True Bipolar Input, Dual
1μs, 12-Bit, 2-Channel SAR ADC
AD7366
Preliminary Technical Data
FEATURES
Dual 12-bit, 2-channel ADC
True Bipolar Analog Inputs
Programmable Input Ranges
±10, ±±, 0 to 10 V
FUNCTIONAL BLOCK DIAGRAM
D
A
DV
AV
V
CAP
CC
CC
DD
BUF
REF
AD7366
Throughput rate: 1 MSPS
Simultaneous conversion with read in less than 1μs
Specified for VCC of ± V±±%
Low current consumption: ±.6± mA max
Wide input bandwidth
12-BIT
V
V
A1
A2
OUTPUT
DRIVERS
SUCCESSIVE
APPROXIMATION
ADC
D
A
OUT
T/H
MUX
SCLK
CONVST
CS
70 dB SNR at ±0 kHz input frequency
On-chip reference: 2.± V
–40°C to +8±°C operation
High speed serial interface
SPI®/QSPI™/MICROWIRE™/DSP compatible
iCMOSTM Process Technology
BUSY
CONTROL
LOGIC
ADDR
RANGE0
RANGE1
REFSEL
V
DRIVE
V
B1
12-BIT
SUCCESSIVE
APPROXIMATION
ADC
24-lead TSSOP package
For 14 bit version see AD7367
OUTPUT
DRIVERS
MUX
D
B
OUT
T/H
V
B2
GENERAL DESCRIPTION
BUF
The AD73661 is a dual, 12-bit, high speed, low power, successive
approximation ADC that features throughput rates up to 1
MSPS. The device contains two ADCs, each preceded by a 2-
channel multiplexer, and a low noise, wide bandwidth track-
and-hold amplifier that can handle input frequencies in excess
of 10 MHz.
AGND AGND
V
SS
D
B
DGND
CAP
Figure 1
Table 1.Related Products
Device
Resolution Throughput Number of
The AD7366 is fabricated on Analog Devices’ Industrial CMOS
process, iCMOS, a technology platform combining the
advantages of low and high voltage CMOS, bipolar and high
voltage DMOS processes. The process allows the AD7366 to
accept high voltage bipolar signals in addition to reducing
power consumption and package size. The AD7366 can accept
true bipolar analog input signals in the ±10 ꢀ range, ±± ꢀ range
and 0 to 10 ꢀ range.
Number
Rate
Channels
Dual, 2-ch
Dual, 2-ch
Dual, 2-ch
AD7367
14-Bit
12-Bit
14-Bit
1 MSPS
±00 KSPS
±00 KSPS
AD7366-±
AD7367-±
The AD7366 has an on-chip 2.± ꢀ reference that can be
overdriven if an external reference is preferred. The AD7366 is
available in a 24-lead TSSOP package.
iCMOSTM Process Technology
For analog systems designers within industrial/instrumentation equipment
OEMs who need high performance ICs at higher-voltage levels, iCMOS is a
technology platform that enables the development of analog ICs capable of
30V and operating at +/- 15V supplies while allowing dramatic reductions in
power consumption and package size, and increased AC and DC
performance.
1Protected by U.S. Patent No. 6,681,332.
Rev. PrG
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2006 Analog Devices, Inc. All rights reserved.
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