[AK9223]
AK9223
Dual 1-Bit, 10MHz, 2nd-Order, ΔΣ Modulator
General Description The AK9223 is a 2ch delta-sigma modulato...
[AK9223]
AK9223
Dual 1-Bit, 10MHz, 2nd-Order, ΔΣ Modulator
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 105C Small Package: 24-pin TSSOP (0.65mm pitch)
CH2+ CH2REF2
AIN0+ AIN0REFI0
AIN1+ AIN1REFI1
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
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2019/02
■ Pin Configurations
AVDD
1
VSS1
2
REFI0
3
TEST0
4
AIN0+
5
AIN0-
6
AIN1-
7
AIN1+
8
TEST1
9
REFI1
10
VSS2
11
AVDD
12
Top View
[AK9223]
24
AVDD
23
REFO
22
VSS4
21
OUT0
20
OUT1
19
CLKO
18
VSS5
17
DVDD
16
CLKI
15
SEL
14
VSS3
13
AVDD
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2019/02
[AK9223]
Pin Functions
Pin No. Pin Name I/O
Function
1
AVDD
-
Analog Power Supply: 4.5V to 5.5V Connect to VSS1~VSS4 with a 0.1μF ceramic capacitor.
2
VSS1
- Ground
3
REFI0
I Reference Vol...