ADM660

PRODUCTION

CMOS Switched-Capacitor Voltage Converter

Data Sheet (Rev. C) Product Selection Table

Part Models: 7
1ku List Price: Starting From $2.46

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Overview

ADM660: Inverts or Doubles Input Supply Voltage
ADM8660: Inverts Input Supply Voltage
100 mA Output Current
Shutdown Function (ADM8660)
2.2 µF or 10 µF Capacitors
0.3 V Drop at 30 mA Load
+1.5 V to +7 V Supply

Low Power CMOS: 600 µA Quiescent Current
Selectable Charge Pump Frequency (25 kHz/120 kHz)
Pin Compatible Upgrade for MAX660, MAX665, ICL7660
Available in 16-Lead TSSOP Package

The ADM660 / ADM8660 is a charge-pump voltage converter that can be used to either invert the input supply voltage giving V_OUT = -V_IN or double it (ADM660 only) giving V_OUT = 2 x V_IN. Input voltages ranging from +1.5 V to +7 V can be inverted into a negative -1.5 V to -7 V output supply. This inverting scheme is ideal for generating a negative rail in single power supply systems. Only two small external capacitors are needed for the charge pump. Output currents up to 50 mA with greater than 90% efficiency are achievable, while 100 mA achieves greater than 80% efficiency.

A Frequency Control (FC) input pin is used to select either 25 kHz or 120 kHz charge-pump operation. This is used to optimize capacitor size and quiescent current. With 25 kHz selected, a 10 µF external capacitor is suitable, while with 120 kHz the capacitor may be reduced to 2.2 µF. The oscillator frequency on the ADM660 can also be controlled with an external capacitor connected to the OSC input or by driving this input with an external clock. In applications where a higher supply voltage is desired it is possible to use the ADM660 to double the input voltage. With input voltages from 2.5 V to 7 V, output voltages from 5 V to 14 V are achievable with up to 100 mA output current.

The ADM8660 features a low power shutdown (SD) pin instead of the external oscillator (OSC) pin. This can be used to disable the device and reduce the quiescent current to 300 nA.

APPLICATIONS

Handheld Instruments
Portable Computers
Remote Data Acquisition
Op Amp Power Supplies

Part Models: 7
1ku List Price: Starting From $2.46

Documentation

Data Sheet 1

ADM660/ADM8660: CMOS Switched-Capacitor Voltage Converters Data Sheet (Rev.C) 12/11/2002

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADM660ANZ	8-Lead PDIP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADM660ARU	16-Lead TSSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADM660ARU-REEL	16-Lead TSSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADM660ARUZ	16-Lead TSSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADM660ARZ	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADM660ARZ-REEL	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADM660ARZ-REEL7	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Aug 19, 2009 - 07_0024 Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad
		Material_Report Material_Report Parts List PCN07_0024_Form Qual Data
ADM660ANZ	PRODUCTION
Feb 3, 2009 - 08_0001 Qualification of 8" 3um BiCMOS wafer fab process at Analog Devices, Limerick, Ireland.
		Form Material_Report RQR04496B RQR04497E
ADM660ANZ	PRODUCTION
ADM660ARU	Obsolete
ADM660ARU-REEL	Obsolete
ADM660ARUZ	PRODUCTION
ADM660ARZ	PRODUCTION
ADM660ARZ-REEL	PRODUCTION
Feb 11, 2011 - 10_0005 Halogen Free Material Change for TSSOP Products Assembled at Amkor
		PCN10_0005_Form Material_Report Reliability Report
ADM660ARUZ	PRODUCTION	PCN10_0005_Form Material_Report Reliability Report

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Reference Designs

20-Bit, 1.8 MSPS, ±2.5 ppm INL, Low Drift, High Accuracy Data Acquisition Solution

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Features and Benefits

Data acquisition solution fully characterized over 0°C to 70°C
Guaranteed 20-bit no missing codes
INL: ±2 ppm, DNL: ±0.25 ppm
Throughput: 1.8 MSPS
Offset error drift: ±3.5 ppm/°C; gain error drift: ±6 ppm/°C
SNR: 98 dB at G = 1, 92 dB at G = 10, f_IN = 1 kHz
THD: −120 dB at G = 1, −116 dB at G = 10, f_IN = 1 kHz
Oversampled dynamic range: 102 dB at 900 kSPS, OSR = 2
Software programmable bipolar input ranges (±1 V to ±10 V)
- Allows single-ended and differential signals
CMRR: 92 dB typical
GΩ input impedance allows direct interface with sensors
Ease of use features reduce system power and complexity
ADC Input overvoltage clamp protection sinks up to 50 mA
On-board 5 V reference and buffer
First conversion accurate, no latency/pipeline delay
Fast conversion time allows low SPI clock rates
SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface