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參數(shù)資料

型號：	TEA5712T
廠商：	NXP SEMICONDUCTORS
元件分類：	接收器
英文描述：	AM/FM stereo DTS radio circuit
中文描述：	AM/FM, AUDIO SINGLE CHIP RECEIVER, PDSO32
封裝：	PLASTIC, SO-32
文件頁數(shù)：	6/28頁
文件大小：	400K
代理商：	TEA5712T

September 1994

Philips Semiconductors

Product specification

AM/FM stereo DTS radio circuit

TEA5712; TEA5712T

FUNCTIONAL DESCRIPTION

The AM circuit incorporates a double balanced mixer, a

one pin low-voltage oscillator (up to 30 MHz) a

field-strength indicator output and is designed for

distributed selectivity.

The AM input is designed to be connected to the top of a

tuned circuit. AGC controls the IF amplification and for

large signals it lowers the input impedance.

The first AM selectivity can be an IFT as well as an IFT

combined with a ceramic filter; the second one is an IFT.

The FM circuit incorporates a tuned RF stage, a double

balanced mixer, a one-pin oscillator, a field-strength

indicator output and is designed for distributed IF ceramic

filters. The FM quadrature detector uses a ceramic

resonator.

The PLL stereo decoder incorporates a signal dependent

stereo circuit, a soft-mute circuit and a stereo indicator

LED driver.

Supply voltage behaviour

The TEA5712 incorporates internal stabilized power

supplies. The maximum supply voltage is 12 V, the

minimum voltage can go down temporarily to 1.8 V without

any loss in performance.

Due to the capacitor at pin 19 (RIPPLE) the IC gives

excellent performance, even when the actual supply

voltage at pin 25 (V

) drops below the voltage at pin 19

(RIPPLE).

Figures 4, 5 and 6 show that V

stab

, which is dominant for

the overall IC performance, remains unaffected, even if V

drops down to 1.8 V or less. In this typical example the

static or average V

is equal to 2.5 V. Dips in V

stab

appear

only when the peak-to-peak value of the AC-component of

2 V, i.e. when the dynamic value of V

drops down to

1.5 V for a short moment.

Fig.4

Supply voltage behaviour; V

as a

function of time.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

ripple

function of time.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

Fig.6

Supply voltage behaviour; V

stab

as a

function of time.

相關(guān)PDF資料	PDF描述
TEA5757	Self Tuned Radio STR
TEA5757H	Self Tuned Radio STR
TEA5762	Self Tuned Radio STR
TEA5762H	Self Tuned Radio STR
TEA5767	single-chip FM stereo radio

相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
TEA5712TD	制造商:未知廠家制造商全稱:未知廠家功能描述:AM/FM Receiver Circuit
TEA5712TD-T	制造商:未知廠家制造商全稱:未知廠家功能描述:AM/FM Receiver Circuit
TEA5757	制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Self Tuned Radio STR
TEA5757H	制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Self Tuned Radio STR
TEA5757H/V1,518	功能描述:射頻無線雜項 SELF TUNED RADIO RoHS:否制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel

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