19-3157; Rev 4; 10/08
8-/4-/2-Channel, 14-Bit, Simultaneous-Sampling ADCs
with ±10V, ±5V, and 0 to +5V Analog Input Ranges
General Description
The MAX1316–MAX1318/MAX1320–MAX1322/MAX1324–
MAX1326 14-bit, analog-to-digital converters (ADCs) offer
two, four, or eight independent input channels.
Independent track/hold (T/H) circuitry provides simultane-
ous sampling for each channel. The MAX1316/
MAX1317/MAX1318 have a 0 to +5V input range with
±6.0V fault-tolerant inputs. The MAX1320/MAX1321/
MAX1322 have a ±5V input range with ±16.5V fault-toler-
ant inputs. The MAX1324/MAX1325/MAX1326 have a
±10V input range with ±16.5V fault-tolerant inputs. These
ADCs convert two channels in 2µs, and up to eight chan-
nels in 3.8µs, and have an 8-channel throughput of
250ksps per channel. Other features include a 10MHz
T/H input bandwidth, internal clock, internal (+2.5V) or
external (+2.0V to +3.0V) reference, and power-
saving modes.
A 16.6MHz, 14-bit, bidirectional, parallel interface pro-
vides the conversion results and accepts digital config-
uration inputs.
These devices operate from a +4.75V to +5.25V analog
supply and a separate +2.7V to +5.25V digital supply,
and consume less than 50mA total supply current.
These devices come in a 48-pin LQFP package and oper-
ate over the extended -40°C to +85°C temperature range.
Features
♦
8-/4-/2-Channel, 14-Bit ADCs
±1.5 LSB INL, ±1 LSB DNL, No Missing Codes
90dBc SFDR, -86dBc THD, 76.5dB SINAD, 77dB
SNR at 100kHz Input
♦
On-Chip T/H Circuit for Each Channel
10ns Aperture Delay
50ps Channel-to-Channel T/H Matching
♦
Fast Conversion Time
One Channel in 1.6µs
Two Channels in 1.9µs
Four Channels in 2.5µs
Eight Channels in 3.7µs
♦
High Throughput
526ksps/ch for One Channel
455ksps/ch for Two Channels
357ksps/ch for Four Channels
250ksps/ch for Eight Channels
♦
Flexible Input Ranges
0 to +5V (MAX1316/MAX1317/MAX1318)
±5V (MAX1320/MAX1321/MAX1322)
±10V (MAX1324/MAX1325/MAX1326)
♦
No Calibration Needed
♦
14-Bit, High-Speed, Parallel Interface
♦
Internal or External Clock
♦
+2.5V Internal Reference or +2.0V to +3.0V
External Reference
♦
+5V Analog Supply, +3V to +5V Digital Supply
46mA Analog Supply Current (typ)
1.6mA Digital Supply Current (max)
Shutdown and Power-Saving Modes
♦
48-Pin LQFP Package (7mm x 7mm Footprint)
MAX1316–MAX1318/MAX1320–MAX1322/MAX1324–MAX1326
Applications
Multiphase Motor Control
Power-Grid Synchronization
Power-Factor Monitoring and Correction
Vibration and Waveform Analysis
Selector Guide
PART
MAX1316ECM
MAX1317ECM
MAX1318ECM
MAX1320ECM
MAX1321ECM
MAX1322ECM
MAX1324ECM
MAX1325ECM
MAX1326ECM
INPUT RANGE (V)
0 to +5
0 to +5
0 to +5
±5
±5
±5
±10
±10
±10
CHANNEL COUNT
8
4
2
8
4
2
8
4
2
Ordering Information
PART
MAX1316ECM
MAX1317ECM
MAX1318ECM
MAX1320ECM
MAX1321ECM
MAX1322ECM
MAX1324ECM
MAX1325ECM
MAX1326ECM
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
48 LQFP
48 LQFP
48 LQFP
48 LQFP
48 LQFP
48 LQFP
48 LQFP
48 LQFP
48 LQFP
Pin Configurations and Typical Operating Circuits appear at
end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
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.
8-/4-/2-Channel, 14-Bit, Simultaneous-Sampling ADCs
with ±10V, ±5V, and 0 to +5V Analog Input Ranges
MAX1316–MAX1318/MAX1320–MAX1322/MAX1324–MAX1326
ABSOLUTE MAXIMUM RATINGS
AV
DD
to AGND .........................................................-0.3V to +6V
DV
DD
to DGND.........................................................-0.3V to +6V
AGND to DGND.....................................................-0.3V to +0.3V
CH0–CH7, I.C. to AGND (MAX1316/MAX1317/MAX1318)...±6.0V
CH0–CH7, I.C. to AGND (MAX1320/MAX1321/MAX1322).±16.5V
CH0–CH7, I.C. to AGND (MAX1324/MAX1325/MAX1326).±16.5V
INTCLK/EXTCLK to AGND .......................-0.3V to (AV
DD
+ 0.3V)
EOC, EOLC, WR, RD, CS
to DGND .........-0.3V to (DV
DD
+ 0.3V)
CONVST, CLK, SHDN,
ALLON to DGND..................................-0.3V to (DV
DD
+ 0.3V)
MSV, REF
MS
, REF to AGND.....................-0.3V to (AV
DD
+ 0.3V)
REF+, COM, REF- to AGND.....................-0.3V to (AV
DD
+ 0.3V)
D0–D13 to DGND ....................................-0.3V to (DV
DD
+ 0.3V)
Maximum Current into Any Pin Except AV
DD
, DV
DD
,
AGND, DGND...............................................................±50mA
Continuous Power Dissipation
LQFP (derate 22.7mW/°C above +70°C) ...................1818mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
AVDD
= +5V, V
DVDD
= +3V, V
AGND
= V
DGND
= 0, V
REF
= V
REFMS
= +2.5V (external reference), C
REF
= C
REFMS
= 0.1µF, C
REF+
=
C
REF-
= 0.1µF, C
REF+-to-REF-
= 2.2µF || 0.1µF, C
COM
= 2.2µF || 0.1µF, C
MSV
= 2.2µF || 0.1µF (unipolar devices, MAX1316/
MAX1317/MAX1318), MSV = AGND (bipolar devices, MAX1320/MAX1321/MAX1322/MAX1324/MAX1325/MAX1326), f
CLK
= 10MHz,
50% duty cycle, INTCLK/EXTCLK = AGND (external clock), SHDN = DGND, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical val-
ues are at T
A
= +25°C.)
PARAMETER
STATIC PERFORMANCE (Note 1)
Resolution
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Offset Drift
Channel Offset Matching
Gain Error
Channel Gain-Error Matching
Gain Temperature Coefficient
DYNAMIC PERFORMANCE (at f
IN
= 100kHz, -0.4dB FS)
Signal-to-Noise Ratio
Signal-to-Noise and Distortion
Ratio
Spurious-Free Dynamic Range
Total Harmonic Distortion
Channel-to-Channel Isolation
ANALOG INPUTS (CH0–CH7)
MAX1316/MAX1317/MAX1318
Input Voltage Range
MAX1320/MAX1321/MAX1322
MAX1324/MAX1325/MAX1326
0
-5
-10
+5
+5
+10
V
SNR
SINAD
SFDR
THD
83
Unipolar
Bipolar
Unipolar
Bipolar
74.5
75
74.5
75
83
76
76.5
76
76.5
93
-90
-83
dB
dB
dBc
dBc
dB
N
INL
DNL
(Note 2)
No missing codes (Note 2)
Unipolar devices
Bipolar devices
Unipolar devices
Bipolar devices
Unipolar devices between all channels
Bipolar devices between all channels
(Note 3)
Between all channels
3
-4
-4
35
25
±8
80
60
±40
25
14
±0.8
±0.5
±2.0
±1
±40
±40
Bits
LSB
LSB
LSB
ppm/°C
LSB
LSB
LSB
ppm/°C
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
8-/4-/2-Channel, 14-Bit, Simultaneous-Sampling ADCs
with ±10V, ±5V, and 0 to +5V Analog Input Ranges
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD
= +5V, V
DVDD
= +3V, V
AGND
= V
DGND
= 0, V
REF
= V
REFMS
= +2.5V (external reference), C
REF
= C
REFMS
= 0.1µF, C
REF+
=
C
REF-
= 0.1µF, C
REF+-to-REF-
= 2.2µF || 0.1µF, C
COM
= 2.2µF || 0.1µF, C
MSV
= 2.2µF || 0.1µF (unipolar devices, MAX1316/
MAX1317/MAX1318), MSV = AGND (bipolar devices, MAX1320/MAX1321/MAX1322/MAX1324/MAX1325/MAX1326), f
CLK
= 10MHz,
50% duty cycle, INTCLK/EXTCLK = AGND (external clock), SHDN = DGND, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical val-
ues are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MAX1316/MAX1317/MAX1318
Input Current (Note 4)
MAX1320/MAX1321/MAX1322
MAX1324/MAX1325/MAX1326
MAX1316/MAX1317/MAX1318
Input Resistance (Note 4)
Input Capacitance
TRACK/HOLD
One channel
External-Clock Throughput Rate
(Note 5)
Two channels
Four channels
Eight channels
One channel (INTCLK/EXTCLK = AV
DD
)
Internal-Clock Throughput Rate
(Note 5)
Small-Signal Bandwidth
Full-Power Bandwidth
Aperture Delay
Aperture Jitter
Aperture-Delay Matching
INTERNAL REFERENCE
REFMS Voltage
REF Voltage
REF Temperature Coefficient
EXTERNAL REFERENCE (REF
MS
AND REF EXTERNALLY DRIVEN)
Input Current
REFMS Input Voltage Range
REF Voltage Input Range
REF Input Capacitance
REFMS Input Capacitance
DIGITAL INPUTS (D0–D7,
RD, WR, CS,
CLK, SHDN, ALLON, CONVST)
Input-Voltage High
V
IH
0.7 x
DV
DD
V
REFMS
V
REF
Unipolar devices
-250
2.0
2.0
2.5
2.5
15
15
+250
3.0
3.0
µA
V
V
pF
pF
V
REFMS
V
REF
2.475
2.475
2.500
2.500
30
2.525
2.525
V
V
ppm/°C
Two channels (INTCLK/EXTCLK = AV
DD
)
Four channels (INTCLK/EXTCLK = AV
DD
)
Eight channels (INTCLK/EXTCLK = AV
DD
)
526
455
357
250
526
455
357
250
10
10
16
50
100
MHz
MHz
ns
ps
RMS
ps
ksps
ksps
MAX1320/MAX1321/MAX1322
MAX1324/MAX1325/MAX1326
V
IN
= +5V
V
IN
= 0V
V
IN
= +5V
V
IN
= -5V
V
IN
= +10V
V
IN
= -10V
-1.13
-1.16
-0.157
MIN
TYP
0.54
-0.12
0.29
-0.87
0.56
-0.85
7.58
8.66
14.26
15
pF
kΩ
0.74
0.39
mA
MAX
0.72
UNITS
MAX1316–MAX1318/MAX1320–MAX1322/MAX1324–MAX1326
V
_______________________________________________________________________________________
3
8-/4-/2-Channel, 14-Bit, Simultaneous-Sampling ADCs
with ±10V, ±5V, and 0 to +5V Analog Input Ranges
MAX1316–MAX1318/MAX1320–MAX1322/MAX1324–MAX1326
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD
= +5V, V
DVDD
= +3V, V
AGND
= V
DGND
= 0, V
REF
= V
REFMS
= +2.5V (external reference), C
REF
= C
REFMS
= 0.1µF, C
REF+
=
C
REF-
= 0.1µF, C
REF+-to-REF-
= 2.2µF || 0.1µF, C
COM
= 2.2µF || 0.1µF, C
MSV
= 2.2µF || 0.1µF (unipolar devices, MAX1316/
MAX1317/MAX1318), MSV = AGND (bipolar devices, MAX1320/MAX1321/MAX1322/MAX1324/MAX1325/MAX1326), f
CLK
= 10MHz,
50% duty cycle, INTCLK/EXTCLK = AGND (external clock), SHDN = DGND, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical val-
ues are at T
A
= +25°C.)
PARAMETER
Input-Voltage Low
Input Hysteresis
Input Capacitance
Input Current
C
IN
I
IN
V
IN
= 0V or DV
DD
0.7 x
AV
DD
0.3 x
AV
DD
DV
DD
-
0.6
0.4
0.06
15
4.75
2.70
All channels selected
C
LOAD
= 100pF, all channels selected
(Note 6)
V
SHDN
= DV
DD
, V
CH
= float
V
RD
= V
WR
= DV
DD
, V
SHDN
= DV
DD
AV
DD
= +4.75V to +5.75V (Note 8)
0.1
50
46
1
5.25
5.25
56
1.6
10
2
1
SYMBOL
V
IL
15
15
±1
CONDITIONS
MIN
TYP
MAX
0.3 x
DV
DD
UNITS
V
mV
pF
µA
CLOCK-SELECT INPUT (INTCLK/EXTCLK)
Input-Voltage High
Input-Voltage Low
DIGITAL OUTPUTS (D0–D13,
EOC, EOLC)
Output-Voltage High
Output-Voltage Low
Tri-State Leakage Current
Tri-State Output Capacitance
POWER SUPPLIES
Analog-Supply Voltage
Digital-Supply Voltage
Analog-Supply Current
Digital-Supply Current
Shutdown Current (Note 7)
Power-Supply Rejection Ratio
AV
DD
DV
DD
I
AVDD
I
DVDD
I
AVDD
I
DVDD
PSRR
V
V
mA
mA
µA
dB
V
OH
V
OL
ISOURCE = 0.8mA
ISINK = 1.6mA
RD
≥
V
IH
or
CS
≥
V
IH
RD
≥
V
IH
or
CS
≥
V
IH
V
V
µA
pF
V
V
4
_______________________________________________________________________________________
8-/4-/2-Channel, 14-Bit, Simultaneous-Sampling ADCs
with ±10V, ±5V, and 0 to +5V Analog Input Ranges
TIMING CHARACTERISTICS (Figures 3, 4, 5, 6 and 7) (Tables 1, 3)
PARAMETER
Time-to-First-Conversion Result
SYMBOL
t
CONV
CONDITIONS
Internal clock
External clock, Figure 6
Internal clock
Time-to-Next-Conversion Result
CONVST Pulse-Width Low
(Acquisition Time)
CS
Pulse Width
RD
Pulse-Width Low
RD
Pulse-Width High
WR
Pulse-Width Low
CS
to
WR
WR
to
CS
CS
to
RD
RD
to
CS
Data-Access Time
(RD Low to Valid Data)
Bus-Relinquish Time (RD High)
EOC
Pulse Width
Input-Data Setup Time
Input-Data Hold Time
External-Clock Period
External-Clock High Period
External-Clock Low Period
External-Clock Frequency
Internal-Clock Frequency
CONVST High to CLK Edge
EOC
Low to
RD
t
19
t
20
20
t
NEXT
External clock, Figure 6
(Note 9)
0.16
30
30
30
30
(Note 10)
(Note 10)
(Note 10)
(Note 10)
30
30
Internal clock
t
12
t
14
t
15
t
16
t
17
t
18
Logic sensitive to rising edges
Logic sensitive to rising edges
(Note 11)
External clock, Figure 6
10
10
0.08
20
20
0.1
10
(Note 12)
0
12.5
10.00
80
1
MIN
TYP
1.6
16
0.3
3
100
0.36
MAX
1.8
UNITS
µs
Clock
cycles
µs
Clock
cycles
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Clock
cycles
ns
ns
µs
ns
ns
MHz
MHz
ns
ns
MAX1316–MAX1318/MAX1320–MAX1322/MAX1324–MAX1326
t
ACQ
t
2
t
3
t
4
t
5
t
6
t
7
t
8
t
9
t
10
t
11
Note 1:
Note 2:
Note 3:
Note 4:
For the MAX1316/MAX1317/MAX1318, V
IN
= 0 to +5V. For the MAX1320/MAX1321/MAX1322, V
IN
= -5V to +5V. For the
MAX1324/MAX1325/MAX1326, V
IN
= -10V to +10V.
All channel performance is guaranteed by correlation to a single channel test.
Offset nulled.
The analog input resistance is terminated to an internal bias point. Calculate the analog input current using:
I
CH _
=
V
CH _
−
V
BIAS
R
CH _
for V
CH
within the input voltage range.
Note 5:
Note 6:
Throughput rate is given per channel. Throughput rate is a function of clock frequency (f
CLK
= 10MHz). See the
Data
Throughput
section for more information.
All analog inputs are driven with an FS 100kHz sine wave.
_______________________________________________________________________________________
5
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