Maxim MAX1107EUB, MAX1107CUB, MAX1106EUB, MAX1106CUB Datasheet
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General Description
The MAX1106/MAX1107 low-power, 8-bit, single-channel,
analog-to-digital converters (ADCs) feature an internal
track/hold (T/H), voltage reference, clock, and serial interface. The MAX1106 is specified from +2.7V to +3.6V and
consumes only 96µA. The MAX1107 is specified from
+4.5V to +5.5V and consumes only 107µA. The analog
inputs are pin-configurable, allowing unipolar and singleended or differential operation.
The full-scale analog input range is determined by the
internal reference of +2.048V (MAX1106) or +4.096V
(MAX1107), or by an externally applied reference ranging from 1V to VDD. The MAX1106/MAX1107 also feature
a pin-selectable power-down mode that reduces power
consumption to 0.5µA when the device is not in use. The
3-wire serial interface directly connects to SPI™, QSPI™,
and MICROWIRE™ devices without external logic.
Conversions up to 25ksps are performed using the internal clock.
The MAX1106/MAX1107 are available in a 10-pin µMAX
package with a footprint that is just 20% of an
8-pin plastic DIP.
Applications
Portable Data Logging
Hand-Held Measurement Devices
Medical Instruments
System Diagnostics
Solar-Powered Remote Systems
4–20mA-Powered Remote Systems
Receive-Signal-Strength Indicators
Features
♦ Single Supply: +2.7V to +3.6V (MAX1106)
+4.5V to +5.5V (MAX1107)
♦ Low Power: 96µA at +3V and 25ksps
0.5µA in Power-Down Mode
♦ Pin-Programmable Configuration
♦ 0 to V
DD
Input Voltage Range
♦ Internal Track/Hold
♦ Internal Reference: +2.048V (MAX1106)
+4.096V (MAX1107)
♦ 1V to V
DD
Reference Input Range
♦ SPI/QSPI/MICROWIRE-Compatible Serial Interface
♦ Small 10-Pin µMAX Package
MAX1106/MAX1107
Single-Supply, Low-Power,
Serial 8-Bit ADCs
________________________________________________________________
Maxim Integrated Products
1
1
2
3
4
5
10
9
8
7
6
SCLK
DOUT
SHDN
CONVSTGND
IN-
IN+
V
DD
MAX1106
MAX1107
µMAX
TOP VIEW
REFINREFOUT
Functional Diagram
19-1432; Rev 0; 3/99
Pin Configuration
Ordering Information
PART
MAX1106CUB
MAX1106EUB -40°C to +85°C
0°C to +70°C
TEMP. RANGE PIN-PACKAGE
10 µMAX
10 µMAX
MAX1107CUB
MAX1107EUB -40°C to +85°C
0°C to +70°C 10 µMAX
10 µMAX
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
V
DD
CONVST
SCLK
OUTPUT
SHDN
MAX1106
MAX1107
SHIFT
REGISTER
DOUT
INTERNAL
CONTROL
LOGIC
IN+
IN-
REFOUT
REFIN
ANALOG
INPUT
MUX
REFERENCE
INTERNAL
OSCILLATOR
T/H
CHARGE
REDISTRIBUTION
DAC
SAR
GND
MAX1106/MAX1107
Single-Supply, Low-Power,
Serial 8-Bit ADCs
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX1106
(VDD= +2.7V to +3.6V; IN- to GND; f
SCLK
= 2MHz; 25ksps conversion rate; 1µF capacitor at REFOUT; external +2.048V reference at
REFIN; T
A
= T
MIN
to T
MAX
; unless otherwise noted. Typical values are at TA= +25°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.
VDDto GND..............................................................-0.3V to +6V
IN+, IN-, REFIN, REFOUT,
DOUT to GND..........................................-0.3V to (V
DD
+ 0.3V)
SHDN, SCLK, CONVST to GND...............................-0.3V to +6V
Continuous Power Dissipation (T
A
= +70°C)
10-pin µMAX (derate 5.6mW/°C above +70°C)............444mW
Operating Temperature Ranges
MAX110_CUB......................................................0°C to +70°C
MAX110_EUB ...................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec).............................+300°C
V
DD
= 2.7V to 3.6V
VDD= 5.5V (Note 2)
No missing codes over temperature
CONDITIONS
±0.15 ±0.5
Bits8Resolution
LSB
±0.2
INLRelative Accuracy (Note 1)
LSB±1DNLDifferential Nonlinearity
UNITSMIN TYP MAXSYMBOLPARAMETER
VDD= 5.5V (Note 2)
VDD= 2.7V to 3.6V
LSB
±0.5
Offset Error
±0.2 ±1
LSB±1Gain Error (Note 3)
ppm/°C±0.8Gain Temperature Coefficient
TA= T
MIN
to T
MAX
TA= +25°C
dB49SINADSignal-to-Noise Plus Distortion
dB-70THD
Total Harmonic Distortion
(up to the 5th harmonic)
LSB
±0.5
TUETotal Unadjusted Error
±1
-3dB rolloff
V
IN+
to V
IN-
MHz0.8Full-Power Bandwidth
MHz1.5BW
-3dB
Small-Signal Bandwidth
0V
REFIN
Input Voltage Range (Note 4)
dB68SFDRSpurious-Free Dynamic Range
VV
IN_
pF18C
IN
Input Capacitance
On/off-leakage current,
V
IN+
or V
IN-
= 0 or V
DD
µA±0.01 ±1Input Leakage Current
DC ACCURACY
DYNAMIC PERFORMANCE (10kHz sine-wave input, 2.048Vp-p, 25ksps conversion rate)
ANALOG INPUTS
V
MAX1106/MAX1107
Single-Supply, Low-Power,
Serial 8-Bit ADCs
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—MAX1106 (continued)
(VDD= +2.7V to +3.6V; IN- to GND; f
SCLK
= 2MHz; 25ksps conversion rate; 1µF capacitor at REFOUT; external +2.048V reference at
REFIN; T
A
= T
MIN
to T
MAX
; unless otherwise noted. Typical values are at TA= +25°C.)
CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER
Figure 7 µst
CONV
Conversion Time 35
µs1t
ACQ
Track/Hold Acquisition Time
ps<50Aperture Jitter
ns10Aperture Delay
kHz400Internal Clock Frequency
(Note 5)
0 to 0.5mA (Note 6)
ppm/°C±50REF Tempco
µA150I
REFSC
REF Short-Circuit Current
mV4Load Regulation
V1.968 2.048 2.128V
REFOUT
Output Voltage
+2.048V at REFIN, full scale µA120Input Current
V2.7 3 5.5V
DD
Supply Voltage
Power down, VDD= 3.6V
Full-scale input, VDD= 2.7V to 3.6V
0.5 2.5
I
DD
mV±0.4 ±4PSRPower-Supply Rejection (Note 8)
VDD= 3.6V, CL= 10pF
VDD= 5.5V, CL= 10pF 115
µF1Capacitive Bypass at REFOUT
V0.2V
HYST
Input Hysteresis
V0.8V
IL
Threshold Voltage Low
µA±1I
IH
Input Current High
VDD≤ 3.6V
VDD> 3.6V
2
V
3
V
IH
Threshold Voltage High
MHz2External Clock Frequency Range
V1.0 VDD+ 0.05V
REFIN
Input Voltage Range
µA±1I
IL
Input Current Low
pF15C
IN
Input Capacitance
For data transfer only
96 250
µASupply Current (Notes 2, 7)
TRACK/HOLD
INTERNAL REFERENCE
EXTERNAL REFERENCE
POWER REQUIREMENTS
DIGITAL INPUTS (SHDN, SCLK, and CONVST)
V
MAX1106/MAX1107
Single-Supply, Low-Power,
Serial 8-Bit ADCs
4 _______________________________________________________________________________________
Figure 6, DOUT High-Z
Figure 6, DOUT High-Z
pF15C
OUT
Three-State Output Capacitance
µA±0.01 ±10I
L
Three-State Leakage Current
Figure 1, C
LOAD
= 100pF
Figure 1, C
LOAD
= 100pF
ns20 200t
DO
SCLK Fall to Output Data Valid
ns
CONDITIONS
240t
DV
CONVST Rise to Output Enable
ns200t
CH
SCLK Pulse Width High
µs1t
CSPW
CONVST Pulse Width High
µs1t
ACQ
Acquisition Time
µs35t
CONV
CONVST Fall to Output Data
Valid
External reference
Figure 2, C
LOAD
= 100pF
Internal reference (Note 9)
µs20
ns240t
SHDN
SHDN Fall to Output Disable
ms12
t
WAKE
Wake-Up Time
Figure 2, C
LOAD
= 100pF ns240t
TR
SCLK Low to Output Disable
ns200t
CL
SCLK Pulse Width Low
ns100t
SCC
SCLK Low to CONVST Rise
UNITSMIN TYP MAXSYMBOLPARAMETER
I
SINK
= 5mA
I
SOURCE
= 0.5mA
I
SINK
= 16mA
0.4
VVDD- 0.5V
OH
Output High Voltage
V
0.8
V
OL
Output Low Voltage
ELECTRICAL CHARACTERISTICS—MAX1106 (continued)
(VDD= +2.7V to +3.6V; IN- to GND; f
SCLK
= 2MHz; 25ksps conversion rate; 1µF capacitor at REFOUT; external +2.048V reference at
REFIN; T
A
= T
MIN
to T
MAX
; unless otherwise noted. Typical values are at TA= +25°C.)
DIGITAL OUTPUT (DOUT)
TIMING CHARACTERISTICS (Figures 6 and 7)
MAX1106/MAX1107
Single-Supply, Low-Power,
Serial 8-Bit ADCs
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS—MAX1107
(VDD= +4.5V to +5.5V; IN- = GND; f
SCLK
= 2MHz; 25ksps conversion rate; 1µF capacitor at REFOUT; external +4.096V reference at
REFIN; T
A
= T
MIN
to T
MAX
; unless otherwise noted. Typical values are at TA= +25°C.)
ps<50Aperture Jitter
ns10Aperture Delay
kHz400Internal Clock Frequency
0 to 0.5mA (Note 6)
ppm/°C±50REF Tempco
mA
CONDITIONS
5I
REFSC
REF Short-Circuit Current
mV4Load Regulation
MHz
V3.936 4.096 4.256V
REFOUT
Output Voltage
µF1Capacitive Bypass at REFOUT
UNITSMIN TYP MAXSYMBOLPARAMETER
dBSINADSignal-to-Noise Plus Distortion 49
µs1t
ACQ
Track/Hold Acquisition Time
Figure 7 µst
CONV
Conversion Time 35
SFDRSpurious-Free Dynamic Range dB
dB
68
THD
Total Harmonic Distortion
(up to the 5th harmonic)
-70
Full-Power Bandwidth MHz
V
IN+
to V
IN-
0V
REFIN
-3dB rolloff MHz
0.8
BW
-3dB
Small-Signal Bandwidth 1.5
V
IN_
Input Voltage Range (Note 4) V
Input Leakage Current µA
On/off-leakage current,
V
IN+
or V
IN-
= 0 or V
DD
±0.01 ±1
pFC
IN
Input Capacitance 18
2External Clock Frequency Range For data transfer only
TA= T
MIN
to T
MAX
±0.5
TA= +25°C
LSB
±1
TUETotal Unadjusted Error
ppm/°C±0.8Gain Temperature Coefficient
LSB±1Gain Error (Note 3)
LSB±0.2 ±1Offset Error
No missing codes over temperature LSB±1DNLDifferential Nonlinearity
LSB±0.15 ±0.5INLRelative Accuracy (Note 1)
Bits8Resolution
DC ACCURACY
DYNAMIC PERFORMANCE (10kHz sine-wave input, 4.096Vp-p, 25ksps conversion rate)
ANALOG INPUTS
TRACK/HOLD
INTERNAL REFERENCE
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