AD7400AYRWZ-RL Analog Devices Inc, AD7400AYRWZ-RL Datasheet - Page 16

• Manufacturer Part Number: AD7400AYRWZ-RL
• Description: Isolated Sigma-Delta Modulator ADC I.C.
• Manufacturer: Analog Devices Inc
• Type: Modulatorr

Specifications of AD7400AYRWZ-RL

• Resolution (bits): 14 b
• Data Interface: Serial
• Voltage Supply Source: Single Supply
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sampling Rate (per Second): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD7400A
/*DIFFERENTIATOR (including decimation
stage)
Perform the differentiation stage (FIR) at a
lower speed.
Z = one sample delay
WORD_CLK = output word rate
*/
always @ (posedge word_clk or posedge reset)
if(reset)
else
WORD_CLK
ACC3
begin
acc3_d2 <= 0;
diff1_d <= 0;
diff2_d <= 0;
diff1 <= 0;
diff2 <= 0;
diff3 <= 0;
end
begin
diff1 <= acc3 - acc3_d2;
diff2 <= diff1 - diff1_d;
diff3 <= diff2 - diff2_d;
acc3_d2 <= acc3;
diff1_d <= diff1;
Z
–1
Figure 27. Differentiator
+
–
DIFF1
Z
–1
+
–
–
DIFF2
Z
–1
–
+
DIFF3
Rev. B | Page 16 of 20
/* Clock the Sinc output into an output
register
WORD_CLK = output word rate
*/
always @ (posedge word_clk)
begin
DATA[15] <= diff3[23];
DATA[14] <= diff3[22];
DATA[13] <= diff3[21];
DATA[12] <= diff3[20];
DATA[11] <= diff3[19];
DATA[10] <= diff3[18];
DATA[9]
DATA[8]
DATA[7]
DATA[6]
DATA[5]
DATA[4]
DATA[3]
DATA[2]
DATA[1]
DATA[0]
end
endmodule
diff2_d <= diff2;
end
Figure 28. Clocking Sinc Output into an Output Register
<= diff3[17];
<= diff3[16];
<= diff3[15];
<= diff3[14];
<= diff3[13];
<= diff3[12];
<= diff3[11];
<= diff3[10];
<= diff3[9];
<= diff3[8];
WORD_CLK
DIFF3
DATA