AD7366 Datasheet, PDF (1/17 Pages) Analog Devices – True Bipolar Input, Dual 1us, 12-Bit, 2-Channel SAR ADC

Preliminary Technical Data
FEATURES
Dual 12-bit, 2-channel ADC
True Bipolar Analog Inputs
Programmable Input Ranges
±10, ±5, 0 to 10 V
Throughput rate: 1 MSPS
Simultaneous conversion with read in less than 1μs
Specified for VCC of 5 V±5%
Low current consumption: 5.65 mA max
Wide input bandwidth
70 dB SNR at 50 kHz input frequency
On-chip reference: 2.5 V
–40°C to +85°C operation
High speed serial interface
SPI®/QSPI™/MICROWIRE™/DSP compatible
iCMOS^TM Process Technology
24-lead TSSOP package
For 14 bit version see AD7367
GENERAL DESCRIPTION
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.
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 V range, ±5 V range
and 0 to 10 V range.
The AD7366 has an on-chip 2.5 V reference that can be
overdriven if an external reference is preferred. The AD7366 is
available in a 24-lead TSSOP package.
iCMOS^TM 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.
True Bipolar Input, Dual
1μs, 12-Bit, 2-Channel SAR ADC
AD7366
FUNCTIONAL BLOCK DIAGRAM
V_DD
D_CAPA
AV_CC
DV_CC
REF
BUF
AD7366
V_A1
MUX
12-BIT
T/H
SUCCESSIVE
APPROXIMATION
OUTPUT
DRIVERS
ADC
V_A2
CONTROL
LOGIC
V_B1
12-BIT
MUX
T/H
SUCCESSIVE
APPROXIMATION
OUTPUT
DRIVERS
V_B2
ADC
BUF
D_OUTA
SCLK
CONVST
CS
BUSY
ADDR
RANGE0
RANGE1
REFSEL
V_DRIVE
D_OUTB
AGND AGND
V_SS D_CAPB
Figure 1
DGND
Table 1.Related Products
Device
Number
Resolution
Throughput
Rate
Number of
Channels
AD7367
14-Bit
1 MSPS
Dual, 2-ch
AD7366-5 12-Bit
500 KSPS
Dual, 2-ch
AD7367-5 14-Bit
500 KSPS
Dual, 2-ch
1_{Protected by U.S. Patent No. 6,681,332.}
Rev. PrG
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