Datasheet

3
LTC1564
1564fa
PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Impedance Gain = 1, DC V
IN
= 0V 10 kΩ
Gain = 16, DC V
IN
= 0V 625 Ω
Output Impedance f
C
= 10kHz, f = 10kHz 30 Ω
Mute State (F = 0000) Gain F = 0000, f
IN
= 20kHz, V
IN
= 1V
RMS
–103 dB
Mute State Output Noise F = 0000, BW = 200kHz 5.4 µV
RMS
Shutdown Supply Current V
S
= ±1.35V, EN to V
+
45 75 µA
V
S
= ±1.35V, EN to V
+
● 150 µA
V
S
= ±2.375V, EN to V
+
100 150 µA
V
S
= ±2.375V, EN to V
+
● 180 µA
V
S
= ±5V, EN to V
+
(Note 4) 175 µA
Digital Input “High” Voltage V
S
= ±1.35V 1.08 V
V
S
= ±2.375V 1.90 V
V
S
= ±5V 4.50 V
Digital Input “Low” Voltage V
S
= ±1.35V –1.08 V
V
S
= ±2.375V –1.90 V
V
S
= ±5V 0.50 V
Digital Input Pull-Up or Pull-Down Current (Note 5) V
S
= ±1.35V ● 3.5 6 µA
(Digital Inputs Other than EN) V
S
= ±5V ● 13 20 µA
Digital Input Pull-Up Current (EN Input) V
S
= ±1.35V ● 12 µA
V
S
= ±5V ● 10 20 µA
The ● denotes specifications that apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. V
S
= ±2.375V, f
C
= 10kHz, gain = 1, R
L
= 10k, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: Response is tested in production at discrete frequencies f
IN
of 0.1,
0.5, 0.8 and 0.9 times f
C
.
Note 3: Relative to gain at 0.1f
C
.
Note 4: All digital inputs driven rail-to-rail. When driving digital inputs with
0V and 5V levels, the shutdown current will increase to 3.5mA (typ).
Note 5: Each digital input includes a small positive or negative current
source to float the CMOS input to V
+
or V
–
potential if it is unconnected.
The table shows the current due to this source when the input is driven at
the supply voltage opposite from the float potential. Pins CS/HOLD, F3, F2,
F0 and G3 to G0 float to the V
–
voltage, pins RST, EN and F1 to the V
+
voltage. See “Floatable Digital Inputs” in Applications Information section.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Overall Frequency Response
(Frequency Scales Normalized to f
C
)
f
IN
/f
C
–130
–70
–90
–110
10
0
–10
–30
–50
–80
–100
–120
–20
–40
–60
1564 G01
GAIN (dB)
0.1
10
1
f
C
= 10kHz
f
C
= 150kHz
f
C
= 50kHz
V
S
= SINGLE 5V
UNITY GAIN
(G CODE 0000)
FREQUENCY (kHz)
5
–10
GAIN (dB)
–5
0
5
6.25 7.5 8.75 10
1564 G02
11.25
12.5
–40°C, 25°C, 85°C
f
C
= 10kHz
SINGLE 5V SUPPLY
FREQUENCY (kHz)
50
–10
GAIN (dB)
–5
0
85°C
5
62.5 75 87.5 100
1564 G03
112.5
125
f
C
= 100kHz
SINGLE 5V SUPPLY
–40°C
25°C
Roll-Offs Over Temperature
(f
C
= 10kHz)
Roll-Offs Over Temperature
(f
C
= 100kHz)