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參數(shù)資料
| 型號： | MAX126EVKIT |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 1/15頁 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX126 |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 1 |
| ADC 的數(shù)量： | 4 |
| 位數(shù)： | 14 |
| 采樣率（每秒）： | 250k |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 輸入范圍： | ±2.5 V |
| 在以下條件下的電源（標準）： | 165mW @ 250kSPS |
| 工作溫度： | 0°C ~ 70°C |
| 已用 IC / 零件： | MAX126 |
| 已供物品： | 板，CD |
General Description
The MAX125/MAX126 are high-speed, multichannel,
14-bit data-acquisition systems (DAS) with simultaneous
track/holds (T/Hs). These devices contain a 14-bit, 3s,
successive-approximation analog-to-digital converter
(ADC), a +2.5V reference, a buffered reference input,
and a bank of four simultaneous-sampling T/H ampli-
fiers that preserve the relative phase information of the
sampled inputs. The MAX125/MAX126 have two multi-
plexed inputs for each T/H, allowing a total of eight
inputs. In addition, the converter is overvoltage tolerant
to ±17V; a fault condition on any channel will not harm
the IC. Available input ranges are ±5V (MAX125) and
±2.5V (MAX126).
An on-board sequencer converts one to four channels
per CONVST pulse. In the default mode, one T/H output
(CH1A) is converted. An interrupt signal (INT) is provided
after the last conversion is complete. Convert two,
three, or four channels by reprogramming the
MAX125/MAX126 through the bidirectional parallel
interface. Once programmed, the MAX125/MAX126
continue to convert the specified number of channels
per CONVST pulse until they are reprogrammed. The
channels are converted sequentially, beginning with
CH1. The INT signal always follows the end of the last
conversion in a conversion sequence. The ADC con-
verts each assigned channel in 3s and stores the
result in an internal 14x4 RAM. Upon completion of the
conversions, data can be accessed by applying suc-
cessive pulses to the RD pin. Four successive reads
access four data words sequentially.
The parallel interface’s data-access and bus-release
timing specifications are compatible with most popular
digital signal processors and 16-bit/32-bit microproces-
sors, so the MAX125/MAX126 conversion results can
be accessed without resorting to wait states.
Applications
Multiphase Motor Control
Power-Grid Synchronization
Power-Factor Monitoring
Digital Signal Processing
Vibration and Waveform Analysis
Features
Four Simultaneous-Sampling T/H Amplifiers with
Two Multiplexed Inputs (eight single-ended inputs
total)
3s Conversion Time per Channel
Throughput: 250ksps (1 channel)
142ksps (2 channels)
100ksps (3 channels)
76ksps (4 channels)
Input Range: ±5V (MAX125)
±2.5V (MAX126)
Fault-Protected Input Multiplexer (±17V)
±5V Supplies
Internal +2.5V or External Reference Operation
Programmable On-Board Sequencer
High-Speed Parallel DSP Interface
MAX125/MAX126
2x4-Channel, Simultaneous-Sampling
14-Bit DAS
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
19-1319; Rev 3; 7/08
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Typical Operating Circuit appears at end of data sheet.
Pin Configuration appears at end of data sheet.
EVALUATION
KIT
AVAILABLE
PART
TEMP RANGE
PIN-PACKAGE
INL
(LSB)
MAX125CCAX
0°C to +70°C
36 SSOP
±4
MAX125CEAX
-40°C to +85°C
36 SSOP
±4
MAX126CCAX
0°C to +70°C
36 SSOP
±4
MAX126CEAX
-40°C to +85°C
36 SSOP
±4
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