________________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,
2s, 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 ±17V. A fault condition on any channel will not dam-
age the IC. Available input ranges are ±5V (MAX115)
and ±2.5V (MAX116).
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. The MAX115/MAX116 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
o Four Simultaneous-Sampling T/H Amplifiers with
Two Multiplexed Inputs (Eight Single-Ended
Inputs Total)
o 2s Conversion Time per Channel
o Throughput: 390ksps (1 Channel)
218ksps (2 Channels)
152ksps (3 Channels)
116ksps (4 Channels)
o Input Range: ± 5V (MAX115)
± 2.5V (MAX116)
o Fault-Protected Input Multiplexer (±17V)
o Internal +2.5V or External Reference Operation
o Programmable On-Board Sequencer
o High-Speed Parallel DSP Interface
o Internal 10MHz Clock
MAX115/MAX116
2x4-Channel, Simultaneous-Sampling
12-Bit ADCs
________________________________________________________________ Maxim Integrated Products
1
19-1928; Rev 0; 1/01
PART
MAX115CAX
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
36 SSOP
EVALUATION
KIT
AVAILABLE
Ordering Information
MAX115EAX
-40°C to +85°C
36 SSOP
MAX116CAX
0°C to +70°C
36 SSOP
MAX116EAX
-40°C to +85°C
36 SSOP
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
36
35
34
33
32
31
30
29
28
27
26
25
24
23
1
2
3
4
5
6
7
8
9
10
11
12
13
14
AGND
CH3B
CH3A
CH4B
CH4A
AVSS
A1
INT
CONVST
RD
WR
CS
CLK
A0
D6
D7
D8
D9
D10
D11 (MSB)
AGND
REFOUT
REFIN
AVDD
CH1A
CH1B
CH2A
CH2B
SSOP
TOP VIEW
MAX115
MAX116
22
21
20
19
15
16
17
18
D3
D0/A2 (LSB)
D1/A3
D2
DGND
DVDD
D4
D5
Pin Configuration
Typical Operating Circuit
A0
A1
D0/A2
D1/A3
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
CH1A
CH1B
CH2A
CH2B
CH3A
CH3B
CH4A
CH4B
MAX115
MAX116
CONVST
CONTROL INTERFACE
CLK
REFOUT
DGND
AGND
REFIN
DVDD
4.7
F
16MHz
0.1
F
0.1
F
-5V
0.1
F
+5V
0.1
F
+5V
AVSS
AVDD
INT
CS
RD
WR