AIC1660 Analog Intergrations Corporation, AIC1660 Datasheet

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AIC1660

Manufacturer Part Number
AIC1660
Description
Manufacturer
Analog Intergrations Corporation
Datasheet

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Analog Integrations Corporation
DS-1660T-P4
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FEATURES
APPLICATIONS
TYPICAL APPLICATION CIRCUIT
10 F
Lowest Output Impedance (Typical 35
V
Improved Direct Replacement for 7660.
1.5V to 6V Operation.
No External Diode Required.
Simple Conversion of +5V to -5V.
Low Quiescent Current (Typical 36 A at V
High Power Efficiency (Typical 98%)
Boost Pin for Higher Switching Frequency.
Improved SCR Latchup Protection.
RS-232 Power Supplies.
Handheld Instruments.
Data Acquisition Systems.
Supply Splitter, V
Operational Amplifier Supplies.
Panel Meter.
C1
IN
=5V).
+
Oct. 4, 01
Negative Voltage Converter
1
2
3
4
AIC1660
OUT
= V
V
IN
IN
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
TEL: 886-3-5772500
(1.5V to 6V)
8
/2.
6
7
5
+
Required for
V
IN
10 F
C2
V
OUT
3V
Switched-Capacitor Voltage Converter
=-V
IN
IN
=5V).
FAX: 886-3-5772510
at
n
DESCRIPTION
The AIC1660 is a monolithic CMOS switched
capacitor voltage converter. Designed to be an
improved direct replacement for the popular 7660
and LTC1044, the main function of the AIC1660 is
to convert a positive input voltage in the range of
1.5V to 6V to the corresponding negative output
voltage in the range of -1.5V to -6V. The input
voltage can also be doubled (V
divided (V
The chip contains a series DC power supply
regulator, oscillator, control circuitry and four
output power MOS switches. The frequency of
oscillator can be lowered by the addition of an
external capacitor to the OSC pin, or the oscillator
may be over-driven by an external clock.
The boost function is available to raise the
oscillator frequency to optimize performance in
specific applications. The “LV” terminal may be
tied to GND to improve low input voltage (V
larger than 3V to improve power dissipation.
The AIC1660 provides performance superior to
previous designs by combining low output
impedance, low quiescent current with high
efficiency, and by eliminating diode drop voltage
losses. The only required external components
are two low cost electrolytic capacitors.
nV
3V) operation, or be left floating for input voltage
IN
), as shown in application examples.
OUT
= V
IN
/2 ), or multiplied (V
www.analog.com.tw
AIC1660
OUT
= 2V
OUT
IN
1
IN
),
=

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AIC1660 Summary of contents

Page 1

... The AIC1660 is a monolithic CMOS switched capacitor voltage converter. Designed improved direct replacement for the popular 7660 and LTC1044, the main function of the AIC1660 is to convert a positive input voltage in the range of 1. the corresponding negative output voltage in the range of -1.5V to -6V. The input ...

Page 2

... ORDERING INFORMATION AIC1660 CX PACKAGE TYPE N: PLASTIC DIP S: SMALL OUTLINE n ABSOLUTE MAXIMUM RATINGS Supply Voltage .............… … … … … … ............… … … … … … … … ....................................................... 6.0V Input Voltage on Pin 1, 6 and 7 ...… … … … … ..........................… … … … … … … ............. -0.3V ~V Operating Temperature Range ........… ...

Page 3

... C, OSC=free running, A SYMBOL MIN TYP MAX 1.5 INL V INH R 35 OUT F OSC EFF V 98 99.9 OUTEFF (T = Load Current (mA) Fig. 2 Power Efficiency vs. Load Current AIC1660 UNIT KHz % % ...

Page 4

... OSC (Continued Load Current (mA) Fig. 4 Power Efficiency vs. Load Current ( PIN 1 PIN 1=OPEN 100 External Capacitor (Pin 7 to GND), C Fig. 6 Oscillator Frequency vs Value of C AIC1660 =2V) IN 1000 10000 (pF) OSC OSC 4 ...

Page 5

... PIN 5: VOUT - Negative output voltage, typically connected capacitor. Voltage Level ÷ 2 Converter PIN PIN 7: OSC PIN 8: VIN AIC1660 VIN CAP+ VOUT CAP- Substrate Logic Network - below 3V, LV should be IN tied to GND. For V larger than IN 3V, LV can be floating ...

Page 6

... To achieve the 0.002% accuracy as indicated, AIC1660 the load current should be kept below 100nA However, with a slight loss in accuracy, the load 4 5 current can be increased. Required for AIC1660 3V, or may be “floated“ for doubling is achieved 470K >3V by simply resistor is 6 ...

Page 7

... Output Common Battery Splitter common need in many systems is to obtain (+) - and ( ) supplies from a single battery or power supply system. Where current requirements are low, the circuit shown in Fig simple solution. SYMBOL MIN A 1.35 A1 0.10 B 0.33 C 0.19 D 4.80 E 3.80 e 1.27(TYP) H 5.80 L 0.40 AIC1660 MAX 1.75 0.25 0.51 0.25 5.00 4.00 6.20 1.27 7 ...

Page 8

... LEAD PLASTIC DIP (unit: mm SYMBOL MIN MAX A1 0.381 A2 2.92 b 0.35 C 0.20 D 9.01 10.16 E 7.62 E1 6.09 e 2.54 (TYP) eB — 10.92 L 2.92 AIC1660 — 4.96 0.56 0.36 8.26 7.12 3.81 8 ...

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