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Details, datasheet, quote on part number:SL30495
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Datasheet text preview:
LTC2053 SL30495 Precision, Rail-to-Rail, Zero-Drift Instrumentation Amplifier with Resistor-Programmable Gain
FEATURES
s s s s s s s s
DESCRIPTIO
MS8 Package Resistor Programmable Gain Rail-to-Rail Output Maximum Offset Voltage: 10µV Maximum Offset Voltage Drift: 50nV/°C Supply Operation: 2.7V to 5V Typical Noise: 2.5µVp-p (0.01Hz to 10Hz) Typical Supply Current: 0.8mA
The LTC®2053 SL30495 is a high precision instrumentation amplifier. It uses a charge balanced switched capacitor technique to convert a differential input voltage into a single ended signal that is in turn amplified by a zero-drift operational amplifier. The LTC2053 SL30495 is easy to use; the gain is adjustable with two external resistors, like a traditional op amp. T h e single-ended output swings from rail-to-rail. The LTC2053 SL30495 is used in 5V single supply applications.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
TEC Controllers
TYPICAL APPLICATIO
Detailed Schematic of TEC Temperature Controller Includes A1 Thermistor Bridge Amplifier, LTC1923 Switched Mode Controller and Power Output H-Bridge. DAC Establishes Temperature Setpoint. Gain Adjust and Compensation Capacitor Optimize Loop Gain Bandwidth. Various LTC1923 Outputs Permit Monitoring TEC Operating Conditions
0.1µF PLLLPF TO 2.5VREF AT LTC1923 10k 0.1% 3 + A1 10k LTC2053 2 #30495 82k RT 330pF L1, L2: SUMIDA CDRH8D28-100NC, 10µH Q1, Q2: Si9801DY N-P DUAL TEC-RTHERMISTOR ARE PART OF LASER MODULE. RTHERMISTOR IS TYPICALLY 10k AT 25°C. 10k LTC1923 CT RSLEW SDSYNC EAIN + 9k 0.1µF FILM 4.7µF* TANTALUM 100k LOOP BANDWIDTH 1µF CERAMIC 10k 0.1µF TO 2.5VREF 17.8k EAOUT 10M EAIN AGND SS I LIM CS
+
CLK DIN CS/LD
REFIN LTC1658
5V 7
VREF
1µF
2.5VREF
6 5 LOOP GAIN 1k*
PDRVB NDRVB VDD PGND PDRVA NDRVA Q1 0.1 TEC L1 L2 Q2 5V 1µF 5V
RT H E R M I S T O R
THERMAL FEEDBACK
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
+
0.1µF FILM
2.5VREF VS E T FAULT VT H E R M H/C VT E C
CS
ITEC TEC + TEC
U
* = SUGGESTED VALUES
U
U
+
22µF
22µF
22µF
2.2µF
2053 TA01
1
LTC2053 SL30495
ABSOLUTE
AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
TOP VIEW V IN + IN V 1 2 3 4 8 7 6 5 V+ OUT RG REF
Total Supply Voltage (V + to V ) ......... 6V Input Current ...... ±10mA Output Short Circuit Duration .. Indefinite Operating Temperature Range ....... 40°C to 85°C Storage Temperature Range ........ 65°C to 150°C Lead Temperature (Soldering, 10 sec)......... 300°C
ORDER PART NUMBER LTC2053CMS8#30495 MS8 PART MARKING LTMW
MS8 PACKAGE 8-LEAD PLASTIC MSOP TJMAX = 110°C, JA = 120°C/W
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. V + = 5V, V = 0V, REF = 2.5V.
PARAMETER Gain Error Gain Nonlinearity Input Offset Voltage Average Input Offset Drift Input Bias Current Input Offset Current Input Noise Voltage Output Voltage Swing High Output Voltage Swing Low Supply Current Internal Sampling Frequency Note 1: These parameters are guaranteed by design. Thermocouple effects preclude the measurements of these voltage levels during automated testing. No Load
q
ELECTRICAL CHARACTERISTICS
CONDITIONS AV = 1 AV = 1 VCM = 2.5V (Note 1) (Note 1) VCM = 1V VCM = 1V DC to 10Hz RL = 2k to V RL = 10k to V
MIN
q q
TYP 0.001 3
MAX 0.01 10 10 ± 50
UNITS % ppm µV nV/°C nA nA µVP-P V V
q q q
4 1 2.5 4.85 4.95 4.94 4.98 20 0.85 2.5 1.2
q q
2
U
mV mA kHz
W
U
U
WW
W
LTC2053 SL30495
PI FU CTIO S
V (Pins 1, 4): Negative Supply. Both pins must be connected to the negative supply for proper device operation. IN (Pin 2): Inverting Input. +IN (Pin 3): Noninverting Input. REF (Pin 5): Ground Reference for Output. RG (Pin 6): Inverting Input of Internal Op Amp. With a resistor, R2, connected between the OUT pin and the RG pin and a resistor, R1, between the RG pin and the REF pin, the DC gain is given by 1 + R2 / R1. OUT (Pin 7): Amplifier Output. V + (Pin 8): Positive Supply.
BLOCK DIAGRA
W
U
U
U
8 LTC2053 SL30495 + IN 3 IN 2 CS CH V+ ZERO-DRIFT OP AMP OUT 7
+
REF 5 6 RG 1
V 4
V
2053 BD
3
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