Datasheet

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SBOS312B − JULY 2004 − REVISED DECEMBER 2004
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3
ELECTRICAL CHARACTERISTICS
At T
A
= +25°C, V
A
+ = +15V, V
A
− = −15V, V
D
+ = +5V, R
L
= 100kΩ, C
L
= 20pF, BW measure = 20Hz to 20kHz, unless otherwise noted.
PGA2320
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DC CHARACTERISTICS
Step Size 0.5 dB
Gain Error Gain Setting = 31.5dB ±0.1 dB
Gain Matching ±0.1 dB
Input Resistance 12 kΩ
Input Capacitance 18 pF
AC CHARACTERISTICS
THD+N V
IN
= 10V
PP
, f = 1kHz 0.0003 0.001 %
Dynamic Range V
IN
= AGND, Gain = 0dB 115 120 dB
Voltage Range, Input and Output (V
A
−) + 0.86 (V
A
+) − 0.86 V
Output Noise V
IN
= AGND, Gain = 0dB 10.5 17.5 µV
RMS
Interchannel Crosstalk f = 1kHz −126 dBFS
OUTPUT BUFFER
Offset Voltage V
IN
= AGND, Gain = 0dB 1 7.5 mV
Load Capacitance Stability 1000 pF
Short-Circuit Current 75 mA
Unity-Gain Bandwidth, Small Signal 1 MHz
DIGITAL CHARACTERISTICS
High-Level Input Voltage, V
IH
+2.0 V
D
+ V
Low-Level Input Voltage, V
IL
−0.3 0.8 V
High-Level Output Voltage, V
OH
I
O
= 200µA (V
D
+) − 1.0 V
Low-Level Output Voltage, V
OL
I
O
= −2mA 0.4 V
Input Leakage Current 1 10 µA
SWITCHING CHARACTERISTICS
Serial Clock (SCLK) Frequency t
SCLK
0 6.25 MHz
Serial Clock (SCLK) Pulse Width Low t
PH
80 ns
Serial Clock (SCLK) Pulse Width
High
t
PL
80 ns
MUTE Pulse Width Low t
MI
2.0 ms
Input Timing
SDI Setup Time t
SDS
20 ns
SDI Hold Time t
SDH
20 ns
CS Falling to SCLK Rising t
CSCR
90 ns
SCLK Falling to CS Rising t
CFCS
35 ns
Output Timing
CS Low to SDO Active t
CSO
35 ns
SCLK Falling to SDO Data Valid t
CFDO
60 ns
POWER SUPPLY
Operating Voltage
V
A
+ +4.5 +15 +15.5 V
V
A
− −4.5 −15 −15.5 V
V
D
+ +4.5 +5 +5.5 V
Quiescent Current
I
A
+ V
A
+ = +15V 11 16 mA
I
A
− V
A
− = −15V 11 16 mA
I
D
+ V
D
+ = +5V 0.6 1.5 mA