SPX385-1.2 Sipexoration, SPX385-1.2 Datasheet

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SPX385-1.2

Manufacturer Part Number
SPX385-1.2
Description
Micropower Voltage Reference
Manufacturer
Sipexoration
Datasheet
FEATURES
APPLICATIONS
The SPX385-1.2 is a micropower 2-terminal band-gap voltage reference with a very wide
operating current range from 10µA to 20mA that provides a stable voltage. The high stability of
this device is primarily the result of the low temperature coefficient Thin Film Resistor process and
Laser Trimming of the output voltage at the wafer level.
The SPX385-1.2 is available in a TO-92, SOIC-8 and SOT-89 package with an operating
temperature range of -40°C to 85°C. A 2.5 and 5.0 volt devices are also available - SPX385-2.5,
SPX385-5.0.
Date: 5/25/04
Figure 1: Block Diagram
Low Output Voltage ................................ 1.235V
Dynamic Impedance...............................1Ω max
Low Temperature Coefficient........30ppm/°C (typ)
Operating Current ........................ 10µA to 20mA
Extended Temperature Range .. -40°C to +85°C
Initial Tolerance..................................1% and 2%
Pin Compatible with LM185/285/385, 1.23V
Portable Meter Reference
Portable Test Instruments
Battery Operated Systems
Panel Meters
®
SPX385-1.2 Micropower Voltage Reference
1.235V
Cathode (K)
Anode (A)
Micropower Voltage Reference
+
-
1
CATHODE
Now Available in Lead Free Packaging
N/C
N/C
N/C
1
2
3
4
SPX385-1.2
8 Pin nSOIC
SPX385-1.2
© Copyright 2004 Sipex Corporation
BLOCK DIAGRAM
DESCRIPTION
8
7
6
5
ANODE
N/C
N/C
N/C

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SPX385-1.2 Summary of contents

Page 1

... Thin Film Resistor process and Laser Trimming of the output voltage at the wafer level. The SPX385-1.2 is available in a TO-92, SOIC-8 and SOT-89 package with an operating temperature range of -40°C to 85°C. A 2.5 and 5.0 volt devices are also available - SPX385-2.5, SPX385-5 ...

Page 2

... CALCULATING AVERAGE TEMPERATURE COEFFICIENT (TC) ∆V KA ∆ 105 Junction Temperature (°C) 0.033 mV/°C 0.0027 %/°C 27 ppm/C SPX385-1.2 Micropower Voltage Reference TYPICAL JA JA DERATING 160°C/W 80°C/W 6.3 mW/°C 175°C/W 45°C/W 5.7mW/°C 110°C/W 8°C/W 9.1mW/°C SPX385-1 ...

Page 3

... Figure 4. High Current Operating Characteristics -1.0 90 120 Figure 6. Low Current Operating Characteristics SPX385-1.2 = 1.23V * I OUT C1 150pF 6 R2 1.5V to 27V Figure 7b. Precision 1µA to 1mA Current Source SPX385-1.2 Micropower Voltage Reference 1. Cathode Voltage (V) KA Temperature Range: 0°C to 85°C 85 °C 25 °C -0 °C -0.5 0 0.5 1.0 1 ...

Page 4

... Figure 8. Reference from 1.5V Battery V = 2.3V to 30V IN LM334 4.3k SPX385-1.2 Figure 10. Wide Input Range Reference Date: 5/25/04 TYPICAL PERFORMANCE CHARACTERISTICS Figure 9. Micropower Reference from 9V Battery 1M OUT 1.2V SPX385-1.2 Figure 11: Precision Micropower 10V Reference SPX385-1.2 Micropower Voltage Reference 4 9V 500k 1.2V SPX385-1 15V 10V ...

Page 5

... Date: 5/25/ E1/2 b Ø1 Seating Plane Ø1 SEATING PLANE WITH PLATING 1.75 0.25 1.65 0.51 0.25 1.27 8º 15º SPX385-1.2 Micropower Voltage Reference 5 PACKAGE: 8 PIN NSOIC SEE VIEW C Gauge Plane L2 Ø VIEW BASE METAL CONTACT AREA 8 PIN NSOIC © Copyright 2004 Sipex Corporation ...

Page 6

... W b DIMENSIONS 3 PIN TO-92 CARSEM DWG # Minimum/Maximum TLG920001 COMMON HEIGHT DIMENSION SYMBOL MIN NOM MAX A 4.32 b 0.36 3. 1.14 L 12.70 2. 0.41 D 4.45 4º ∂ Date: 5/25/04 L (mm 4.95 - 0.51 - 3.94 - 2.67 - 1.40 - 15. 2.41 1. 0.56 - 4.95 - 6º SPX385-1.2 Micropower Voltage Reference 6 PACKAGE: 3 PIN TO- ∂(2x) 3 PIN TO-92 © Copyright 2004 Sipex Corporation ...

Page 7

... Ø1 PIN SOT-89 Dimensions in (mm) LINGSEN # PO-SOT-004 MIN A 1.40 b 0.36 0.41 b1 0. 1.40 2. 1.45 2.90 e1 3.94 H 0.80 L Date: 5/25/ 5’(2x) NOM MAX 1.50 1.60 B’(2x) 0.42 0.48 0.47 0.53 0.40 0.43 4.50 4.60 1.60 1.75 2.50 2.60 1.50 1.55 b 3.00 3.10 - 4.25 - 1.20 SPX385-1.2 Micropower Voltage Reference 7 PACKAGE: 3 PIN SOT-89 C RO. PIN SOT-89 © Copyright 2004 Sipex Corporation ...

Page 8

... Sipex Corporation Headquarters and Sales Office: 233 Hillview Dr Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 SPX385-1.2 Micropower Voltage Reference 8 PINOUTS TO-92 ( ANODE N/C CATHODE Bottom View ORDERING INFORMATION Package Type 3-Pin SOT-89 3-Pin SOT-89 8-Pin NSOIC ...

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