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MAX115 Datasheet

  • MAX115

  • "2x4-Channel, Simultaneous- Sampling 12-Bit ADCs"

  • Maxim   Maxim

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19-1928; Rev 0; 1/01
IT
TION K
VALUA
E
BLE
AVAILA
2x4-Channel, Simultaneous-Sampling
12-Bit ADCs
____________________________Features
o
Four Simultaneous-Sampling T/H Amplifiers with
Two Multiplexed Inputs (Eight Single-Ended
Inputs Total)
o
2碌s Conversion Time per Channel
o
Throughput: 390ksps (1 Channel)
218ksps (2 Channels)
152ksps (3 Channels)
116ksps (4 Channels)
o
Input Range: 鹵 5V (MAX115)
鹵 2.5V (MAX116)
o
Fault-Protected Input Multiplexer (鹵17V)
o
Internal +2.5V or External Reference Operation
o
Programmable On-Board Sequencer
o
High-Speed Parallel DSP Interface
o
Internal 10MHz Clock
________________General Description
The MAX115/MAX116 are high-speed, multichannel,
12-bit data-acquisition systems (DAS) with simultane-
ous track/holds (T/Hs). These devices contain a 12-bit,
2碌s, successive-approximation analog-to-digital con-
verter (ADC), a +2.5V reference, a buffered reference
input, and a bank of four simultaneous-sampling T/H
amplifiers that preserve the relative phase information
of the sampled inputs. The MAX115/MAX116 have two
multiplexed inputs for each T/H, allowing a total of eight
inputs. In addition, the converter is overvoltage tolerant
to 鹵17V. A fault condition on any channel will not dam-
age the IC. Available input ranges are 鹵5V (MAX115)
and 鹵2.5V (MAX116).
The parallel interface鈥檚 data access and bus release
timing specifications are compatible with most popular
digital signal processors and 16-bit/32-bit microproces-
sors. The MAX115/MAX116 conversion results can be
accessed without resorting to wait-states.
MAX115/MAX116
________________________Applications
Multiphase Motor Control
Power-Grid Synchronization
Power-Factor Monitoring
Digital Signal Processing
Vibration and Waveform Analysis
PART
MAX115CAX
MAX115EAX
MAX116CAX
MAX116EAX
Ordering Information
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
PIN-PACKAGE
36 SSOP
36 SSOP
36 SSOP
36 SSOP
Pin Configuration
TOP VIEW
CH2B 1
CH2A 2
CH1B 3
CH1A 4
AV
DD
5
REFIN 6
REFOUT 7
AGND 8
D11 (MSB) 9
D10 10
D9 11
D8 12
D7 13
D6 14
D5 15
D4 16
DV
DD
17
DGND 18
36 AGND
35 CH3B
34 CH3A
33 CH4B
32 CH4A
Typical Operating Circuit
CH1A
CH1B
CH2A
CH2B
CH3A
CH3B
CH4A
CH4B
+5V
0.1碌F
0.1碌F
-5V
0.1碌F
0.1碌F
REFOUT
4.7碌F
CLK
16MHz
CONTROL INTERFACE
CONVST INT
CS
RD
WR
DGND
AV
SS
REFIN
DV
DD
+5V
AV
DD
AGND
A0
A1
D0/A2
D1/A3
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
MAX115
MAX116
31 AV
SS
30 INT
29 CONVST
28 RD
27 WR
26 CS
25 CLK
24 A0
23 A1
22 D0/A2 (LSB)
21 D1/A3
20 D2
19 D3
MAX115
MAX116
SSOP
________________________________________________________________
Maxim Integrated Products
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim鈥檚 website at www.maxim-ic.com.

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