AD1938YSTZ Analog Devices Inc, AD1938YSTZ Datasheet - Page 3

• Manufacturer Part Number: AD1938YSTZ
• Description: IC CODEC 24BIT 4ADC/8DAC 48LQFP
• Manufacturer: Analog Devices Inc
• Type: General Purposer

Specifications of AD1938YSTZ

• Data Interface: Serial
• Resolution (bits): 24 b
• Number Of Adcs / Dacs: 4 / 8
• Sigma Delta: Yes
• S/n Ratio, Adcs / Dacs (db) Typ: 94 / 94
• Dynamic Range, Adcs / Dacs (db) Typ: 105 / 106
• Voltage - Supply, Analog: 3 V ~ 3.6 V
• Voltage - Supply, Digital: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Audio Codec Type: Audio
• No. Of Adcs: 4
• No. Of Dacs: 8
• No. Of Input Channels: 4
• No. Of Output Channels: 8
• Adc / Dac Resolution: 24bit
• Adcs / Dacs Signal To Noise Ratio: 108dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SPECIFICATIONS
TEST CONDITIONS
Performance of all channels is identical, exclusive of the interchannel gain mismatch and interchannel phase deviation specifications.
Supply voltages (AVDD, DVDD)
Temperature range
Master clock
Input sample rate
Measurement bandwidth
Word width
Load capacitance (digital output)
Load current (digital output)
Input voltage high
Input voltage low
1
ANALOG PERFORMANCE SPECIFICATIONS
Specifications guaranteed at an ambient temperature of 25°C.
Table 1.
Parameter
ANALOG-TO-DIGITAL CONVERTERS
DIGITAL-TO-ANALOG CONVERTERS
Functionally guaranteed at −40°C to +125°C case temperature.
Full-Scale Input Voltage (Differential)
ADC Resolution
Dynamic Range
Total Harmonic Distortion + Noise
Gain Error
Interchannel Gain Mismatch
Offset Error
Gain Drift
Interchannel Isolation
CMRR
Input Resistance
Input Capacitance
Input Common-Mode Bias Voltage
Dynamic Range
Total Harmonic Distortion + Noise
Full-Scale Output Voltage
Gain Error
Interchannel Gain Mismatch
Offset Error
Gain Drift
No Filter (RMS)
With A-Weighted Filter (RMS)
No Filter (RMS)
With A-Weighted Filter (RMS)
With A-Weighted Filter (Average)
Single-Ended Version
Single-Ended Version
1
3.3 V
as specified in Table 1 and Table 2
12.288 MHz (48 kHz f
48 kHz
20 Hz to 20 kHz
24 bits
20 pF
±1 mA or 1.5 kΩ to ½ DVDD supply
2.0 V
0.8 V
Conditions
All ADCs
20 Hz to 20 kHz, −60 dB input
−1 dBFS
100 mV rms, 1 kHz
100 mV rms, 20 kHz
20 Hz to 20 kHz, −60 dB input
0 dBFS
Two channels running
Eight channels running
S
, 256 × f
Rev. C | Page 3 of 32
S
mode)
Min
98
100
−10
−0.25
−10
98
100
−10
−0.2
−25
−30
Typ
24
102
105
−96
1.9
0
100
−110
55
55
14
10
1.5
104
106
108
−92
−86
0.88 (2.48)
−4
Max
−87
+10
+0.25
+10
−75
+10
+0.2
+25
+30
Unit
Bits
dB
dB
dB
V rms
%
dB
mV
ppm/°C
dB
dB
dB
kΩ
pF
V
dB
dB
dB
dB
dB
V rms (V p-p)
%
dB
mV
ppm/°C
AD1938