PDF TDA8705AT Data sheet ( Hoja de datos )

Número de pieza	TDA8705AT
Descripción	6-bit high-speed dual Analog-to-Digital Converter ADC
Fabricantes	NXP Semiconductors
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No Preview Available ! INTEGRATED CIRCUITS DATA SHEET TDA8705A 6-bit high-speed dual Analog-to-Digital Converter (ADC) Product speciﬁcation Supersedes data of November 1994 File under Integrated Circuits, IC02 1996 Jan 12 1 page Philips Semiconductors 6-bit high-speed dual Analog-to-Digital Converter (ADC) Product speciﬁcation TDA8705A LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VCCA VCCD VCCO ∆VCC ∆VCC ∆VCC VI Vclk(p-p) IO Tstg Tamb Tj PARAMETER CONDITIONS analog supply voltage note 1 digital supply voltage note 1 output stages supply voltage note 1 supply voltage differences between VCCA and VCCD supply voltage differences between VCCO and VCCD supply voltage differences between VCCA and VCCO input voltage referenced to AGND AC input voltage for switching (peak-to-peak value) referenced to DGND output current storage temperature operating ambient temperature junction temperature MIN. −0.3 −0.3 −0.3 −1.0 −1.0 −1.0 −0.3 − − −55 0 − MAX. +7.0 +7.0 +7.0 +1.0 UNIT V V V V +1.0 V +1.0 V +7.0 VCCD V V 10 +150 +70 +150 mA °C °C °C Note 1. The supply voltages VCCA, VCCO and VCCD may have any value between −0.3 V and +7 V provided the difference between VCCA, VCCO and VCCD is between −1 V and +1 V. HANDLING Inputs and outputs are protected against electrostatic discharges in normal handling. However, to be totally safe, it is desirable to take normal precautions appropriate to handling integrated circuits. THERMAL CHARACTERISTICS SYMBOL Rth j-a PARAMETER thermal resistance from junction to ambient in free air VALUE 70 UNIT K/W 1996 Jan 12 5 5 Page Philips Semiconductors 6-bit high-speed dual Analog-to-Digital Converter (ADC) APPLICATION INFORMATION Product speciﬁcation TDA8705A handbook, full pagewidth 100 nF 5V input A input B 100 nF 100 nF CLA(1) 5V 100 nF 100 nF 1 nF (2) C LB (1) 100 nF 100 nF 100 nF CLK V CCD DGND V RBA V RTA V IA AGND VCCA V RMA DEC V IB V RTB V RBB V RMB 1 2 3 4 5 6 7 TDA8705A 8 9 10 11 12 13 14 28 D5A 27 D4A 26 D3A 25 D2A 24 D1A 23 D0A 22 OGND 21 V CCO 20 D5B 19 D4B 18 D3B 17 D2B 16 D1B 15 D0B MLC377 5V 100 nF The analog and digital supplies should be separated and decoupled. VRT(n), VRM(n) and VRB(n) and DEC inputs are decoupled to AGND. (1) In the event of AC-coupling, CLA and CLB values are chosen in accordance with the classical low frequencies cut-off formulae fCL = 2-----×-----π-----×---1--R----I---×-----C----L- where input resistance RI is the value measured under DC conditions. In the event of DC-coupling, CLA and CLB capacitors are omitted. The DC biassing and AC modulation signal directly applied to inputs (pin 6 and 11), must be in the range of VRT(n) − VRB(n). (2) When pin 10 (DEC) is short-circuited to AGND, an external regulator can be connected to VRT(n) and VRB(n). Fig.6 Application diagram. 1996 Jan 12 11 11 Page

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