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參數資料
| 型號： | MAX1221BETX+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 1/44頁 |
| 文件大小： | 0K |
| 描述： | IC ADC/DAC 12BIT W/FIFO 36TQFNEP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 類型： | ADC，DAC |
| 分辨率（位）： | 12 b |
| 采樣率（每秒）： | 225k |
| 數據接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 電壓電源： | 模擬和數字 |
| 電源電壓： | 2.7 V ~ 5.25 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 36-WFQFN 裸露焊盤 |
| 供應商設備封裝： | 36-TQFN 裸露焊盤（6x6） |
| 包裝： | 帶卷 (TR) |
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General Description
The MAX1221/MAX1223/MAX1343 integrate a multichan-
nel, 12-bit, analog-to-digital converter (ADC) and a 12-bit,
digital-to-analog converter (DAC) in a single IC. The
devices also include a temperature sensor and config-
urable general-purpose I/O ports (GPIOs) with a 25MHz
SPI-/QSPI-/MICROWIRE-compatible serial inter-
face. The ADC is available in a 12 or an eight input-chan-
nel version. The DAC outputs settle within 2.0s, and the
ADC has a 225ksps conversion rate.
All devices include an internal reference (2.5V) providing
a well-regulated, low-noise reference for both the ADC
and DAC. Programmable reference modes for the ADC
and DAC allow the use of an internal reference, an exter-
nal reference, or a combination of both. Features such as
an internal ±1°C accurate temperature sensor, FIFO,
scan modes, programmable internal or external clock
modes, data averaging, and AutoShutdown allow users
to minimize both power consumption and processor
requirements. The low glitch energy (4nVs) and low digi-
tal feedthrough (0.5nVs) of the integrated DACs make
these devices ideal for digital control of fast-response
closed-loop systems.
The devices are guaranteed to operate with a supply volt-
age from +2.7V to +5.25V. The devices consume 2.5mA
at 225ksps throughput, only 22A at 1ksps throughput,
and under 0.2A in the shutdown mode. The MAX1221/
MAX1343 offer four GPIOs that can be configured as
inputs or outputs.
The MAX1221/MAX1223/MAX1343 are available in 36-pin
thin QFN packages. All devices are specified over the
-40°C to +85°C temperature range.
Applications
Closed-Loop Controls for Optical Components
and Base Stations
System Supervision and Control
Data-Acquisition Systems
Features
12-Bit, 225ksps ADC
Analog Multiplexer with True-Differential
Track/Hold (T/H)
12 Single-Ended Channels or Six Differential
Channels (Unipolar or Bipolar) (MAX1223)
Eight Single-Ended Channels or Four Differential
Channels (Unipolar or Bipolar)
(MAX1221/MAX1343)
Excellent Accuracy: ±0.5 LSB INL, ±0.5 LSB DNL
12-Bit, Octal, 2s Settling DAC
(MAX1221/MAX1223)
Ultra-Low Glitch Energy (4nVs)
Power-Up Options from Zero Scale or Full Scale
Excellent Accuracy: ±0.5 LSB INL
Internal Reference or External Single-Ended/
Differential Reference
Internal Reference Voltage 2.5V
Internal ±1°C Accurate Temperature Sensor
On-Chip FIFO Capable of Storing 16 ADC
Conversion Results and One Temperature Result
On-Chip Channel-Scan Mode and Internal
Data-Averaging Features
Analog Single-Supply Operation
+2.7V to +5.25V
2.7V to AVDD Digital Supply
25MHz, SPI/QSPI/MICROWIRE Serial Interface
AutoShutdown Between Conversions
Low-Power ADC
2.5mA at 225ksps
22A at 1ksps
0.2A at Shutdown
Low-Power DAC: 1.5mA
Evaluation Kit Available (Order MAX1258EVKIT)
MAX1221/MAX1223/MAX1343
12-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
________________________________________________________________
Maxim Integrated Products
1
Ordering Information/Selector Guide
19-4010; Rev 1; 12/07
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.
EVALUATION
KIT
AVAILABLE
Pin Configurations appear at end of data sheet.
PART
PIN-PACKAGE
REF
VOLTAGE
(V)
ANALOG
SUPPLY
VOLTAGE (V)
RESOLUTION
BITS**
ADC
CHANNELS
DAC
CHANNELS
GPIOs
PKG
CODE
MAX1221BETX
36 Thin QFN-EP*
2.5
2.7 to 5.25
12
8
4
T3666-3
MAX1223BETX
36 Thin QFN-EP*
2.5
2.7 to 5.25
12
8
0
T3666-3
MAX1343BETX
36 Thin QFN-EP*
2.5
2.7 to 5.25
12
8
4
T3666-3
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Note: All devices are specified over the -40°C to +85°C operating temperature range.
*
EP = Exposed pad.
**
Number of resolution bits refers to both DAC and ADC.
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