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TDA9851T/V1

I2C-bus controlled economic BTSC stereo decoder

Philips Electronics 

Philips Semiconductors

I2C-bus controlled economic BTSC stereo

decoder

Product specification

TDA9851

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX. UNIT

Power-on reset; note 6

VPOR(start) start of reset voltage

increasing supply voltage

−

−

decreasing supply voltage

4.2

5

2.5

V

5.8

V

VPOR(end) end of reset voltage

increasing supply voltage

5.2

6

6.8

V

Digital part (I2C-bus pins); note 7

VIH

HIGH-level input voltage

VIL

LOW-level input voltage

IIH

HIGH-level input current

IIL

LOW-level input current

VOL

LOW-level output voltage

IIL = 3 mA

3

−

−0.3

−

−10

−

−10

−

−

−

VCC ≤ 9 V

+1.5 V

+10

µA

+10

µA

0.4

V

Notes to the characteristics

1. The oscillator is designed to operate together with Murata resonator CSB503F58 or CSB503JF958 as SMD. Change

of the resonator supplier is possible, but the resonator specification must be close to the specified ones.

2. The AVL input voltage is internal. It corresponds to the output voltage OUTL and OUTR at AVL off.

3. The listed pin voltage corresponds with typical gain steps of +6 dB, +3 dB, 0 dB, −6 dB and −15 dB.

4. Attack time constant = CCAV × Ratt.

CCAV

×

0.76

V







10–--2--G--0---1-

–

10

–--2--G--0---2-











5. Decay time = -------------------------------------I--d---e--c--------------------------------------

Example: CCAV = 4.7 µF; Idec = 2 µA; G1 = −9 dB; G2 = +6 dB → decay time results in 4.14 s.

6. When reset is active the GMU bit (mute) is set and the I2C-bus receiver is in the reset position.

7. The AC characteristics are in accordance with the I2C-bus specification for standard mode (clock frequency

maximum 100 kHz). A higher frequency, up to 280 kHz, can be used if all clock and data times are interpolated

between standard mode (100 kHz) and fast mode (400 kHz) in accordance with the I2C-bus specification.

Information about the I2C-bus can be found in brochure “I2C-bus and how to use it” (order number 9398 393 40011).

1997 Nov 12

9

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