ADC1175-50_07 Datasheet, PDF (1/20 Pages) National Semiconductor (TI) – 8-Bit, 50 MSPS, 125 mW A/D Converter

September 2007
ADC1175-50
8-Bit, 50 MSPS, 125 mW A/D Converter
General Description
The ADC1175-50 is a low power, 50 MSPS analog-to-digital
converter that digitizes signals to 8 bits while consuming just
125 mW (typ). The ADC1175-50 uses a unique architecture
that achieves 6.8 Effective Bits at 25 MHz input and 50 MHz
clock frequency. Output formatting is straight binary coding.
The excellent DC and AC characteristics of this device, to-
gether with its low power consumption and +5V single supply
operation, make it ideally suited for many video and imaging
applications, including use in portable equipment. Further-
more, the ADC1175-50 is resistant to latch-up and the outputs
are short-circuit proof. The top and bottom of the
ADC1175-50's reference ladder is available for connections,
enabling a wide range of input possibilities. The low input ca-
pacitance (7 pF, typical) makes this device easier to drive than
conventional flash converters and the power down mode re-
duces power consumption to less than 5 mW.
The ADC1175-50 is offered in TSSOP and is designed to op-
erate over the extended commercial temperature range of
−20°C to +75°C.
Features
■ ^{Internal Track-and-Hold function}
■ ^{Single +5V operation}
■ ^{Internal reference bias resistors}
■ ^{Industry standard pinout}
■ ^{Power-down mode (<5 mW)}
Key Specifications
■ ^Resolution
■ ^{Maximum Sampling Frequency}
■ ^THD
■ ^DNL
■ ^{ENOB @ f}_IN ^{= 25 MHz}
■ ^{Guaranteed No Missing Codes}
■ ^{Power Consumption (Excluding Ref-}
erence Current)
8 Bits
50 MSPS (min)
54 dB (typ)
0.7 LSB (typ)
6.8 Bits (typ)
125 mW (typ), 190
mW (max)
Applications
■ ^{Digital Still Cameras}
■ ^{CCD Imaging}
■ ^{Electro-Optics}
■ ^{Video Digitization}
■ ^Multimedia
Connection Diagrams
24-pin SOIC and TSSOP
24-pin LLP (CSP)
Top View
10089601
SOIC obsolete. Shown for reference only
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© 2007 National Semiconductor Corporation 100896
Bottom View
10089634
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