ADC1175-50CIMTX National Semiconductor, ADC1175-50CIMTX Datasheet

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ADC1175-50CIMTX

Manufacturer Part Number
ADC1175-50CIMTX
Description
ADC Single Pipelined 50MSPS 8-Bit Parallel 24-Pin TSSOP T/R
Manufacturer
National Semiconductor
Datasheet

Specifications of ADC1175-50CIMTX

Package
24TSSOP
Resolution
8 Bit
Sampling Rate
50000 KSPS
Architecture
Pipelined
Number Of Analog Inputs
1
Digital Interface Type
Parallel
Input Type
Voltage
Signal To Noise Ratio
48(Typ) dB
Polarity Of Input Voltage
Unipolar

Available stocks

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Price
Part Number:
ADC1175-50CIMTX/NOPB
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Quantity:
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Part Number:
ADC1175-50CIMTX/NOPB
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© 2007 National Semiconductor Corporation
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.
Connection Diagrams
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
SOIC obsolete. Shown for reference only
24-pin SOIC and TSSOP
Top View
100896
10089601
Features
Key Specifications
Applications
Internal Track-and-Hold function
Single +5V operation
Internal reference bias resistors
Industry standard pinout
Power-down mode (<5 mW)
Resolution
Maximum Sampling Frequency
THD
DNL
ENOB @ f
Guaranteed No Missing Codes
Power Consumption (Excluding Ref-
erence Current)
Digital Still Cameras
CCD Imaging
Electro-Optics
Video Digitization
Multimedia
IN
= 25 MHz
24-pin LLP (CSP)
Bottom View
10089634
125 mW (typ), 190
September 2007
50 MSPS (min)
www.national.com
0.7 LSB (typ)
6.8 Bits (typ)
54 dB (typ)
mW (max)
8 Bits

Related parts for ADC1175-50CIMTX

ADC1175-50CIMTX Summary of contents

Page 1

... 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. ...

Page 2

... Ordering Information Order Code ADC1175-50CIJM * ADC1175-50CIJMX * ADC1175-50CIMT ADC1175-50CIMTX ADC1175-50CILQ * ADC1175-50CILQX * ADC1175-50EVAL * Obsolete in the SOIC (EIAJ) and LLP packages. The Evaluation Board is also discontinued. Shown for reference only. Block Diagram www.national.com Temperature Range Description −20°C to +70°C SOIC (EIAJ) −20°C to +70°C SOIC (EIAJ) tape and reel − ...

Page 3

... Bypass well RB (unless grounded). See Section 2.0 for more information. CMOS/TTL compatible Digital input that, when high, puts the ADC1175-50 into a power-down mode where total power consumption is typically less than 5 mW. With this pin low, the device is in the normal operating mode ...

Page 4

... Positive analog supply pin. Connect to a quiet voltage source of +5V. AV source and be separately bypassed with a 10 µF capacitor and a 0.1 µF ceramic chip capacitor. See Section 4.0 for more information. The ground return for the analog supply. AV should be connected together close to the ADC1175-50 package. 4 Description is sampled on IN ...

Page 5

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage ( Voltage on Any Input or Output Pin Reference Voltage ( CLK, PD Voltage Range Digital Output Voltage ( Input Current at Any Pin (Note 3) Package Input Current (Note 3) Power Dissipation 25° ...

Page 6

Symbol Parameter Reference Top Self Bias V RT Voltage Reference Bottom Self Bias V RB Voltage V – RTS Self Bias Voltage Delta V RBS V – V Reference Voltage Differential RT RB CONVERTER DYNAMIC CHARACTERISTICS ENOB Effective Number of ...

Page 7

... JA for maximum power dissipation listed above will be reached only when the ADC1175-50 is operated in a severe fault condition (e.g., when input or output pins are driven beyond the power supply voltages, or the power supply polarity is reversed). Obviously, such conditions should always be avoided. ...

Page 8

Typical Performance Characteristics INL Plot INL vs. Temperature SNR vs. Temp & f www.national.com 5V 10089611 10089613 IN 10089615 MHz, unless otherwise stated. CLK DNL Plot 10089612 DNL vs. Temperature ...

Page 9

SINAD & ENOB vs. Temp & 10089617 SFDR vs. Temp & 10089619 Power Supply Current vs. f CLK 10089621 SINAD & ENOB vs. Clock Duty Cycle t vs. Temperature OD Spectral Response 9 10089618 10089620 10089622 ...

Page 10

Specification Definitions ANALOG INPUT BANDWIDTH is a measure of the frequen which the reconstructed output fundamental drops 3 dB below its low frequency value for a full scale input. The test is performed with f equal to 100 ...

Page 11

... Timing Diagram FIGURE 1. ADC1175-50 Timing Diagram 10089624 FIGURE Test Circuit EN DIS 11 10089623 www.national.com ...

Page 12

... RTS LMH6609 have been found to be excellent amplifiers for driv- is ing the ADC1175-50. Do not drive the input beyond the supply RT rails. Figure 3 shows an example of an input circuit using the LMH6702. Driving the analog input with input signals up to 2.8 V ...

Page 13

... FIGURE 3. Driving the ADC1175-50. Choose an op-amp that can drive a dynamic capacitance. 13 10089625 www.national.com ...

Page 14

... RT to provide top and bot- The ADC1175-50 is designed to operate with top and bottom references of 2.6V and 0.6V, respectively. However, it will function with reduced performance with a top reference volt- is tied to age as high ground ...

Page 15

... Because of this, the output data tran- sition occurs very near the falling edge of the ADC clock. To avoid clocking errors, you should use the rising edge of the ADC clock to latch the output data of the ADC1175-50 and not use the falling edge. 4.0 POWER SUPPLY CONSIDERATIONS Many A/D converters draw sufficient transient current to cor- rupt their own power supplies if not adequately bypassed ...

Page 16

... DYNAMIC PERFORMANCE The ADC1175-50 is a.c. tested and its dynamic performance is guaranteed. To meet the published specifications, the clock source driving the CLK input must be free of jitter. For best a ...

Page 17

... The LMH6702 and the LMH6609 have been found excellent device for driving the ADC1175-50. Also re- member to use the RC between the driving source and the ADC input, as explained in Section 1.0. Driving the V pin or the V pin with devices that can RT RB not source or sink the current required by the ladder. As mentioned in Section 2 ...

Page 18

... Physical Dimensions Product in the SOIC (EIAJ) package is obsolete. Shown for reference only. www.national.com inches (millimeters) unless otherwise noted 24-Lead Package JM Order Number ADC1175-50CIJM NS Package Number M24D 24-Lead Package TC Order Number ADC1175-50CIMT NS Package Number MTC24 18 ...

Page 19

... Package LLP Order Number ADC1175-50CILQX NS Package Number LQA24A 19 www.national.com ...

Page 20

... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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