LTC1564 Datasheet, PDF (3/12 Pages) Linear Technology – 10kHz to 150kHz Digitally Controlled Antialiasing Filter and 4-Bit P.G.A

LTC1564
ELECTRICAL CHARACTERISTICS The q 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.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Mute State Output Noise
Shutdown Supply Current
Digital Input “High” Voltage
Digital Input “Low” Voltage
Digital Input Pull-Up or Pull-Down Current (Note 5)
(Digital Inputs Other than EN)
Digital Input Pull-Up Current (EN Input)
F = 0000, BW = 200kHz
V_S = ±1.35V, EN to V⁺
V_S = ±1.35V, EN to V⁺
V_S = ±2.375V, EN to V⁺
V_S = ±2.375V, EN to V⁺
V_S = ±5V, EN to V⁺ (Note 4)
V_S = ±1.35V
V_S = ±2.375V
V_S = ±5V
V_S = ±1.35V
V_S = ±2.375V
V_S = ±5V
V_S = ±1.35V
V_S = ±5V
V_S = ±1.35V
V_S = ±5V
q
q
1.08
1.90
4.50
q
q
q
q
5.4
µV_RMS
45
75
µA
150
µA
100 150
µA
180
µA
175
µA
V
V
V
–1.08
V
–1.90
V
0.50
V
3.5
6
µA
13
20
µA
1
2
µA
10
20
µA
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
Overall Frequency Response
(Frequency Scales Normalized to f_C)
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0.1
V_S = SINGLE 5V
UNITY GAIN
(G CODE 0000)
f_C = 50kHz
f_C = 150kHz
f_C = 10kHz
1
10
f_IN/f_C
1564 G01
Roll-Offs Over Temperature
(f_C = 10kHz)
5
f_C = 10kHz
SINGLE 5V SUPPLY
–40°C, 25°C, 85°C
0
–5
–10
5
6.25 7.5 8.75 10 11.25 12.5
FREQUENCY (kHz)
1564 G02
Roll-Offs Over Temperature
(f_C = 100kHz)
5
f_C = 100kHz
SINGLE 5V SUPPLY
0
–40°C 85°C
25°C
–5
–10
50 62.5 75 87.5 100 112.5 125
FREQUENCY (kHz)
1564 G03
3