MAX6629MUT#TG16 ,12-Bit + Sign Digital Temperature Sensors with Serial InterfaceElectrical Characteristics(V = +3.0V to +5.5V, T = -55°C to +125°C, unless otherwise noted. Typical ..
MAX662ACPA ,+12V / 30mA Flash Memory Programming SupplyELECTRICAL CHARACTERISTICS(Circuit of Figure 3a, V = 4.5V to 5.5V, T = T to T , unless otherwise no ..
MAX662ACPA ,+12V / 30mA Flash Memory Programming SupplyPin DescriptionVCCC44.7μFVPIN NAME FUNCTION CCNegative terminal for the first charge-1 C1-S1pump ca ..
MAX662ACPA ,+12V / 30mA Flash Memory Programming SupplyGeneral Description ________
MAX662ACPA+ ,12V, 30mA Flash Memory Programming SupplyELECTRICAL CHARACTERISTICS(Circuit of Figure 3a, V = 4.5V to 5.5V, T = T to T , unless otherwise no ..
MAX662ACSA ,+12V / 30mA Flash Memory Programming SupplyMAX662A19-0253; Rev 1; 8/94+12V, 30mA Flash MemoryProgramming Supply_______________
MB3614 ,QUAD OPERATIONAL AMPLIFIERFUJITSU SEMICONDUCTORDS04-11107-3EDATA SHEETLINEAR ICQUAD OPERATIONAL AMPLIFIERMB3614QUAD OPERATION ..
MB3614P ,Quad operational amplifierelectrical characteristics of current industrial standard operational am-DIP-14P-M02plifier and req ..
MB3614P ,Quad operational amplifierFUJITSU SEMICONDUCTORDS04-11107-3EDATA SHEETLINEAR ICQUAD OPERATIONAL AMPLIFIERMB3614QUAD OPERATION ..
MB3614PF ,Quad operational amplifierFUJITSU SEMICONDUCTORDS04-11107-3EDATA SHEETLINEAR ICQUAD OPERATIONAL AMPLIFIERMB3614QUAD OPERATION ..
MB3615 ,QUAD OPERATIONAL AMPLIFIERFUJITSU SEMICONDUCTORDS04-11108-3EDATA SHEETASSPQUAD OPERATIONAL AMPLIFIERMB3615QUAD OPERATIONAL AM ..
MB3730A ,14W BTL Audio Power Amplifierjlililliggigllgglglll
FUJITSU 14 w BTL AUDIO MB3730A
lllllllillllllllllllllllllll JimlilltR] AM ..
MAX6629MUT#TG16-MAX6630MTT+T-MAX6630MUT#TG16-MAX6630MUT#TGF6
12-Bit + Sign Digital Temperature Sensors with Serial Interface
General DescriptionThe MAX6629–MAX6632 are local digital temperature
sensors with an SPI-compatible serial interface. The
temperature is converted to a 12-bit + sign word with a
resolution of 0.0625°C/LSB. An extended temperature
range provides useful readings up to +150°C.
These sensors are 3-wire serial interface SPI compatible,
allowing the MAX6629–MAX6632 to be readily connected to a variety of microcontrollers (μCs). The MAX6629–
MAX6632 are read-only devices, simplifying their use in
systems where only temperature data is required.
All four digital temperature sensors require very little
supply current, making them ideal for portable systems.
The MAX6631/MAX6632 perform a temperature-to-digital
conversion once every 8s and require minimal average supply current, 32μA (typ). The MAX6629/MAX6630
perform a conversion once every 0.5s and require only 200μA (typ) supply current. Any of these temperature
sensors can perform conversions more often—up to
approximately four conversions per second by reading the
conversion results more often.
Applications
Features●Low Power Consumption • 32μA typ (MAX6631/MAX6632) • 200μA typ (MAX6629/MAX6630)●12-Bit + Sign Resolution with 0.0625°C/LSB●Accuracy • ±1°C (max) from 0°C to +70°C●+150°C Extended Temperature Range●SPI-Compatible Serial Interface●+3.0V to +5.5V Supply Range●6-Pin TDFN and SOT23 Packages●Lead-Free Version Available (TDFN Package)●Cellular●Hard Disk Drive●HVACs●Industrial Control●Systems
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
PARTTEMP RANGEPIN-PACKAGE
MAX6629MTT+-55°C to +125°C6 TDFN-EP*
MAX6629MUT-55°C to +125°C6 SOT23-6
MAX6630MTT+-55°C to +125°C6 TDFN-EP*
MAX6630MUT-55°C to +125°C6 SOT23-6
MAX6631MTT+-55°C to +125°C6 TDFN-EP*
MAX6631MUT-55°C to +125°C6 SOT23-6
MAX6632MTT+-55°C to +125°C6 TDFN-EP*
MAX6632MUT-55°C to +125°C6 SOT23-6
GND
SCKVCC6SO
N.C.
MAX6629
MAX6631
SOT23
TDFNTOP VIEW4N.C.
SCKVCC6SO
GND
MAX6630
MAX6632
SOT23
TDFN4
VCC
SO
GND
SCK
+3V TO +5.5V
0.1µF
MAX6629
MAX6630
MAX6631
MAX6632 CS
MAX6629–MAX663212-Bit + Sign Digital Temperature Sensors
with Serial Interface
Ordering Information
Typical Application Circuit
Pin Conigurations
All voltages referenced to GND.
VCC...........................................................................-0.3V, +6.0V
SO, SCK, CS....................................................-0.3V, VCC + 0.3V
SO .......................................................................-1mA to +50mA
Current into Any Pin ............................................................10mA
Continuous Power Dissipation (TA = +70°C) 6-Pin SOT23 (derate 9.10mW/°C above +70°C).........727mW 6-Pin TDFN (derate 24.4mW/°C above +70°C).........1951mW
Junction Temperature......................................................+150°COperating Temperature Range (Note 1)...........-55°C to +150°C
Storage Temperature Range.............................-65°C to +150°CLead Temperature (soldering, 10s).................................+300°CSoldering Temperature (reflow)
TDFN............................................................................+260°C SOT23 (Ordering Information contains “#”).................+245°C SOT23 (Ordering Information contains “-”)..................+240°C
(VCC = +3.0V to +5.5V, TA = -55°C to +125°C, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25°C.) (Notes 2 and 3)
Note 1: It is not recommended to operate the device above +125°C for extended periods of time.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
TEMPERATUREAccuracy
TA = room temp, VCC = +3.3V-0.8±0.2+0.8
0°C ≤ TA ≤ +70°C, VCC = +3.3V-1.0±0.2+1.0
-20°C ≤ TA ≤ +85°C, VCC = +3.3V-1.6+0.3+1.6
-20°C ≤ TA ≤ +100°C, VCC = +3.3V-2.3+0.5+2.3°C
-40°C ≤ TA ≤ +125°C, VCC = +3.3V-3.2+0.8+3.2
TA ≥ -55°C, VCC = +3.3V-1.0+1.5+3.5
TA = +150°C, VCC = +3.3V-5.0+1.5+6.5
Power-Supply SensitivityPSS0.20.6°C/V
Resolution0.0625°C
Time Between Conversion
StartstSAMPLEMAX6629, MAX6630, CS high0.370.50.65sMAX6631, MAX6632, CS high5.9810.5
Conversion TimetCONV180250320ms
POWER SUPPLYSupply Voltage RangeVCC3.05.5V
Supply Current, SCK Idle
ISDShutdown (Note 3), VCC = +0.8V5IIDLEADC idle (Figure 2), CS = low620
ICONVADC converting (Figure 2)360650
Average Operating Current ICCMAX6629, MAX6630200400µA
MAX6631, MAX66323250
Power-On Reset (POR)
ThresholdVCC falling 1.6V
MAX6629–MAX663212-Bit + Sign Digital Temperature Sensors
with Serial Interface
Absolute Maximum RatingsStresses 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
(VCC = +3.0V to +5.5V, TA = -55°C to +125°C, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25°C.) (Notes 2 and 3)
Note 2: Tested at a single temperature. Specifications over temperature are guaranteed by design.
Note 3: The MAX6629–MAX6632 are not specifically equipped with a shutdown function. Their low supply current permits powering
them from the output of a logic gate. This specification is given to ensure that the MAX6629–MAX6632 do not draw exces-
sive currents at low supply voltages, ensuring reliable operation from a gate output.
Note 4: Timing characteristics are guaranteed by design and are not production tested.
Note 5: CLOAD = total capacitance of one bus line in picofarads.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
LOGIC INPUTS (CS, SCK)Logic Input Low VoltageVIL0.3 x
VCCV
Logic Input High VoltageVIH0.7 x
VCCV
Input Leakage CurrentILEAKVIN = VGND or +5.5V±1±5 µA
LOGIC OUTPUTS (SO)Output Low VoltageVOLISINK = 1.6mA0.4V
Output High VoltageVOHISOURCE = 1.6mAVCC - 0.4V
TIMING CHARACTERISTICS (Notes 4 and 5)Serial Clock FrequencyfSCL5MHz
SCK Pulse Width HightCH100ns
SCK Pulse Width LowtCL100ns
CS Fall to SCK RisetCSSCLOAD = 10pF80ns
CS Fall to Output EnabletDVCLOAD = 10pF80ns
CS Rise to Output DisabletTRCLOAD = 10pF50ns
SCK Fall to Output Data ValidtDOCLOAD = 10pF80ns
MAX6629–MAX663212-Bit + Sign Digital Temperature Sensors
with Serial Interface
Electrical Characteristics (continued)
(VCC = +3.3V, TA = +25°C, unless otherwise noted.)
PIN
NAMEFUNCTIONMAX6629
MAX6631
MAX6630
MAX66322N.C.No Connect. Connect to ground plane for better thermal performance to the PC board.1GNDGround3VCC
Supply Voltage Input. Bypass VCC to GND with a 0.1µF capacitor. VCC can also be
powered from a logic output as long as the voltage level is greater than 3.0V and the logic
output is not noisy. Setting the logic output low provides a hardware shutdown mode.4SCKSerial Clock Input5CSChip-Select Input. Enables the interface. A rising edge off CS initiates the next conversion.
Pulling CS low initiates an idle state.6SOSerial Data Output
POWER-ON RESET (POR)
THRESHOLD vs.TEMPERATURE
MAX6629-32 toc02
TEMPERATURE (°C)
POWER-ON RESET THRESHOLD (V)
TEMPERATURE ERROR
vs. TEMPERATURE
MAX6629-32 toc03
TEMPERATURE (°C)
TEMPERATURE ERROR (∞C)
MAX6629100k10M1k10010k1M100M
TEMPERATURE ERROR
vs. POWER-SUPPLY NOISE FREQUENCYMAX6629-32 toc04
FREQUENCY (Hz)
TEMPERATURE ERROR (°C)VIN = SQUARE WAVE
APPLIED TO VCC WITH NO
0.1µF CAPACITOR
VIN = 250mVP-P
RESPONSE TO THERMAL SHOCK
MAX6629-32 toc05
TIME (s)
TEMPERATURE (°C)
OPERATING SUPPLY CURRENT
vs. TEMPERATURE
MAX6629-32 toc01
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
MAX6629
VCC = +5.5VVCC = +4.5VVCC = +5.0V
VCC = +3.0V
VCC = +3.3V
VCC = +3.6V
MAX6629–MAX663212-Bit + Sign Digital Temperature Sensors
with Serial Interface
Typical Operating Characteristics
Pin Description
Detailed DescriptionThe MAX6629–MAX6632 are local digital temperature
sensors with a serial bus. The MAX6629–MAX6632 are typically interfaced to a μC in temperature sensing and
control applications. The MAX6629–MAX6632 convert
temperature to a 12-bit + sign word with a 0.0625°C LSB.
The data is communicated through a simple serial inter-
face with a CS (chip select) line, SO (data) line, and SCK (clock) line. This interface can be directly connected to,
and is fully compatible with, SPI interfaces. This interface
can also be connected to virtually any processor, which has at least three general-purpose input/output (GPIO)
lines available to implement software “bit banging.”
The high resolution of the MAX6629–MAX6632 makes
them especially useful in thermal control loops, HVAC
systems, or in any system where quick anticipation of
temperature trends is useful. The MAX6629–MAX6632
can produce temperature data in excess of +150°C,
although they are specified for a maximum operating
temperature of +150°C. The low power consumption is
also ideal in battery-operated and portable applications.
The MAX6631/MAX6632 are optimized for minimum
power consumption with their 8s conversions. The
MAX6629/MAX6630 provide faster conversions, 0.5s, at
the expense of power consumption. The low quiescent
supply current enables the device to be powered from
a logic line or the output of a gate where the high level
exceeds 3V, as shown in Figure 1. While the MAX6629–
MAX6632 are not specifically equipped with a software
shutdown mode, the hardware shutdown can easily be
implemented by setting the gate output to low. Pulling
CS low without a clock also puts the device in idle mode.
Take care to ensure that the logic output is not noisy, as
excessive noise on VCC can affect temperature measure-
ment accuracy.
ADC Conversion SequenceThe MAX6629–MAX6632 continuously convert tempera-
ture to digital data. Setting CS low stops any conversion
in progress, places the device in idle mode, and makes
data available for reading. Setting CS high starts a new
conversion. CS must remain high for at least 0.3s to allow
for the conversion to be completed. Figure 2 shows the
timing relationship between conversion time and conver-
sion rate.
SPI Digital InterfaceThe MAX6629–MAX6632 are compatible with SPI serial-interface standards (Figure 3) and are designed to be
read-only devices. CS’s rising edge always starts a new
conversion and resets the interface. CS must stay high
for a minimum of 300ms to allow the conversion to finish.
CS’s falling edge stops any conversion in progress, and
data is latched into the shift register. Then the data clocks
Figure 1. Powering the Sensor from a Logic Gate
LOGIC LINE WHERE VLOGIC > 3V
MAX6629
MAX6630
MAX6631
MAX6632VCC
SO
GND
SCK
CS
MAX6629
MAX6630
MAX6631
MAX66320.25s ADC
CONVERSION TIME
MAX6631
MAX6632CONVERSION PERIOD
MAX6629
MAX6630CONVERSION PERIOD
0.5s
0.25s ADC
CONVERSION TIME
MAX6629–MAX663212-Bit + Sign Digital Temperature Sensors
with Serial Interface
out at SO on SCK’s falling edge with the sign bit (D15)
first, followed by the MSB. Data is sent in one 16-bit word,
and CS must remain low until all 16 bits are transferred. If
CS goes high in the middle of a transmission, it is neces-sary to wait the conversion time (less than 300ms) before
attempting a new read. The serial data is composed of 12 + 1 data bits (D15–D3) and 3 trailing bits (D2–D0). D2 is
always low, serving as the confirmation bit that the device
has been communicated with. The last 2 bits, D0 and D1,
are undefined and are always in high-impedance mode (Table 1). The power-up state for SO is high impedance.
Figure 3 shows the detailed serial timing specifications
for the SPI port. The temperature data format is in two’s complement format (Table 2).
Power Shutdown ModeThe MAX6629–MAX6632 do not have a built-in power
software shutdown mode. However, a power shutdown
mode is easily implemented utilizing an unused logic
gate. A typical CMOS or TTL logic output has enough
drive capability to serve as the power source if its output
voltage level exceeds 3V, as shown in Figure 1. Drive the
logic output low to provide a hardware shutdown mode.
Idle ModeThe MAX6629–MAX6632 can be put into idle mode by
pulling CS low. Data can be clocked out when the device
is in idle mode.
Power-On Reset (POR)The POR supply voltage of the MAX6629–MAX6632 is
typically 1.6V. Below this supply voltage, the interface is
inactive and the data register is set to the POR state, 0°C.
When power is first applied and VCC rises above 1.6V (typ), the device starts to convert, although temperature
reading is not recommended at VCC levels below 3.0V.
Applications Information
Table 2. Temperature Data Format
(Two’s Complement)
Table 1. Data Output FormatFigure 3. SPI Timing Diagram
D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0SignMSB
Data
LSB
DataLowHigh-ZHigh-Z
TEMPERATURE
(°C)
DIGITAL OUTPUT (BINARY)
D15–D3D2D1, D01500,1001,0110,00000XX
1250,0111,1101,00000XX0,0001,1001,00000XX
0.06250,0000,0000,00010XX0,0000,0000,00000XX
-0.06251,1111,1111,11110XX
-251,1110,0111,00000XX
-551,1100,1001,00000XX
D15D0D1D2D3
SCK
tDV
tCSS
tDO
tTR
MAX6629–MAX663212-Bit + Sign Digital Temperature Sensors
with Serial Interface
