PDF ADC1173CIJMX Data sheet ( Hoja de datos )

Número de pieza	ADC1173CIJMX
Descripción	8-Bit/ 3-Volt/ 15MSPS/ 33mW A/D Converter
Fabricantes	National Semiconductor
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No Preview Available ! February 1999 ADC1173 8-Bit, 3-Volt, 15MSPS, 33mW A/D Converter General Description The ADC1173 is a low power, 15 MSPS analog-to-digital converter that digitizes signals to 8 bits while consuming just 33 mW of power (typ). The ADC1173 uses a unique architec- ture that achieves 7.6 Effective Bits. Output formatting is straight binary coding. The excellent DC and AC characteristics of this device, to- gether with its low power consumption and +3V single supply operation, make it ideally suited for many video, imaging and communications applications, including use in portable equipment. Furthermore, the ADC1173 is resistant to latchup and the outputs are short-circuit proof. The top and bottom of the ADC1173’s reference ladder is available for connections, enabling a wide range of input possibilities. The ADC1173 is offered in SOIC (EIAJ) and TSSOP. It is de- signed to operate over the commercial temperature range of -20˚C to +75˚C. Features n Internal Sample-and-Hold Function n Single +3V Operation n Internal Reference Bias Resistors n Industry Standard Pinout n TRI-STATE® Outputs Key Specifications n Resolution 8 Bits n Maximum Sampling Frequency 15 MSPS (min) n THD −56 dB (typ) n DNL ±0.8 LSB (max) n ENOB at 3.58 MHz Input 7.6 Bits (typ) n Guaranteed No Missing Codes n Differential Phase 0.5 Degree (max) n Differential Gain 1.5% (typ) n Power Consumption 33mW (typ) (excluding reference current) Applications n Video Digitization n Digital Still Cameras n Set Top Boxes n Camcorders n Personal Computer Video n Digital Television n CCD Imaging n Electro-Optics Ordering Information ADC1173CIJM ADC1173CIJMX ADC1173CIMTC ADC1173CIMTCX SOIC (EIAJ) SOIC (EIAJ) (tape & reel) TSSOP TSSOP (tape & reel) Pin Configuration TRI-STATE® is a registered trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS100890 DS100890-1 www.national.com 1 page Converter Electrical Characteristics (Continued) The following specifications apply for AVDD = at 50% duty cycle. Boldface limits apply for DTVAD=D = +3.0VDC, OE = TMIN to TMAX; all 0V, VRT = other limits T+2A.0=V2, 5V˚CRB(N=o0teVs, CL = 7, 8) 20 pF, fCLK = 15MHz Symbol Parameter Conditions Typical (Note 9) Limits Units Analog Input and Reference Characteristics VRT - VRB Reference Voltage Delta Power Supply Characteristics 1.0 V(min) 2 VA V(max) IADD IDDD IAVDD + IDVDD Analog Supply Current Digital Supply Curretn Total Operating Current DVDD = AVDD = 3.6V DVDD = AVDD = 3.6V DVDD AVDD = 3.6V, DVDD = AVDD = 3.6V, CLK Low (Note 10) 6.8 2.3 9.1 11 5.8 mA mA mA mA Power Consumption CLK, OE Digital Input Characteristics DVDD = AVDD = 3.6V 33 40 mW VIH Logical High Input Voltage VIL Logical Low Input Voltage IIH Logical High Input Current IIL Logic Low Input Current CIN Logic Input Capacitance Digital Output Characteristics DVDD = AVDD = 3.6V DVDD = AVDD = 3.6V VIH = DVDD = AVDD = 3.6V VIL = 0V, DVDD = AVDD = 3.6V 2.2 V (min) 0.8 V (max) 5 µA −5 µA 5 pF VOH High Level Output Voltage VOL Low Level Output Voltage IOZH, IOZL Tri-State®Leakage Current AC Electrical Characteristics DVDD = 2.7V, IOH = −360µA DVDD = 2.7V, IOH = −1.1mA DVDD = 2.7V, IOL = 1.6mA DVDD = 3.6V, OE = DVDD, VOL = 0V or VOH = DVDD 2.4 V(min) 2.1 1.9 V(min) 0.32 0.6 V(max) ±20 µA fC1 fC2 tOD−0 tOD−1 Maximum Conversion Rate Minimum Conversion Rate Output Delay Output Delay Pipline Delay (Latency) CLK high to low data valid CLK low to high data valid 20 15 MHz(min) 1 MHz 28 ns(max) 24 ns(max) 2.5 Clock Cycles tDS tAJ tOH tEN tDIS ENOB SINAD SNR SFDR THD Sampling (Aperture) Delay Aperture Jitter Output Hold Time OE Low to Data Valid OE High to High Z State Effective Number of Bits Signal-to- Noise & Distortion Signal-to-Noise Ratio Spurious Free Dynamic Range Total Harmonic Distortion CLK low to acquissition of data CLK high to data invalid Loaded as in Figure 2 Loaded as in Figure 2 fIN = 1.31 MHz fIN = 3.58 MHz fIN = 7.5 MHz fIN = 1.31 MHz fIN = 3.58 MHz fIN = 7.5 MHz fIN = 1.31 MHz fIN = 3.58 MHz fIN = 7.5 MHz fIN = 1.31 MHz fIN = 3.58 MHz fIN = 7.5 MHz fIN = 1.31 MHz fIN = 3.58 MHz fIN = 7.5 MHz 3 ns 30 ps rms 15 ns 22 ns 12 ns 7.7 7.6 7.0 Bits (min) 7.4 49 47.7 46.5 43 dB(min) 49 48.7 48.0 44 dB(min) 65 55 dB 51 −62 −54 dB −51 5 www.national.com 5 Page Applications Information (Continued) DS100890-13 FIGURE 3. Simple, Low Component Count, Self -Bias Reference application. Because of resistor tolerances, the reference voltages can vary by as much as 6%. Choose an amplifier that can drive a dynamic capacitance (see text). 11 www.national.com 11 Page

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