www.tij.co.jp Application Report JAJA127 Σ
Σ 2
3
Σ 4
5
Σ Σ 2 2 1 1 Data Out 1 2 3 4 Data 1 2 3 4 Out Data Out 1 2 3 4 6
A CS B CLK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 DOUT D 11 D 10 D 9 D 8 D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0 7
± ± A IN+ A IN ADC DAC ±200mV 8
π + f s + f s /2 V CM Input IN V CM f s /2 f s ADC + f s /2 IN V CM f s /2 V CM IN IN ADC 9
FS 1000 5.000 4.6875 1001 1010 1011 4.6875 4.0625 3.4375 4.375 3.750 3.125 4.0625 3.4375 2.1825 1/2 FS 1100 2.1825 2.500 2.1875 1101 1110 2.1875 1.5625 1.875 1.250 1.5625 0.9375 BPZ 1V LSB 1111 0.9375 0.625 0.3125 BPZ 0000 0.3125 0.000 +0.3125 BPZ + 1V LSB 0001 +0.3125 +0.625 +0.9375 0010 0011 +0.9375 +1.5625 +1.250 +1.875 +1.5625 +2.1875 1/2 +FS 0100 +2.1875 +2.500 +2.8125 0101 0110 +2.8125 +3.4375 +3.125 +3.750 +3.4375 +4.0625 +FS 0111 +4.0625 +4.375 ± 10
FS 0000 5.000 4.6875 0001 0010 0011 4.6875 4.0625 3.4375 4.375 3.750 3.125 4.0625 3.4375 2.1825 1/2 FS 0100 2.1825 2.500 2.1875 0101 0110 2.1875 1.5625 1.875 1.250 1.5625 0.9375 BPZ 1V LSB 0111 0.9375 0.625 0.3125 BPZ 1000 0.3125 0.000 +0.3125 BPZ + 1V LSB 1001 +0.3125 +0.625 +0.9375 1010 1011 +0.9375 +1.5625 +1.250 +1.875 +1.5625 +2.1875 1/2 +FS 1100 +2.1875 +2.500 +2.8125 1101 1110 +2.8125 +3.4375 +3.125 +3.750 +3.4375 +4.0625 +FS 1111 +4.0625 +4.375 ± 11
π δδ 111 110 101 100 011 010 001 000 0 1/4 FS 1/2 FS 3/4 FS FS 12
FS 1111 5.000 4.6875 1110 1101 1100 4.6875 4.0625 3.4375 4.375 3.750 3.125 4.0625 3.4375 2.1825 1/2 FS 1011 2.1825 2.500 2.1875 1010 1001 2.1875 1.5625 1.875 1.250 1.5625 0.9375 BPZ 1V LSB 1000 0.9375 0.625 0.3125 BPZ 0111 0.3125 0.000 +0.3125 BPZ + 1V LSB 0110 +0.3125 +0.625 +0.9375 0101 0100 +0.9375 +1.5625 +1.250 +1.875 +1.5625 +2.1875 1/2 +FS 0011 +2.1875 +2.500 +2.8125 0010 0001 +2.8125 +3.4375 +3.125 +3.750 +3.4375 +4.0625 +FS 0000 +4.0625 +4.375 ± 13
Zero +1V LSB 1/4 FSR 1/2 FSR 3/4 FSR +FS 1111 1110 1101 1100 1011 1010 1001 1000 0111 0110 0101 0100 0011 0010 0001 0000 0.3125 0.9375 1.5625 2.1875 2.8125 3.4375 4.0625 4.6875 5.3125 5.9375 6.5625 7.1875 7.8125 8.4375 9.0625 0.000 0.625 1.250 1.875 2.500 3.125 3.750 4.375 5.000 5.625 6.250 6.875 7.500 8.125 8.750 9.375 0.3125 0.9375 1.5625 2.1875 2.8125 3.4375 4.0625 4.6875 5.3125 5.9375 6.5625 7.1875 7.8125 8.4375 9.0625 14
FS 0111 5.000 4.6875 0110 0101 0100 4.6875 4.0625 3.4375 4.375 3.750 3.125 4.0625 3.4375 2.1825 1/2 FS 0011 2.1825 2.500 2.1875 0010 0001 2.1875 1.5625 1.875 1.250 1.5625 0.9375 BPZ 1V LSB 0000 0.9375 0.625 0.3125 BPZ 1111 0.3125 0.000 +0.3125 BPZ + 1V LSB 1110 +0.3125 +0.625 +0.9375 1101 1100 +0.9375 +1.5625 +1.250 +1.875 +1.5625 +2.1875 1/2 +FS 1011 +2.1875 +2.500 +2.8125 1010 1001 +2.8125 +3.4375 +3.125 +3.750 +3.4375 +4.0625 +FS 1000 +4.0625 +4.375 ± 15
ε f CUT-OFF A PASS f STOP A MAX A STOP 16
V IN V REF V REF + + V IN+ 17
18 JAJA127
0 20 40 60 80 100 120 140 8192 point FFT, F IN = 10.0022kHz, 0.2dB B A F D G C E 160 0 10 20 30 40 50 19
2.6 2.38 1% 3.3 2.72 3.9 2.94 0.01% 4.4 3.13 0.001% 4.9 3.29 0.0001% 20
δφ/δωφω ωπ 111 110 101 100 011 010 001 000 21
111 110 101 100 011 010 001 000 INL < 0 INL < 0 22
23
24
25 JAJA127 000 001 010 011 100 101 110 111 FS 1/2 FS 3/4 FS 1/4 FS 0
26 JAJA127 000 001 010 011 100 101 110 111 FS 1/2 FS 0
111 110 101 100 011 010 001 000 0 1/4 FS 1/2 FS 3/4 FS FS 27
ε ε f CUT-OFF A PASS f STOP A MAX A STOP 28
29 JAJA127 i n V IN V IN n-i i
30 JAJA127 µ ± ±
31 JAJA127 Ω CDAC
q 32
θ 33
Amplitude (db) 0 20 40 60 80 100 120 140 8192 point FFT, F IN = 10.0022kHz, 0.2dB B A F D G C E 160 0 10 20 30 40 50 34
Zero 0000 0.000 0.3125 +1V LSB 0001 0010 0011 0.3125 0.9375 1.5625 0.625 1.250 1.875 0.9375 1.5625 2.1875 1/4 FSR 0100 2.1875 2.500 2.8125 0101 0110 0111 2.8125 3.4375 4.0625 3.125 3.750 4.375 3.4375 4.0625 4.6875 1/2 FSR 1000 4.6875 5.000 5.3125 3/4 FSR 1001 1010 1011 1100 5.3125 5.9375 6.5625 7.1875 5.625 6.250 6.875 7.500 5.9375 6.5625 7.1875 7.8125 1101 1110 7.8125 8.4375 8.125 8.750 8.4375 9.0625 +FS 1111 9.0625 9.375 35
(SBAA147A) 36
IMPORTANT NOTICE 2001.11