True Bipolar Input, Dual

1μs, 12-Bit, 2-Channel SAR ADC

Preliminary Technical Data

AD7366

Rev. PrG

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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

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

24-lead TSSOP package

For 14 bit version see AD7367

GENERAL DESCRIPTION

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.

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.

FUNCTIONAL BLOCK DIAGRAM

OUTPUT

DRIVERS

T/H

OUTPUT

DRIVERS

CONTROL

LOGIC

12-BIT

SUCCESSIVE

APPROXIMATION

ADC

12-BIT

SUCCESSIVE

APPROXIMATION

ADC

T/H

MUX

MUX

REF

BUF

BUF

AD7366

CONVST

CS

ADDR

RANGE0

RANGE1

BUSY

SCLK

REFSEL

AGND

AGND

DGND

Figure 1

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