THS12082 Datasheet, PDF (1/38 Pages) Texas Instruments – 12-BIT, 8 MSPS, SIMULTANEOUS SAMPLING ANALOG-TO-DIGITAL CONVERTERS

THS12082
12-BIT, 8 MSPS, SIMULTANEOUS SAMPLING ANALOG-TO-DIGITAL CONVERTERS
features
D Simultaneous Sampling of 2 Single-Ended
Signals or 1 Differential Signal
D Integrated 16 Word FIFO
D Signal-to-Noise and Distortion Ratio: 66 dB
at f_I = 2 MHz
D Differential Nonlinearity Error: ±1 LSB
D Integral Nonlinearity Error: ±1.5 LSB
D Auto-Scan Mode for 2 Inputs
D 3-V or 5-V Digital Interface Compatible
D Low Power: 216 mW Max
D 5-V Analog Single Supply Operation
D Internal Voltage References . . . 50 PPM/°C
and ±5% Accuracy
D Parallel µC/DSP Interface
applications
D Radar Applications
D Communications
D Control Applications
D High-Speed DSP Front-End
D Automotive Applications
SLAS271 – MAY 2000
DA PACKAGE
(TOP VIEW)
D0 ₁
D1 ₂
D2 ₃
D3 4
D4 5
D5 6
BV_DD 7
BGND 8
D6 9
D7 10
D8 11
D9 12
RA0/D10 13
RA1/D11 14
CONV_CLK (CONVST) 15
DATA_AV 16
32 ^OV_FL
31 ^RESET
30 ^AINP
29 AINM
28 REFIN
27 REFOUT
26 REFP
25 REFM
24 AGND
23 AV_DD
22 CS0
21 CS1
20 WR (R/W)
19 RD
18 DV_DD
17 DGND
description
The THS12082 is a CMOS, low-power, 12-bit, 8 MSPS analog-to-digital converter (ADC). The speed,
resolution, bandwidth, and single-supply operation are suited for applications in radar, imaging, high-speed
acquisition, and communications. A multistage pipelined architecture with output error correction logic provides
for no missing codes over the full operating temperature range. Internal control registers allow for programming
the ADC into the desired mode. The THS12082 consists of two analog inputs, which are sampled
simultaneously. These inputs can be selected individually and confugured to single-ended or differential inputs.
An integrated 16 word deep FIFO allows the storage of data in order to take the load off of the processor
connected to the ADC. Internal reference voltages for the ADC (1.5 V and 3.5 V) are provided.
An external reference can also be chosen to suit the dc accuracy and temperature drift requirements of the
application. Two different conversion modes can be selected. In the single conversion mode, a single and
simultaneous conversion can be initiated by using the single conversion start signal (CONVST). The conversion
clock in the single conversion mode is generated internally using a clock oscillator circuit. In the continuous
conversion mode, an external clock signal is applied to the CONV_CLK input of the THS12082. The internal
clock oscillator is switched off in the continuous conversion mode.
The THS12082C is characterized for operation from 0°C to 70°C, and the THS12082I is characterized for
operation from –40°C to 85°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
Copyright © 2000, Texas Instruments Incorporated
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