

Mux

Settings

0

R1 G1 B1

Video1 selected

1

R2 G2 B2

Video2 selected

Floating

R1 G1 B1

Video1 selected

MUX floating: forbidden

(for proper behavior of the TSH345, the MUX pin must never be left floating)

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