19-4773; Rev 0; 7/98
KIT
EVALUATION
AVAILABLE
Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface
Description
12-bit data require only a single accept signals at their above the power-supply systems provide eight independently software ranges: ±10V, ±5V, 0 to and ±VREF, ±VREF/2, 0 MAX128. This range dynamic range to 14 to interface 4–20mA, directly to a single converters are fault proon any channel will of the selected channel. bandwidth track/hold,
the option of an internal
Features
♦12-Bit Resolution, 1/2 LSB Linearity
♦+5V Single-Supply Operation
♦I2C-Compatible, 2-Wire Serial Interface
♦Four Software-Selectable Input Ranges MAX127: 0 to +10V, 0 to +5V, ±10V, ±5V MAX128: 0 to +VREF, 0 to +VREF/2, ±V REF,
±V REF/2
♦8 Analog Input Channels
♦8ksps Sampling Rate
♦±16.5V Overvoltage-Tolerant Input Multiplexer
♦Internal 4.096V or External Reference
♦Two Power-Down Modes
♦24-Pin Narrow DIP or 28-Pin SSOP Packages
The MAX127/MAX128 feature a 2-wire, I2C-compatible serial interface that allows communication among multiple devices using SDA and SCL lines.
A hardware shutdown input (SHDN) and two softwareprogrammable power-down modes (standby and full power-down) are provided for low-current shutdown between conversions. In standby mode, the referencebuffer remains active, eliminating start-up delays.
The MAX127/MAX128 are available in 24-pin DIP or space-saving 28-pin SSOP packages.
Applications
Industrial Control Systems
Data-Acquisition Systems
Robotics
Automatic Testing
Battery-Powered Instruments
Medical Instruments
Ordering Information
PART |
TEMP. RANGE |
PIN-PACKAGE |
INL |
|
(LSB) |
||||
|
|
|
||
|
|
|
|
|
MAX127ACNG |
0°C to +70°C |
24 Narrow Plastic DIP |
±1/2 |
|
|
|
|
|
|
MAX127ACNG |
0°C to +70°C |
24 Narrow Plastic DIP |
±1 |
|
|
|
|
|
Ordering Information continued at end of data sheet.
Typical Operating Circuit
|
|
|
+5V |
|
|
|
|
0.1μF |
|
|
|
|
|
|
|
|
μC |
|
|
|
VDD |
|
|
|
|
|
SHDN |
SCL |
SDA |
|
|
|
|
|
|
|
CH0 |
|
|
|
|
|
CH1 |
|
|
|
1k |
ANALOG |
CH2 |
MAX127 |
|
||
CH3 |
|
|
|||
INPUTS |
CH4 |
MAX128 |
|
|
|
|
CH5 |
|
|
|
|
|
CH6 |
|
|
|
|
|
CH7 |
|
|
|
|
|
|
|
SCL |
|
|
|
|
|
SDA |
|
|
|
REF |
|
A0 |
|
|
|
|
A1 |
|
|
|
|
REFADJ |
A2 |
|
|
|
4.7μF |
0.01μF |
DGND |
AGND |
|
|
Pin Configurations appear at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
MAX127/MAX128
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468.
MAX127/MAX128
Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface
ABSOLUTE MAXIMUM RATINGS
VDD to AGND............................................................ |
-0.3V to +6V |
AGND to DGND..................................................... |
-0.3V to +0.3V |
CH0–CH7 to AGND ......................................................... |
±16.5V |
REF to AGND.............................................. |
-0.3V to (VDD + 0.3V) |
REFADJ to AGND....................................... |
-0.3V to (VDD + 0.3V) |
A0, A1, A2 to DGND................................... |
-0.3V to (VDD + 0.3V) |
SHDN, SCL, SDA to DGND ...................................... |
-0.3V to +6V |
Max Current into Any Pin .................................................... |
50mA |
Continuous Power Dissipation (TA = +70°C)
24-Pin Narrow DIP (derate 13.33mW/°C above +70°C)..1067mW
28-Pin SSOP (derate 9.52mW/°C above +70°C) |
...............762mW |
|
Operating Temperature Ranges |
|
|
MAX127_ C_ _/MAX128_ C_ _............................. |
|
0°C to +70°C |
MAX127_ E_ _/MAX128_ E_ _ .......................... |
|
- 40°C to +85°C |
Storage Temperature Range ............................ |
-65°C to +150°C |
|
Lead Temperature (soldering, 10sec) ............................ |
|
+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
(VDD = +5V ±5%; unipolar/bipolar range; external reference mode, VREF = 4.096V; 4.7µF at REF; external clock, fCLK = 400kHz; TA = TMIN to TMAX; unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER |
SYMBOL |
|
CONDITIONS |
MIN |
TYP |
MAX |
UNITS |
|
|
|
|
|
|
|
|
ACCURACY (Note 1) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Resolution |
|
|
|
12 |
|
|
Bits |
|
|
|
|
|
|
|
|
Integral Nonlinearity |
INL |
MAX127A/MAX128A |
|
|
±1/2 |
LSB |
|
|
|
|
|
|
|||
MAX127B/MAX128B |
|
|
±1 |
||||
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
Differential Nonlinearity |
DNL |
|
|
|
|
±1 |
LSB |
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
Unipolar |
MAX127A/MAX128A |
|
|
±3 |
|
|
|
|
|
|
|
|
|
Offset Error |
|
MAX127B/MAX128B |
|
|
±5 |
LSB |
|
|
|
|
|
||||
|
|
|
|
|
|
||
|
Bipolar |
MAX127A/MAX128A |
|
|
±5 |
||
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
MAX127B/MAX128B |
|
|
±10 |
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
Channel-to-Channel Offset |
|
Unipolar |
|
±0.1 |
|
LSB |
|
Error Matching |
|
|
|
|
|
|
|
|
Bipolar |
|
±0.3 |
|
|||
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
Unipolar |
MAX127A/MAX128A |
|
|
±7 |
|
|
|
|
|
|
|
|
|
Gain Error (Note 2) |
|
MAX127B/MAX128B |
|
|
±10 |
LSB |
|
|
|
|
|
||||
|
|
|
|
|
|
||
|
|
Bipolar |
MAX127A/MAX128A |
|
|
±7 |
|
|
|
|
|
|
|
|
|
|
|
MAX127B/MAX128B |
|
|
±10 |
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
Gain Tempco (Note 2) |
|
Unipolar |
|
3 |
|
ppm/°C |
|
|
|
|
|
|
|
||
|
Bipolar |
|
5 |
|
|||
|
|
|
|
|
|||
|
|
|
|
|
|
||
DYNAMIC SPECIFICATIONS (800Hz sine-wave input, ±10Vp-p (MAX127) or ±4.096Vp-p (MAX128), fSAMPLE = 8ksps) |
|
||||||
Signal-to-Noise plus Distortion |
SINAD |
|
|
70 |
|
|
dB |
Ratio |
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total Harmonic Distortion |
THD |
Up to the 5th harmonic |
|
-87 |
-80 |
dB |
|
|
|||||||
|
|
|
|
|
|
|
|
Spurious-Free Dynamic Range |
SFDR |
|
|
81 |
|
|
dB |
|
|
|
|
|
|
|
|
Channel-to-Channel Crosstalk |
|
4kHz, VIN = ±5V (Note 3) |
|
-86 |
|
dB |
|
|
|
|
|
|
|
||
|
DC, VIN = ±16.5V |
|
-96 |
|
|||
|
|
|
|
|
|||
Aperture Delay |
|
|
|
|
200 |
|
ns |
|
|
|
|
|
|
|
|
Aperture Jitter |
|
|
|
|
10 |
|
ns |
|
|
|
|
|
|
|
|
2 _______________________________________________________________________________________
Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +5V ±5%; unipolar/bipolar range; external reference mode, VREF = 4.096V; 4.7µF at REF pin; external clock, fCLK = 400kHz; TA = TMIN to TMAX; unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER |
SYMBOL |
|
CONDITIONS |
|
MIN |
TYP |
MAX |
UNITS |
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ANALOG INPUT |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Track/Hold Acquisition Time |
|
|
|
|
|
|
|
|
|
|
3 |
|
µs |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
±10V or ±VREF range |
|
|
5 |
|
|
|
||
Small-Signal Bandwidth |
|
|
|
-3dB |
±5V or ±VREF/2 range |
|
|
2.5 |
|
|
MHz |
||
|
|
|
rolloff |
0 to 10V or 0 to VREF range |
|
|
2.5 |
|
|
||||
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
0 to 5V or 0 to VREF/2 range |
|
|
1.25 |
|
|
|
||
|
|
|
|
|
MAX127 |
|
0 |
|
10 |
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
Unipolar, |
|
|
|
|
0 |
|
5 |
|
|
|
|
|
|
Table 3 |
MAX128 |
|
0 |
|
VREF |
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|||
Input Voltage Range |
|
VIN |
|
|
0 |
|
VREF/2 |
|
V |
||||
|
|
|
|
|
|
|
|
||||||
|
|
MAX127 |
|
|
-10 |
|
10 |
|
|||||
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
Bipolar, |
|
|
|
|
-5 |
|
5 |
|
|
|
|
|
|
Table 3 |
MAX128 |
|
|
-VREF |
|
VREF |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
-VREF/2 |
|
VREF/2 |
|
|
|||
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
MAX127 |
0 to 10V range |
|
-10 |
|
720 |
|
|
|
|
|
|
|
Unipolar |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0 to 5V range |
|
-10 |
|
360 |
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
MAX128 |
|
|
-10 |
0.1 |
10 |
|
|
|
Input Current |
|
IIN |
|
|
|
|
|
|
|
|
|
µA |
|
|
|
MAX127 |
±10V range |
|
-1200 |
|
720 |
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Bipolar |
|
±5V range |
-600 |
|
360 |
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
MAX128 |
±VREF range |
|
-1200 |
|
10 |
|
|
||
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
±VREF/2 range |
|
-600 |
|
10 |
|
|
||
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Input Resistance |
|
VIN |
|
Unipolar |
|
|
|
|
|
21 |
|
|
kΩ |
|
IIN |
|
|
|
|
|
|
|
|
|
|||
|
|
Bipolar |
|
|
|
|
|
16 |
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Input Capacitance |
|
|
|
(Note 4) |
|
|
|
|
|
|
40 |
|
pF |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
INTERNAL REFERENCE |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
REFOUT Voltage |
|
VREF |
TA = +25°C |
|
4.076 |
4.096 |
4.116 |
|
V |
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
REFOUT Tempco |
TC VREF |
MAX127_C/MAX128_C |
|
|
±15 |
|
|
ppm/°C |
|||||
|
|
|
|
|
|
|
|
|
|||||
MAX127_E/MAX128_E |
|
|
±30 |
|
|
||||||||
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Output Short-Circuit Current |
|
|
|
|
|
|
|
|
|
|
30 |
|
mA |
|
|
|
|
|
|
|
|
|
|
|
|
||
Load Regulation (Note 5) |
|
|
|
0 to 0.5mA output current |
|
|
|
10 |
|
mV |
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Capacitive Bypass at REF |
|
|
|
|
|
|
|
4.7 |
|
|
|
µF |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
REFADJ Output Voltage |
|
|
|
|
|
|
|
|
2.465 |
2.500 |
2.535 |
|
V |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
REFADJ Adjustment Range |
|
|
|
Figure 12 |
|
|
|
|
|
±1.5 |
|
|
% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Buffer Voltage Gain |
|
|
|
|
|
|
|
|
|
1.638 |
|
|
V/V |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
MAX127/MAX128
_______________________________________________________________________________________ 3
MAX127/MAX128
Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +5V ±5%; unipolar/bipolar range; external reference mode, VREF = 4.096V; 4.7µF at REF pin; external clock, fCLK = 400kHz; TA = TMIN to TMAX; unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER |
SYMBOL |
CONDITIONS |
MIN |
TYP |
MAX |
UNITS |
|
|
|
|
|
|
|
REFERENCE INPUT (buffer disabled, reference input applied to REF)
Input Voltage Range |
|
|
|
|
2.4 |
|
4.18 |
V |
|
|
|
|
|
|
|
|
|
|
|
VREF = |
Normal, or STANDBY |
|
|
400 |
|
|
Input Current |
|
power-down mode |
|
|
µA |
|||
|
4.18V |
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
FULL power-down mode |
|
|
1 |
|
||
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
Input Resistance |
|
Normal or STANDBY power-down mode |
10 |
|
|
kΩ |
||
|
|
|
|
|
|
|
|
|
|
FULL power-down mode |
|
5 |
|
|
MΩ |
||
|
|
|
|
|||||
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
REFADJ Threshold for |
|
|
|
|
VDD - 0.5 |
|
|
V |
Buffer Disable |
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
POWER REQUIREMENTS |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Supply Voltage |
VDD |
|
|
|
4.75 |
|
5.25 |
V |
|
|
|
|
|
|
|
|
|
|
|
Normal mode, bipolar ranges |
|
|
18 |
mA |
||
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
Supply Current |
IDD |
Normal mode, unipolar ranges |
|
6 |
10 |
|||
|
|
|||||||
|
|
|
|
|
|
|
||
STANDBY power-down mode (Note 6) |
|
700 |
850 |
µA |
||||
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
FULL power-down mode |
|
|
120 |
220 |
||
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
Power-Supply Rejection Ratio |
PSRR |
External reference = 4.096V |
|
±0.1 |
±0.5 |
LSB |
||
(Note 7) |
Internal reference |
|
|
±0.5 |
|
|||
|
|
|
||||||
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
TIMING |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
External Clock Frequency Range |
fCLK |
|
|
|
|
|
0.4 |
MHz |
|
|
|
|
|
|
|
|
|
Conversion Time |
tCONV |
|
|
|
6.0 |
7.7 |
10.0 |
µs |
|
|
|
|
|
|
|
|
|
Throughput Rate |
|
|
|
|
|
|
8 |
ksps |
|
|
|
|
|
|
|
|
|
Bandgap Reference |
|
Power-up (Note 8) |
|
|
200 |
|
µs |
|
Start-Up Time |
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Reference Buffer Settling Time |
|
To 0.1mV, REF bypass |
CREF = 4.7µF |
|
8 |
|
ms |
|
|
capacitor fully discharged |
CREF = 33µF |
|
60 |
|
|||
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
DIGITAL INPUTS (SHDN, A2, A1, |
A0) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Input High Threshold Voltage |
VIH |
|
|
|
|
|
2.4 |
V |
|
|
|
|
|
|
|
|
|
Input Low Threshold Voltage |
VIL |
|
|
|
0.8 |
|
|
V |
|
|
|
|
|
|
|
|
|
Input Leakage Current |
IIN |
VIN = 0 or VDD |
|
|
±0.1 |
±10 |
µA |
|
|
|
|
|
|
|
|
|
|
Input Capacitance |
CIN |
(Note 4) |
|
|
|
|
15 |
pF |
|
|
|
|
|
|
|
|
|
Input Hysteresis |
VHYS |
|
|
|
|
0.2 |
|
V |
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
4 _______________________________________________________________________________________
Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +5V ±5%; unipolar/bipolar range; external reference mode, VREF = 4.096V; 4.7µF at REF pin; external clock, fCLK = 400kHz; TA = TMIN to TMAX; unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER |
SYMBOL |
CONDITIONS |
MIN |
TYP |
MAX |
UNITS |
|
|
|
|
|
|
|
DIGITAL INPUTS (SDA, SCL) |
|
|
|
|
|
|
|
|
|
|
|
|
|
Input High Threshold Voltage |
VIH |
|
|
|
0.7 x VDD |
V |
Input Low Threshold Voltage |
VIL |
|
0.3 x VDD |
|
|
V |
|
|
|
|
|
|
|
Input Hysteresis |
VHYS |
|
0.05 x VDD |
|
|
V |
Input Leakage Current |
IIN |
VIN = 0 or VDD |
|
±0.1 |
±10 |
µA |
Input Capacitance |
CIN |
(Note 4) |
|
|
15 |
pF |
|
|
|
|
|
|
|
DIGITAL OUTPUTS (SDA) |
|
|
|
|
|
|
|
|
|
|
|
|
|
Output Low Voltage |
VOL |
ISINK = 3mA |
|
|
0.4 |
V |
|
|
|
|
|||
ISINK = 6mA |
|
|
0.6 |
|||
|
|
|
|
|
||
|
|
|
|
|
|
|
Three-State Output Capacitance |
COUT |
(Note 4) |
|
|
15 |
pF |
|
|
|
|
|
|
|
TIMING CHARACTERISTICS
(VDD = +4.75V to +5.25V; unipolar/bipolar range; external reference mode, VREF = 4.096V; 4.7µF at REF pin; TA = TMIN to TMAX; unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETERS |
|
SYMBOL |
CONDITIONS |
MIN |
TYP |
MAX |
UNITS |
|
|
|
|
|
|
|
|
22-WIRE- FASTMODE |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
SCL Clock Frequency |
|
fSCL |
|
|
|
400 |
kHz |
|
|
|
|
|
|
|
|
Bus Free Time Between a |
|
tBUF |
|
1.3 |
|
|
µs |
STOP and START Condition |
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Hold Time (Repeated) |
|
|
|
|
|
|
|
tHD,STA |
|
0.6 |
|
|
µs |
||
START Condition |
|
|
|
||||
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
Low Period of the SCL Clock |
|
tLOW |
|
1.3 |
|
|
µs |
|
|
|
|
|
|
|
|
High Period of the SCL Clock |
|
tHIGH |
|
0.6 |
|
|
µs |
|
|
|
|
|
|
|
|
Set-Up Time for a Repeated |
|
|
|
|
|
|
|
tSU,STA |
|
0.6 |
|
|
µs |
||
START Condition |
|
|
|
||||
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
Data Hold Time |
|
tHD,DAT |
|
0 |
|
0.9 |
µs |
|
|
|
|
|
|
|
|
Data Setup Time |
|
tSU,DAT |
|
100 |
|
|
ns |
|
|
|
|
|
|
|
|
Rise Time for Both SDA and SCL |
|
|
20 + |
|
300 |
|
|
tR |
Cb = Total capacitance of one bus line in pF |
|
ns |
||||
Signals (Receiving) |
0.1 x Cb |
|
|
||||
|
|
|
|
|
|||
Fall Time for Both SDA and SCL |
|
tF |
Cb = Total capacitance of one bus line in pF |
20 + |
|
300 |
ns |
Signals (Receiving) |
|
0.1 x Cb |
|
|
|||
|
|
|
|
|
|
||
Fall Time for Both SDA and SCL |
|
tF |
Cb = Total capacitance of one bus line in pF |
20 + |
|
250 |
ns |
Signals (Transmitting) |
|
0.1 x Cb |
|
|
|||
|
|
|
|
|
|
||
Set-Up Time for STOP Condition |
|
tSU,STO |
|
0.6 |
|
|
µs |
|
|
|
|
|
|
|
|
Capacitive Load for Each |
|
Cb |
|
|
|
400 |
pF |
Bus Line |
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Pulse Width of Spike Suppressed |
|
tSP |
|
0 |
|
50 |
ns |
|
|
|
|
|
|
|
|
MAX127/MAX128
_______________________________________________________________________________________ 5