®
PCM
170
4
49%
FPO
PCM1704
24-Bit, 96kHz
BiCMOS Sign-Magnitude
DIGITAL-TO-ANALOG CONVERTER
TM
FEATURES
q
SAMPLING FREQUENCY (f
S
): 16kHz to 96kHz
q
8X OVERSAMPLING AT 96kHz
q
INPUT AUDIO DATA WORD: 20-, 24-Bit
q
HIGH PERFORMANCE:
Dynamic Range: K Grade = 112dB typ
SNR: 120dB typ
THD+N: K Grade = 0.0008% typ
q
FAST CURRENT OUTPUT:
±
1.2mA/200ns
q
GLITCH-FREE OUTPUT
q
PIN-PROGRAMMABLE DATA INVERSION
q
POWER SUPPLY:
±
5V
q
SMALL 20-LEAD SO PACKAGE
DESCRIPTION
The PCM1704 is a precision, 24-bit digital-to-analog
converter with exceptionally high dynamic perfor-
mance. The ultra-low distortion and excellent low-
level signal performance makes the PCM1704 an ideal
candidate for high-end consumer and professional
audio applications. When used with a digital interpo-
lation filter, the PCM1704 supports 8X oversampling
at 96kHz.
The PCM1704 incorporates a BiCMOS sign-magni-
tude architecture that eliminates glitches and other
nonlinearities around bipolar zero. The PCM1704 is
precision laser-trimmed at the factory to minimize
differential linearity and gain errors.
In addition to high performance audio systems, the
PCM1704 is well-suited to waveform synthesis appli-
cations requiring very low distortion and noise.
BCLK
WCLK
DATA
20-BIT
INVERT
Serial Input
and
Control Logic
23-Bit DAC A
23-Bit DAC B
I
OUT
Bipolar Offset
Reference and Servo
Power Supply
REF DC SERVO DC
–V
DD
DGND +V
DD
–V
CC
AGND +V
CC
BPO DC
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1998 Burr-Brown Corporation
PDS-1454C
Printed in U.S.A. February, 1999
SPECIFICATIONS
All specifications at T
A
= +25°C,
±V
CC
=
±V
DD
=
±5V,
f
S
= 768kHz (96kHz • 8), and 24-bit data, unless otherwise noted.
PCM1704U
PARAMETER
RESOLUTION
DATA FORMAT
Audio Data Interface Format
Audio Data Code
Sampling Frequency (f
S
)
Input Clock Frequency
DIGITAL INPUT/OUTPUT
Input Logic Level:
V
IH(1)
V
IL(1)
V
IH(2)
V
IL(2)
Input Logic Current:
I
IH(1)
I
IL(1)
I
IH(2)
I
IL(2)
DYNAMIC PERFORMANCE(3)
THD+N
V
O
= 0dB
CONDITIONS
MIN
TYP
24
20-, 24-Bit, MSB-First
Binary Two’s Complement
16
96
25
kHz
MHz
MAX
UNITS
Bits
+2.0
0
–3.0
–5.0
V
IH
= +V
DD
V
IL
= 0V
V
IH
= 0V
V
IL
= –V
DD
PCM1704U
PCM1704U-J
PCM1704U-K
PCM1704U
PCM1704U-J
PCM1704U-K
EIAJ, A-weighted
PCM1704U, U-J
PCM1704U-K
EIAJ, A-weighted
f = 1002Hz at –90dB
0.0025
0.0015
0.0008
0.008
0.007
0.006
102
106
112
110
112
120
±0.5
±1.0
±0.5
±25
±5
±1.2
1.0
200
+4.75
–4.75
+V
CC
= +V
DD
= +5.0V
–V
CC
= –V
DD
= –5.0V
–25
–55
+5.0
–5.0
5
30
+5.0
+0.8
0
–4.2
±10
±10
±10
–100
0.0030
0.0025
0.0015
0.020
0.015
0.01
V
V
V
V
µA
µA
µA
µA
%
%
%
%
%
%
dB
dB
dB
dB
V
O
=–20dB
Dynamic Range
Signal-to-Noise Ratio
Low Level Linearity
DC ACCURACY
Gain Error
Bipolar Zero Error
Gain Drift
Bipolar Zero Error Drift
ANALOG OUTPUT
Output Range
Output Impedance
Settling Time
POWER SUPPLY REQUIREMENTS
Voltage Range: +V
CC
= +V
DD
–V
CC
= –V
DD
Combined Supply Current:+I
CC
–I
CC
TEMPERATURE RANGE
Operation
Storage
±3.0
±1.0
0°C to 70°C
0°C to 70°C
% of FSR
% of FSR
ppm of FSR/°C
ppm of FSR/°C
mA
kΩ
ns
±0.0003%
of FSR,
±1.2mA
Step
+5.25
–5.25
8
45
+85
+125
VDC
VDC
mA
mA
°C
°C
NOTES: (1) BCLK, WCLK, DATA. (2) 20BIT, INVERT. (3) Dynamic performance data is tested with 5534 I/V amp with 7.5kΩ feedback resistor. THD+N data is
tested by Shibasoku 725C with 30kHz external LPF, 400Hz HPF, average mode. Input signal frequency = 1.1kHz.
®
PCM1704
2
PIN CONFIGURATION
TOP VIEW
SOIC
PIN ASSIGNMENTS
PIN
1
2
NAME
DATA
BCLK
NC
–V
DD
DGND
+V
DD
WCLK
NC
20BIT
INVERT
+V
CC
BPO DC
NC
I
OUT
AGND
AGND
SERVO DC
NC
REF DC
–V
CC
I/O
IN
IN
—
—
—
—
IN
—
IN
IN
—
—
—
OUT
—
—
—
—
—
—
FUNCTION
Serial Audio Data Input.
Bit Clock Input for Serial Audio Data.
No Connection.
Digital Power, –5V.
Digital Ground.
Digital Power, +5V.
Data Latch Enable Input.
No Connection.
Input Data Word Selection
(1)
.
Input Data Polarity Selection
(1)
.
Analog Power, +5V.
Bipolar Offset Decoupling Capacitor.
No Connection.
Current Output for Audio Signal.
Analog Ground.
Analog Ground.
Servo Amplifier Decoupling Capacitor.
No Connection.
Band Gap Reference Decoupling Capacitor.
Analog Power, –5V.
DATA
BCLK
NC
–V
DD
DGND
+V
DD
WCLK
NC
20BIT
1
2
3
4
5
6
7
8
9
PCM1704U
20
19
18
17
16
15
14
13
12
11
–V
CC
REF DC
NC
SERVO DC
AGND
AGND
I
OUT
NC
BPO DC
+V
CC
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
INVERT 10
PACKAGE INFORMATION
TEMPERATURE
RANGE
–25°C to +85°C
PACKAGE
DRAWING
NUMBER
(1)
248
18
19
20
PRODUCT
PCM1704U
PACKAGE
20-Lead SOIC
NOTE: (1) Internal pull-up resistors. Input level must be a voltage from –V
DD
to DGND.
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, +V
DD
,+V
CC
............................................................. +6.5V
Supply Voltage Differences ..............................................................
±0.1V
GND Voltage Differences .................................................................
±0.1V
Digital Input Voltage
(BCLK, WCLK, DATA) ............................ DGND –0.3V to (+V
DD
+ 0.3V)
(20BIT, INVERT) .................................... –V
DD
– 0.3V to (DGND + 0.3V)
Input Current (any pins except supply pins) ...................................
±10mA
Power Dissipation .......................................................................... 300mW
Operating Temperature Range ......................................... –25°C to +85°C
Storage Temperature ...................................................... –55°C to +125°C
Lead Temperature (soldering, 5s) ................................................. +260°C
Package Temperature (reflow, 10s) .............................................. +235°C
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
®
3
PCM1704
SPECIFICATIONS
All specifications at +25°C,
±V
CC
and
±V
DD
=
±5.0V,
unless otherwise noted.
THD+N vs LEVEL
100
10
1
16-Bit Data
0.1
0.10
0.001
0.0001
–100 –90
24-Bit Data
–60
–80
–100
–120
–80
–70
–60
–50
–40
–30
–20
–10
0
Output Level (dBFS)
0
–20
–90dB SIGNAL SPECTRUM
–80
–90
–100
Amplitude (dB)
THD+N (dB)
THD+N (%)
–40
–110
–120
–130
–140
–150
20.0 2.02k 4.02k 6.01k 8.01k 10.0k 12.0k 14.0k 16.0k 18.0k 20.0k
Output Frequency (Hz)
DAC OUTPUT
–110dB, 24-Bit, 96kHz
DAC OUTPUT
–110dB, 20-Bit, 96kHz
DAC OUTPUT
–120dB, 24-Bit, 96kHz
DAC OUTPUT
–120dB, 20-Bit, 96kHz
®
PCM1704
4
SPECIFICATIONS (
CONT
)
All specifications at +25°C,
±V
CC
and
±V
DD
=
±5.0V,
unless otherwise noted.
POWER SUPPLY REJECTION RATIO vs FREQUENCY
–60
Power Supply Rejection Ratio (dB)
–70
–80
–V
CC
–90
–100
–110
–120
10
20
50
100
200
500
1k
Frequency (Hz)
+V
CC
®
5
PCM1704
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