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MAX1148BCUP+ Datasheet

  • MAX1148BCUP+

  • IC, ADC, SERIAL 14 BIT, 8-CH, SMD; Resolution (Bits):14bit; ...

  • 25頁

  • Maxim   Maxim

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19-3488; Rev 1; 1/05
KIT
ATION
EVALU
E
BL
AVAILA
Multichannel, True-Differential,
Serial, 14-Bit ADCs
General Description
Features
鈾?/div>
8-Channel Single-Ended or 4-Channel Differential
Inputs (MAX1148/MAX1149)
鈾?/div>
4-Channel Single-Ended or 2-Channel Differential
Inputs (MAX1146/MAX1147)
鈾?/div>
Internal Multiplexer and T/H
鈾?/div>
Single-Supply Operation
4.75V to 5.25V Supply (MAX1146/MAX1148)
2.7V to 3.6V Supply (MAX1147/MAX1149)
鈾?/div>
Internal Reference
+4.096V (MAX1146/MAX1148)
+2.500V (MAX1147/MAX1149)
鈾?/div>
116ksps Sampling Rate
鈾?/div>
Low Power
1.1mA (116ksps)
120碌A(chǔ) (10ksps)
12碌A(chǔ) (1ksps)
300nA (Power-Down Mode)
鈾?/div>
SPI-/QSPI-/MICROWIRE Compatible
鈾?/div>
20-Pin TSSOP
MAX1146鈥揗AX1149
The MAX1146鈥揗AX1149 low-power, 14-bit, multichan-
nel, analog-to-digital converters (ADCs) feature an
internal track/hold (T/H), voltage reference, and clock.
The MAX1146/MAX1148 operate from a single +4.75V
to +5.25V supply, and the MAX1147/MAX1149 operate
from a single +2.7V to +3.6V supply. All analog inputs
are software configurable for unipolar/bipolar and sin-
gle-ended/differential operation.
The 4-wire serial interface connects directly to
SPI鈩?QSPI鈩?MICROWIRE鈩?devices without external
logic. The serial strobe output (SSTRB) allows conve-
nient connection to digital signal processors. The
MAX1146鈥揗AX1149 use an internal clock or an exter-
nal serial-interface clock to perform successive-approx-
imation analog-to-digital conversions.
The MAX1146/MAX1148 include an internal +4.096V
reference, while the MAX1147/MAX1149 include an
internal +2.500V reference. All devices accept an exter-
nal reference from 1.5V to V
DD
.
The MAX1146鈥揗AX1149 provide a hardware shutdown
and two software power-down modes. Using the soft-
ware power-down modes allows the devices to be pow-
ered down between conversions. When powered down,
accessing the serial interface automatically powers up
the devices. The quick turn-on time allows power-down
between all conversions. This technique reduces sup-
ply current to under 120碌A(chǔ) for quick turn-on.
The MAX1146鈥揗AX1149 are available in a 20-pin
TSSOP package.
Applications
Portable Data Logging
Data Acquisition
Medical Instruments
Battery-Powered Instruments
Process Control
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Pin Configurations appear at end of data sheet.
Ordering Information/Selector Guide
PART
MAX1146BCUP
MAX1146BEUP
MAX1147BCUP
MAX1147BEUP
MAX1148BCUP
MAX1148BEUP
MAX1149BCUP
MAX1149BEUP
TEMP
RANGE
0擄C to +70擄C
-40擄C to +85擄C
0擄C to +70擄C
-40擄C to +85擄C
0擄C to +70擄C
-40擄C to +85擄C
0擄C to +70擄C
-40擄C to +85擄C
PIN-
PACKAGE
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
INL
(LSB)
鹵2
鹵2
鹵2
鹵2
鹵2
鹵2
鹵2
鹵2
INPUT
CHANNELS
4
4
4
4
8
8
8
8
INTERNAL
REFERENCE (V)
+4.096
+4.096
+2.500
+2.500
+4.096
+4.096
+2.500
+2.500
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

MAX1148BCUP+ 產(chǎn)品屬性

  • Lead (SnPb) Finish for COTSObsolescence Mitigation Program

  • 74

  • 集成電路 (IC)

  • 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器

  • -

  • 14

  • 116k

  • MICROWIRE?，QSPI?，串行，SPI?

  • 1

  • 879mW

  • 單電源

  • 0°C ~ 70°C

  • 表面貼裝

  • 20-TSSOP（0.173"，4.40mm 寬）

  • 20-TSSOP

  • 管件

  • 8 個單端，單極；8 個單端，雙極；4 個差分，單極；4 個差分，雙極

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