AK9223 Datasheet, PDF (1/16 Pages) Asahi Kasei Microsystems – Dual 1-Bit, 10MHz, 2nd-Order, Modulat

[AK9223]
AK9223
Dual 1-Bit, 10MHz, 2nd-Order, ΔΣ Modulat
or
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)
CH2+
CH2-
REF2
AIN0+
AIN0-
REFI0
AIN1+
AIN1-
REFI1
REFO
AVDD
Second-Order
ΔΣModulator
DVDD
Output
Interface
Circuit
OUT1
OUT2
CLKO
Second-Order
ΔΣModulator
Clock
Select
20MHz
OSC
Oscillator
2.5V
Reference
Voltage
VSS1 VSS2 VSS3 VSS4 VSS5
Figure 1. Block Diagram
CLKI
SEL
014010283-E-01
1
2015/01