[AK9223]

014010283-E-01

1

2015/01

General Description

The AK9223 is a 2ch delta-sigma modulator that achieves 86dB dynamic range. It operates of a 5V power

supply. The AK9223 is available in a space-saving 24-pin TSSOP package.

Features

 Resolution: 16-bit

 Linearity: 13-bit

 Input Voltage Range: ±2.3V

 High Accurate Reference Voltage: ±1% (2.5V ±0.025V), ±20ppm/

C (typ.)

 Gain Error: 0.5% (max.)



2ch ΔΣ Modulator

 2ch Input Reference

 20MHz OSC

 Selectable External Clocks

 Power Consumption: 67.5 mW (SEL=1, AVDD = DVDD = 5V)

 Power Supply: AVDD = 4.5 to 5.5V、DVDD = 2.7 to 5.5V

 Ta = -40 to 105

C

 Small Package: 24-pin TSSOP (0.65mm pitch)

Figure 1. Block Diagram

AK9223

Dual 1-Bit, 10MHz, 2nd-

Order, ΔΣ Modulat

or

Second-Order

ΔΣModulator

2.5V

Reference

Voltage

AVDD

DVDD

20MHz

OSC

Oscillator

Output

Interface

Circuit

Clock

Select

AIN0+

AIN0-

REFI0

CH2+

REF2

REFO

OUT1

OUT2

CLKI

SEL

VSS1 VSS2

CH2-

AIN1+

AIN1-

REFI1

Second-Order

ΔΣModulator

CLKO

VSS3 VSS4 VSS5